6sl7 Vs 12ax7
NEW Shuguang Chinese 6N9P 6SL7 6H9C Vacuum Tube 2PCS - Direct Replacement of 6SL7 FREE SHIPPING WORLDWIDE DESCRIPTIONThe Shuguang Chinese 6N9P is direct replacement of 6SL7. Vacuum tubes. The 7F7 is identical to the 6SL7. Â Sound stage is expansive and inclusive. Best Bass Gear is a dedicated bass guitar only website for the bass enthusiast. The ECC83S (12AX7) from JJ is a very low noise. Once upon a time there was only the 12AX7. As a result the El34's in the Laney example get a big final push from the pre-amp stages. Good post, Edmond. We need a mention the fourth member of the Sovtek 12AX7 family. Just because I happen to have one handy here's a picture of a 6SN7 in the Mighty-Mite. When I listen to recorded music, I sit in the sweet spot and stare at the empty space between the speakers. Hundreds of users reported Sophia Electric 6SL7 tubes are better than the vintage 6SL7 tubes being replaced, even the best from vintage time. Here is the page: I had an octal pre wired in parallel to the 12AX7 V1 of. The "premium" qualities of the 5692 include a long-life cathode rated at 10,000 hours along with extra support rods and mica spacers to eliminate microphonics. The -3 dB HF roll-off is higher for the 12AX7 due to its lower input capacitance. Is there any inherent benefit of either packaging ?. I wanted to get more focused and open sound and this has been a nice upgrade from the standard 12ax7. Show Details. Very smooth and warm sound. COMBINATED DOUBLE TRIODE ECC832 is 12DW7 pre-amplifying double triode. Tube Complement: 6SK7 rf, 6K8 mix, 6J5 hfo, 6K7 if1, 6SK7 if2, 6SL7 det/NL, 6V6 avc, 6SJ7 bfo, 6SN7 phase inv, (2) 6V6 af out, 5Y3 rect. The 6SL7(GT) and the 6SC7(GT) are both twin triode tube with at 70Mu like a 5751, but the 6SC7 has a single cathode for both triode sections and the 6SL7 has two indipendent cathodes like a 12AX7 or 5751 etc. And the 6SN7 should sub for the 12AU7 if I am correct. 12AX7 Williamson First stage alone. ” The GE Black plate 12AX7 (and 5751) have an enchanting and beautiful sound. Custom EI power transformers. We're dedicated to helping you get the absolute best tone and performance out of your bass guitar. The 6SL7 seems to have more space, openness than the 12AX7, BUT one thing I learned early on is that if you are going to put the 6SL7 in hi-gain applications be sure to use DC on the filaments, otherwise they will hummmm like crazy because the filament cannot be paralleled, unlike the 12A*7 Novals. Bias is an alternating current of high frequency which is applied to the tape recorder to reduce distortion. NOS 6SL7 5691 NOS 5842 NOS 6SJ7 5693. " VT-229 RCA - Black Base, Black Round Plates, graphite coating - If your system sounds a little too analytical, harsh or electronic this may be your favorite tube. This will allow you to get the most power out of the amplifier. [In Spanish. 2-Ch Avr, 4K, HDR10, Dolby Vision/Atmos/Virtual; FOR SALE: Pro-Linear Speaker L-Pad Assy, (mid, high) 8 ohm. Philips are what are mostly seen, if rarely. 12AX7 Comparison; 6L6 Comparison Chart; Amp Technicians; Applying Tolex; Customer Amp Builds; Audio Tubes / Valves; Preamp Tubes; 6SL7 Tubes; 6SL7 Tubes 3 Products Found Sort. Highly recommended. Perfect for Marshalls, Voxes and clones of these amps. 13 ruger9 5 years ago. Designed after the Telefunken 803S. In the following notes a number of typical circuits in which both 6N1P and 6N2P can be employed as amplifier and fase inverter are described. The valve sees two of these, or 64k). JJ Electronic - Vacuum tubes, Capacitors, Amplifiers. This the first Princeton to use the 12AX7 rather than the 6SL7 or 6SC7 of previous models. Ubiquitous use in such equipment makes it one of the few small-signal valves in continuous production since it was introduced, in 1946. An example is the common 9-pin miniature base (as 12AX7, 12AU7, etc. It combines 12AX7 and 12AU7, where the 12AX7 is used as 1st stage and the 12AU7 as 2nd stage. The 7F7 is identical to the 6SL7. Re: 12AX7 vs 6SL7 Det största problemet med 6SL7 som jag upplevt, är att det är svårt att hitta rör som inte är mikrofoniska. Has extra thick mica wafers to eliminate microphonics. The "premium" qualities of the 5692 include a long-life cathode rated at 10,000 hours along with extra support rods and mica spacers to eliminate microphonics. 6L6, 6550, 5881, EL34, KT88these are all 6. Many vacuum tube phono preamplifiers are designed using the 12AX7 and the 6SL7. The TESLA (NOT JJ) E83CC frame grid tubes are the BEST you can buy, when you do not want to spend. Excellent choice for clean bass and guitar tone or mic. Most likely not the best 12AX7 for guitar high gain. Swiss made ELMA selector switches with gold-plated contacts. Ebb adjusted to achieve desired Eb. The basic long-tailed-pair without negative feedback is shown in the schematic. Now we have: µ = 100 R A = 80K ohm. Circuit highlights include the use of a total of eight pieces Hovland MusiCaps®. similar to 5751 gain. 12bh7/ecc99 The 12BH7 is a medium gain dual triode used in hi-fi amplifiers, pro audio equipment and some guitar amplifier circuits. 雖然有人認為 6sl7 / 6sn7 的聲音,足以勝過當紅的 12ax7 / 12au7, 而且大腳、有底座的管子比較堅固耐用,較大的管身亮起來也比較美麗, 但除了 diy,目前單純使用 6sl7 / 6sn7 設計的前級並不多。 為什麼 ?! 1. A number on the schematic diagram replaces ? in refdes. If given the choice of using any octal NOS tube, I would pick 6SN7 over 6SL7. 6AV6,6SQ7, and 12AX7 triodes. But typical operating conditions or plate curves 12AT7 don't look that similar to 6AQ6. With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube. This new production Tungsol 6SL7 tube is manufactured at their Xpo-Pul factory (also known as Reflektor) in Saratov, Russia. Tube Testing Equipment. The power supply utilizing three selected vacuum tubes (1 x 5Y3, 1 x 6V6 and 1 x 6SL7) incorporated with a newly design circuit. Although they've been going up in the last couple of years. Has extra thick mica wafers to eliminate microphonics. All 12AT7 - ECC81 valves come AMPLITREX AT1000 or MAXIMATCHER tested. The 7F7 is identical to the 6SL7. They were very inexpensive. My siding with the 6SN7 tube over the 12Au7 is actually based on the air and ambiance, and complete lack of noise I have received from good octal tube preamps. The JJ 5751 is a drop-in replacement for any 12AX7 / ECC83 tube. Perfect for Marshalls, Voxes and clones of these amps. Some common octal tubes are 6V6GT, 6L6GC, EL34, 6550, KT88, 6SL7, and 5AR4. Contact Us. Share | Previous | Next. ANOS RCA 12AX7A/7025. How to use 6N1P and 6N2P Russian tube. As far as new production goes, I think the JJ 6SL7 is actually fantastic. We have some more vintage Fender amplifier schematics today. Shuguang 6N8P (6SN7). Enjoy our 45-day return policy. La 12AX7 fue desarrollada para reemplazar al doble triodo de base octal 6SL7 para ser usada en amplificadores de audio. Generally speaking, and assuming the tube has been assembled properly, microphony in subminiature tubes is lower than in miniature types and centred around higher resonant frequencies because the. They was thought as 9 pin replacements for octal 6H8C (6SN7 GT) and 6H9C (6SL7 GT) respectively. If Ebb = 400 volts then the grid voltage of the inverter and the plate voltage of the amplifier should be about 100 volts. Can someone speak to similarities and differences between 6N2P-EV and 12ax7, given that: Both are wired for their correct pin out @6. The octal preamp tubes I am familar with were used in tweed Fenders and many other vintage tube amps. Hurricanes-While I I might add that the 12AX7 input valves are absolutely critical in the TVA-1 circuit. The cascode is a means of using a pair of triodes to achieve very high levels of gain and input sensitivity from a single stage. Add to Cart. This new production Tungsol 6SL7 tube is manufactured at their Xpo-Pul factory (also known as Reflektor) in Saratov, Russia. With the 12AX7 being such a popular tube in vintage as well as current preamplifiers, a great 12AX7 is always in demand. If you want to use all octal then I have been told and the shematic link above agrees that a 6SL7's higher mu will be needed. Tube Data Sheet Locator. These are rough estimates as each tube will have its own electrical characteristics and just swapping one (new) 12AX7 for another (new) 12AX7 could result in slight higher or lower gain from the circuit. Â Articulation is excellent, though not as detailed as the TungSol. Customers who bought this item also bought. Cryogenic Treating. The JJ's broke up too soon and gave a softer (squishier) overdrive while the MB's hold the tone better and give a crisper overdrive when pushed. ★★送料無料★★ 親切な真空管ヘルプデスク 無料相談 0120·194·380 プレミアムクラス 最高グレード 極上の真空管サウンドを求める方にお薦め·全数検査、210日間保証、72時間エージング 商品について ·新品 現行真空管 完動品。. An extreme case of this behavior is the way certain 12AX7 tubes operate in preamp circuits. Right now in fact I'm listening through my power amp with a 6DJ8 frontend (a Tesla late '70's production PCC88 actually), and the amp sounds superb, really lush and wonderful with excellent depth and stage, but sub in an Electro Harmonix 6922, and the amp turns very ordinary. This tube has a very clear and warm sound that was built to last. Buy your JJ Tubes 12AX7/ECC83 Preamp Tube from Sam Ash and receive the guaranteed lowest price. Thousands of Audio, Radio and HAM vacuum tubes. 8) Hi Eric; An alternate approach would be to dedicate each 6SL7 to a single function in the SRPP and float it's heater appropriately using a second 6. dual triode is also similar (like the 6SL7 but a common cathode). These old octals are streets ahead of noval valves , I just don't understand all the fuss surrounding these 'exotic' ECC83 variants. The 6SN7 has a modern nine pin equivalent,. With the 12AX7 being such a popular tube in vintage as well as current preamplifiers, a great 12AX7 is always in demand. 12AX7 (also known as ECC83) is a vacuum tube that is a miniature dual triode - 6AV6 with high voltage gain. INTRODUCTION. It gives more gain but the reason is distortion is 10x less with 2 x 12AU7 vs 1 pc of 12AX7. FWIW: The 6SL7 which has the exact same pinout as the 6SN7 has about the same gain as a 5751. Tremolo doesn't work Replace the fifth tube from the right (forth on a Princeton, second on a Vibro-Champ, third on a non reverb amp) looking from the back (12AX7). The attributes of the 12AX7 that link it to its subcircuit in TUBE. Perfect for Marshalls, Voxes and clones of these amps. TWIN TRIODE, 12AX7 datasheet, 12AX7 circuit, 12AX7 data sheet : GEC, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors. Good post, Edmond. Bias Calculator. I have also messed around with similar high mu valves , in my case I compared 7F7 (loctal 6SL7) to 6GK5 , ECC83 and 5755. Can I solicit some opinions from anyone who has tried any octal preamp tubes? The 6SL7 is listed in the RCA tube manual as high Mu, so that's what I was going on. The right amount of clean gain for bass IMHO. Perfect for Marshalls, Voxes and clones of these amps. Tung-Sol 12AX7 New Production Preamp Vacuum Tube. While there are many different types of preamp tubes, the most common type is the classic 12AX7. Dual mono (left and right channel seperated) line stages featuring (2) 12AU7 and (2) 12AX7 vacuum tubes. 12AT7 = ECC81 = CV4024 = M8162 = 6201 = 6060 = B309 = CV455 = 6679: 12AU7 = ECC82 = CV4003 = M8136. They post job opportunities and usually lead with titles like “Freelance Designer for GoPro” “Freelance Graphic Designer for ESPN”. Swap your tubes out for these for tone transformation. Buy your JJ Tubes 12AX7/ECC83 Preamp Tube from Sam Ash and receive the guaranteed lowest price. This tube has a very clear and warm sound that was built to last. As the title says, I am looking for some advice here. I think that they sound better. anything but guitar amps. Again the power section is flawed in these amps and uses a similar configuration as the octal models. The open sound with detailed, but not edgy midrange is to die for. I will build a 6SL7 or 12AX7 SRPP voltage amp to drive a UX-245 triode base on the above calculation on my single end stereo platform. Cathode Bypass Capacitor Calculator Basic Theory - using 21st-Century technology to design vacuum tube preamps, power amps, and power supplies System Design - a professional methodology for crafting a complete guitar amplifier. But typical operating conditions or plate curves 12AT7 don't look that similar to 6AQ6. They are also great for Hi-Fi stereo amplifiers. Thanks Gordon, yes, I trying to find an octal dual-triode or single triode in octal base with the transconductance of a 12AT7, That is the problem and the reason that the chassis was drilled to use Octal and not want to lose, again thanks, Martin. Show Details. Also included in this comparison are direct substitutes for the 12AX7 including ECC83, ECC803, 7025 and 5751. Our thoughts go out to all who are affected by COVID-19. 12AT7 - ECC81 Another popular twin triode. If you can't find any, check for the 12V heater cousin. Since TubeDepot is in Memphis, TN, the home and main hub for FedEx and USPS, we get very good rates, so rest assured your heavy item will be shipped at the most affordable rates. The TAD 7025-S worked perfectly! The TAD is VERY quiet, cleaned up the low end bloom and added warmth and more balance /presence to the highs. Honestly I would add a 6av6/6at6 and maybe use the 6SL7 or 6SN7 in a cascode setup and the single triode as the driver. Then because the microphonics were high they changed to a short plate that is 1/2" and this helped to quiet them down some. 8) Hi Eric; An alternate approach would be to dedicate each 6SL7 to a single function in the SRPP and float it's heater appropriately using a second 6. It retains all of the definition and detail that the ECC83S short plate and the ECC803S long plate tubes have but it has. Â Articulation is excellent, though not as detailed as the TungSol. Custom EI power transformers. (with a 6sn7 pinout in the amp to a 12ax7 pinout tube. ANOS Mullard 12AX7's, made in Great Britain. The specs of the 6SN7 are closer to the 12AU7, not 12AX7. If you listen to your system fairly frequently, I suggest spending the extra 10 dollars, as tubes will usually fail around 1000 hours if they do not exhibit immediate defects. Saturday 9:00 am - 5:00 pm Pacific. Radio tubes are valves. This tube provides a fat and smooth tone, overall more musical than the newer 12AX7 (kinda like the difference between a 6V6 and an EL84, to give some perspective). Ecc82 vs ecc83 Over the past few weeks I’ve noticed this company “Kalo” popping up on LinkedIn. I will build a 6SL7 or 12AX7 SRPP voltage amp to drive a UX-245 triode base on the above calculation on my single end stereo platform. Free shipping is limited to the contiguous 48 states. response and very open. Ebb adjusted to achieve desired Eb. 112a_vs_6g6g 17jt6a 3a_109b6098 6aw8 6de4 6hj5 6sl7 832a el83_6ck6 uv200 11hm7 17kw6 3c33 60fx5 6az8 6dj8 6hs5 6sn7 845eyy13 uv型3極管 11ly6 17z3 3dg4 6159a 6b-r22 6dq5 6hz6 6t10 8532 gm-70 uy-14m 12718a5 3ea5 6173 6b4g_etc 6ds5 6hz8 6t48532w gy-50 uz-30mc 12a5 1a34033a 6197 6b56dz4 6j56u88608 hf120 vr150. It has a spiral heater. Guitar amplifier parts, guitar amplifier tubes and guitar amp tubes 12ax7, 6v6gt, EL84. ampeg r-15r 6sl7, 6sn7,7025,6sl7,2x 7591 ampeg sb-12 2x 12ax7, 6l6gc,5ar4 ampeg svt preamp 12ax7,3x 12dw7, 6c4 ampeg svt 12dw7,2x 12bh7,6 x 6146 or 8298 ampeg svt 12dw7, 2x 12bh7, 6 x 6550 ampeg v2 2x 12ax7, 6k11,6cg7,12ax7,12dw7,12au7,2x 7027a ampeg v3 2x12ax7, 7199, 2x 7027a, 5ar4 ampeg vt-22,v-4 3x 12ax7, 6k11,6cg7,12dw7,12au7, 4x 7027a. Patrick Dowd's writeup*. Stay well, stay safe. Browse products from the Vacuum Tubes category NOS specs call the 5751 a “special 12AX7” having a high-mu amplification factor of 70. Tavish Design's Vintage 6SL7 Phono Stage is a passively-equalized, two-gain-stage design using the 6SL7GT octal dual triode, a vacuum tube first introduced (by RCA) in 1941. Can I solicit some opinions from anyone who has tried any octal preamp tubes? The 6SL7 is listed in the RCA tube manual as high Mu, so that's what I was going on. Flying Leads Plug&Play CV4034 - Premium 12AU7 ECC82 E82CC ECC802S 5814 6189 6680 CV491 CV4003 CV4113 CV4122 F6067 B749 M8136 13D5 7316 type. Sound nice in Fenders and Fender clones too. Features 4 sets of line level inputs; 2 sets of stereo outputs. This tube has a very clear and warm sound that was built to last. I have built the same radio you are talking about from the 1943 ARRL handbook. Again the power section is flawed in these amps and uses a similar configuration as the octal models. Those old guys knew a thing or two about amplifiers. The 6SN7 was used as an audio amplifier in the 1940-1955 period, usually in the driver stages of power amps. The 12AX7, 12AT7, and 12AU7 all belong to the same family of nine contact, twin triode tubes. supposedly, the 5692's are the best iteration of the 6sn7 tubes. A good example of the remote-cutoff pentode is the type 39/44, which uses a 5-pin base and a grid cap, so it is interesting to experiment with. Any 12AX7 or 7025 is usable here–it need not be low-noise or low-hum, nor does it need to be tested for microphony. 64) Posted by Morse on 2003-03-12, 17:53:50 (63. Show Details. I built the patrick turner tube preamp. Brand New Mullard Reissue 12AX7 Vacuum Tube. The Mullard 12AX7 is a versatile tube for many amplifiers like the Fender Deluxe line and more. A little better gain and on average a little better performing tube. A joule thief has many applications, the best gadget that I made with was a "Water Powered Lamp", soon I'm going to post on a guide about it but first I need to post this guide. Arrangements for P Tapestry right now here from Ebay. Designed after the Telefunken 803S. The 6SL7 is an octal twin triode with amplification factor (mu) of about 70. Germany in 1968. The ECC83S (12AX7) from JJ is a very low noise. Diode Rectification. However, there is way to minimise microphonic pickup in miniature B9A tubes, such as the 12AX7—mount the tube in a N. It retains all of the definition and detail that the ECC83S short plate and the ECC803S long plate tubes have but it has. Stay well, stay safe. ru: 6N9S*: html page 6SL7: MK buizen handboek: Frank Philipse (Pocnet mirror - Patrik Schindler). This is not entirely true. Telefunken & others such as Raytheon 12ax7 black plate are not even close in performance compared to the RCA 12AX7 black plate. One of the members had suggested building a Super Simple Single Stage Preamp ("4S" Preamp for short) and there was much discussion concerning various tubes, gain, noise, etc. High gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound. Es muy popular entre los entusiastas de los amplificadores a válvulas, y su uso prolongado durante años la convierte en una de las pocas válvulas de baja señal en producción continua desde que se comercializó por primera. NEW SHUGUANG CHINESE 6N9P 6SL7 6H9C Vacuum Tube 2PCS - $19. The design is almost the same as the 12AX7 preamp, it is a single gain stage triode tube with cathode follower. FLUXION BL-2A tube preamplifier with MM phono EQ, 3 INPUT 2 OUTPUT, 6SN7 6SL7 12AX7 Photo. SRPP vs cathode follower, right pre out tubes for you 12AU7 6SN7, no good 12AX7 6SL7 12AT7 진공관앰프. This is the driver. power supply also on clc supply. Show Details. Two PSvane 300B power tubes, one 6SN7 and one 6SL7 small signal tubes, and one 5AR4 rectifier. 9 pounds usually ship FedEx Ground or USPS Priority Mail. 12AU7 is double triode small size novel tube, it is used as inverter drive push-pull amplifier in amplifying circuit. Get a low price and free shipping on thousands of items. This will allow you to get the most power out of the amplifier. select the first character of the tube. Share | Previous | Next. The right amount of clean gain for bass IMHO. Guitar amplifier parts, guitar amplifier tubes and guitar amp tubes 12ax7, 6v6gt, EL84. They are good quality and found in many Chinese amps and preamps. If you want to get an idea of the gain level of the 6SL7, try a 12AY7 or 12AT7 in there but again, I don't know if anything was done to your circuit to tame the 12AX7 (if anything) either way, it won't hurt the amp to try a lower gain, nine. MULLARD ADZAM ECC35 - 6SL7 - CV569 - VT-229 THE JEWEL IN THE CROWN!! - SUPERB DOUBLE TRIODE AUDIOPHILE COLLECTOR PIECE!! - MATCHED PAIR For the experts panel of EulosOne, the BEST ECC35 all over the W. The 6SL7 is an octal twin triode with amplification factor (mu) of about 70. Gold Lion ECC83 / B759 / 12AX7. The tube configuration was a little different as well. The design is almost the same as the 12AX7 preamp, it is a single gain stage triode tube with cathode follower. sounds good on reg. It's a bigger fatter sound but will not drive the power tube like a higher gain 12ax7 will. When you want the very best sounding audio tubes, shop at Tube World Express. tube specs: 12at7 / ecc81: 12au7 / ecc82: 12ax7 / ecc83: 12ax7 / ecc803s gold: 5881: 6550: 6l6g: 6l6gc str: 6sl7gt: 6sn7gtb: 6v6gt: 7581: el34b: kt66: kt120: kt150. I will build a 6SL7 or 12AX7 SRPP voltage amp to drive a UX-245 triode base on the above calculation on my single end stereo platform. response and very open. Real Telefunken PCC88 are drop in replacements for ECC88/6DJ8/E88CC with a slightly higher heater specification of 7 volts producing a much longer life and lower noise threshold when used in place of ECC88/6DJ8. They was thought as 9 pin replacements for octal 6H8C (6SN7 GT) and 6H9C (6SL7 GT) respectively. Em 1957 a Philips lançou sua versão da 12AX7 no mercado europeu com o código ECC83. The oversize power transformer is custom wound and double chokes are also used. All 12AT7 - ECC81 valves come AMPLITREX AT1000 or MAXIMATCHER tested. with an adapter with no problem in my socket modified Dyna Pass II. Cộng đồng sưu tập đồ cổ, đồ sưu tầm, đồng hồ, audio. Fender went back to a grid leak biased first gain stage giving the amp a gritty sound. 3V in the same circuit and the power transformer has adequate current for either. The main change from the 5E1 circuit in 1956 was the removal of the filter choke. MULLARD 12AU7 - ECC82 - 6189 MATCHED PAIR NOS TUBES. Various tube markings including United, Pinnacle, RWN, Tesla, Siemens, Dumont, Amperex,Telefunken, etc. 6L6, 6550, 5881, EL34, KT88these are all 6. Out of curiousity I built an octal to noval converter, and plugged in an ECC83 where the 6SL7 input tube normally goes, as they are very roughly equivalent tubes. 174) I have the Sophia 6sn7's and no longer use them in my amp. I think that they sound better. The lovely hard rock tone magically appears! Sovtek 12AX7LPS. 6SL7, like all dual triode tube, has two sections. They are good quality and found in many Chinese amps and preamps. Hallicrafters S-38A Type: General Coverage Modes: AM/CW. Shipping Totals (GA-5 Les Paul Junior model in italics). They post job opportunities and usually lead with titles like “Freelance Designer for GoPro” “Freelance Graphic Designer for ESPN”. It is also much easier building a truly linear amp with 6SN7 than with the little 9-pin jobs. We've mastered this tube over a long period of time and even though this tube required more attention and work, we. Rectifier : Manufacturer: Brand: Type: Qty: Amperex BB: EZ80: GT: 2: Cossor: 45IU: ST: 2: Ediswan: EZ80: GT: 1: Emitron (GEC) 6x4: GT: 12: GEC: EZ81: GT: 1: Klangfilm. If Ebb = 400 volts then the grid voltage of the inverter and the plate voltage of the amplifier should be about 100 volts. Flying Leads Plug&Play CV4035 - Premium 12AX7 ECC83 ECC803S E83CC 7025 CV4004 CV492 M8137 M8214 6057 type. For half a century, they were regarded crap. 1: Re: How to determine the Heater-groud level in SRPP topology (9. Free shipping is limited to the contiguous 48 states. The tube line stage utilizing four 12AX7 vacuum tubes. As a result the El34’s in the Laney example get a big final push from the pre-amp stages. The design is almost the same as the 12AX7 preamp, it is a single gain stage triode tube with cathode follower. Bias Calculator. Brand new, MINT NOS Late 1960s RFT ECC83 12AX7 VEB Röhrenwerke Anna Seghers Neuhaus Prod Tubes with Halo Getter. They post job opportunities and usually lead with titles like “Freelance Designer for GoPro” “Freelance Graphic Designer for ESPN”. The 5963 has a max plate voltage of 250V while 12AU7 has a max of 330V. 6AV6,6SQ7, and 12AX7 triodes. Any 12AX7 or 7025 is usable here–it need not be low-noise or low-hum, nor does it need to be tested for microphony. 6SL7 GT TUBES IN ORIGINAL BOX NOS US RCA Matched pairs. This is a very linear tube which sounds. You have given me something to ponder and I am probably a little closer to trying it. We specialize in New (NOS) & used USA Vintage vacuum tubes. The main change from the 5E1 circuit in 1956 was the removal of the filter choke. 8) Hi Eric; An alternate approach would be to dedicate each 6SL7 to a single function in the SRPP and float it's heater appropriately using a second 6. 6SL7 Tube Types in Stock TC Tubes and Audio Repair Repair services include tube and solid state gear, turn table set-up, and tube-testing in Twin Cities Metro Area. It was developed around 1946 by RCA engineers in Camden, New Jersey, under developmental number A-4522. The power supply utilizing three selected vacuum tubes (1 x 5Y3, 1 x 6V6 and 1 x 6SL7) incorporated with a newly design circuit. An all-tube Carvin V3, equipped with five 12AX7 preamp and four EL34 power tubes. The power tube is a cathode biased class A 6V6GT. My Favorite Tubes and Their Substitutes by Robert H. It's a thermionic valve/electron tube with *two* triodes in the one envelope. However the 12AX7 has a mu (amplification factor) of 100, while the 6SL7 has a mu of 70. GE used/tested 7025 $25. It is also much easier building a truly linear amp with 6SN7 than with the little 9-pin jobs. A while back I wrote about some tube rolling I was doing, and that I found that the Brimar CV1985 was one of the best 6SL7 types I've heard, and also the amazing RCA/GE 5691 Red base: GE branded version: I use two of those bad boys in the line stage of my Croft preamp, and they are fantastic, however, I'd like to introduce you to another. 12AX7 Comparisons; EH 7025 Review; JJ E83CC Vs. So what are the right values?. For those 6sl7/6sn7 users,don't be afraid to swap 6sl7/ 6sn7 or vise versa,or even 6sl7 on one channel and 12ax7/ 6dj8 12au7 on the other channel. The main reason is the 12at7 dont look good ,it dont fit in with se 807. The 6SL7 is an octal twin triode with amplification factor (mu) of about 70. We carry the highest quality pickups, preamps, and bass guitar parts including hard to find items from top brand names like Bartolini, Aguilar, and Nordstrand. As the title says, I am looking for some advice here. Bandmaster 5C7, 5D7 tweed 0001 to 0800 - 1953 5000 to 5500 - 1954 Bandmaster 5E7 tweed S00001 to S00350 - 1955 S00350 to S01200 - 1956 …. Our thoughts go out to all who are affected by COVID-19. Thousands of Audio, Radio and HAM vacuum tubes. sounds good on reg. Tube bias of an amp is used to find the optimum setting for the flow of current in the tube when the amp is idling. I select a 12AX7 the databook said that µ = 100 and Ra= 80K ohm I made R = RAK = RK = 3. The classic information, on early RCA tubes in particular, is Bro. ? by hilldweller » Sun Nov 24, 2013 7:24 pm Yea, I thought a bigger tube with bigger plate surface would be a better choice and that is what I will probably use. It has the same pinout as the 12AX7 but is not electrically compatible and is taller. The nine-pin 12AX7 has a amplification factor of 100. Each preamp is running into one side of a QSC and then into identical cabs (JGR custom 15/8's). As a result the El34’s in the Laney example get a big final push from the pre-amp stages. Ribbed or smooth plate, these are used pulls, but test as new. If you are looking for a high mu tube and want to use something else as the 6SL7 tube or if you look for an Octal based alternative to a 12AX7, the 6SC7 might be the choice for you. After finished my simple 12AX7 tube preamp, I decided to try other medium mu tubes, including the 12AU7 and also this 6922. I think a 6SL7 be a good sub for the 12AX7 with the same 300 ma heater current. Right now the Rebel can get some gnarly grind out of it when it's cranked. While it is believed to be accurate, this list may unintentionally contain incorrect information. Ubiquitous use in such equipment makes it one of the few small-signal valves in continuous production since it was introduced, in 1946. 3VAC supply. If you want to get an idea of the gain level of the 6SL7, try a 12AY7 or 12AT7 in there but again, I don't know if anything was done to your circuit to tame the 12AX7 (if anything) either way, it won't hurt the amp to try a lower gain, nine pin tube. They are also great for Hi-Fi stereo amplifiers. Found 200 records in Search of Tube DIY Asylum. A/B comparison of my MKII 12ax7 preamp design and the 6SL7 design. Though 6SL7 is similar to ECC83, which NOS version is very expensive, and 6SL7 is even older. The 12AX7 has no equivalent octal. Well, seems 'WE replica' has been a theme for tube manufacturers from China. All 12AT7 - ECC81 valves come AMPLITREX AT1000 or MAXIMATCHER tested. Highly recommended. (I believe 6N2P requires 40ma or so of additional current over a 12ax7) Some have said 6N2P-EV to be more closely related to a 6SL7. The Tung-Sol EL84/6BQ5 is a popular EL84/6BQ5 tube for guitar amplifiers, such as those built by Gibson and Harmony. Again the power section is flawed in these amps and uses a similar configuration as the octal models. The open sound with detailed, but not edgy midrange is to die for. The 12AX7 vacuum tube was developed by RCA to replace a tube called the 6SL7. 7C7 - loctal 6SJ7 (or really close to it!) 7F7 - loctal 6SL7. The valve sees two of these, or 64k). ru: 6N9S*: html page 6SL7: MK buizen handboek: Frank Philipse (Pocnet mirror - Patrik Schindler). ★★送料無料★★ 親切な真空管ヘルプデスク 無料相談 0120·194·380 プレミアムクラス 最高グレード 極上の真空管サウンドを求める方にお薦め·全数検査、210日間保証、72時間エージング 商品について ·新品 現行真空管 完動品。. The reissue Tung-Sol 12AX7 has the highest gain of all of the 12AX7 types. But I think the same would prob occur with a good 12AX7 vs a lousy one. The 6SL7 is an octal twin triode with amplification factor (mu) of about 70. 6SL7GT can replace VT-229 5691 6N9P 6H9C. Radio tubes are valves. 12bh7/ecc99 The 12BH7 is a medium gain dual triode used in hi-fi amplifiers, pro audio equipment and some guitar amplifier circuits. Although both are dual triode tubes, the latter is a power triode type and the circuitry required will have very different requirements than 6SN7/6SL7 tubes. Shuguang 845B (845) Vacuum Tube. Same result , in fact I recently used a 7F7 to drive a small 12B4a SET amp. The design is almost the same as the 12AX7 preamp, it is a single gain stage triode tube with cathode follower. Circuit highlights include the use of a total of eight pieces Hovland MusiCaps®. An extreme case of this behavior is the way certain 12AX7 tubes operate in preamp circuits. Just because I happen to have one handy here's a picture of a 6SN7 in the Mighty-Mite. The specs of the 6SN7 are closer to the 12AU7, not 12AX7. Victoria, Australia. 137: RE: TJ / Sophia 6SN7 & 6SL7 (8. I wanted to get more focused and open sound and this has been a nice upgrade from the standard 12ax7. Big, warm, and musical. New production & NOS pre amp compatible tubes from Tung-Sol, Sovtek & other various brands! Mullard 12AX7 / ECC83 New Production Preamp Vacuum Tube. It combines 12AX7 and 12AU7, where the 12AX7 is used as 1st stage and the 12AU7 as 2nd stage. We will take a look at why you might, or might not want to swap out the different types of tubes. Given below is the tube amp bias calculator to find the bias in ampere or milliampere (mA or A). Get the guaranteed best price on Preamp Tubes like the Groove Tubes Stubti-Tube 1 6SL7 to 12AX7 Octal to 9-Pin Adapter at Musician's Friend. 12AT7 - ECC81 Another popular twin triode. Brand new, MINT NOS Late 1960s RFT ECC83 12AX7 VEB Röhrenwerke Anna Seghers Neuhaus Prod Tubes with Halo Getter. Cathode Bypass Capacitor Calculator Basic Theory - using 21st-Century technology to design vacuum tube preamps, power amps, and power supplies System Design - a professional methodology for crafting a complete guitar amplifier. Vo = 10 v RMS. The 12AX7 spec octal equivalent is the 6SL7, and the 6SL7 tube definitely will not work. slide 4: phone: 02-9798-9233 fax: 02-9798-0017 electronic components phone: 02-9798-9233 fax: 02-9798-0017 web: www. The main reason is the 12at7 dont look good ,it dont fit in with se 807. Our top pick for old Ampeg amps. About the only practical application would be for the LTP, and there are already loads of dual triodes for that: 12AX7, 6SL7, 6SC7, etc. 6SL7 Power Tubes 2, 25L6. with an adapter with no problem in my socket modified Dyna Pass II. The 5963 has a slightly lower plate voltage rating compared to regular 12AU7. As a popular choice for guitar tube amplifiers, its ongoing use in such equipment makes it one of the few small-signal vacuum tubes in continuous production since it was introduced. TWIN TRIODE, 12AX7 datasheet, 12AX7 circuit, 12AX7 data sheet : GEC, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors. 6SL7/ECC35 7025 EL156 810 KT77 102D 12AT7/ECC81 12AU7/ECC82 12AX7/ECC83 12BH7 211 274B/5U4G/5Z3P 2A3 300B 350C 50CA10 572B 5881 6550 6L6 6SN7/CV181 6V6 805/805A 807/FU-7 811A/FU-811 812 845 EL34/6CA7 EL84 KT66. Bias is an alternating current of high frequency which is applied to the tape recorder to reduce distortion. Features 4 sets of line level inputs; 2 sets of stereo outputs. These are invaluable reference tools if you are digging around inside of your vintage Fender amplifier. I have built the same radio you are talking about from the 1943 ARRL handbook. This new production Tungsol 6SL7 tube is manufactured at their Xpo-Pul factory (also known as Reflektor) in Saratov, Russia. Variants include: 7062, E180CC, E81CC, CV6091, 12AT7WA, 6060, 6679, 7492, A2900. Browse products from the Vacuum Tubes category NOS specs call the 5751 a “special 12AX7” having a high-mu amplification factor of 70. Tube Complement: 6SK7 rf, 6K8 mix, 6J5 hfo, 6K7 if1, 6SK7 if2, 6SL7 det/NL, 6V6 avc, 6SJ7 bfo, 6SN7 phase inv, (2) 6V6 af out, 5Y3 rect. and several designs were presented using various dual triode tubes. 12AX7 Basics The 12AX7 is a 9-pin miniature, high-mu, twin triode. 12AT7 = ECC81 = CV4024 = M8162 = 6201 = 6060 = B309 = CV455 = 6679: 12AU7 = ECC82 = CV4003 = M8136. 00, all inclusive. Features 4 sets of line level inputs; 2 sets of stereo outputs. 12at7,12bz7 & 6dj8/ecc88 etc. The 12AX7 will have a bit more gain (34 vs. I have built the same radio you are talking about from the 1943 ARRL handbook. These are in the top 2-3 desirable tubes for Guitar tone, and also work fine in Audio gear. Single Ended Class A 6V6 6J5 Valve (Vacuum Tube) Amplifier Circuit. All of our vacuum tubes. 7B5 - loctal 6K6. And 6 volts is correct. ANOS RCA 12AX7A/7025. While many lovers of vacuum tubes enjoy the hunt for NOS (new old stock) tubes, great deals on NOS tubes are few and far inbetween. As of 2019, 6SN7s and 6SL7s are still manufactured in Russia and are widely available. Once upon a time there was only the 12AX7. The ECC83S (12AX7) from JJ is a very low noise. 5 The Epiphone serial number decoder currently supports 12 serial number formats from 25 factories. Each is tested and guaranteed. Square Getter. Well, seems 'WE replica' has been a theme for tube manufacturers from China. The open sound with detailed, but not edgy midrange is to die for. Quick Picks (By Product): Tung-Sol 12AX7 , Mullard 12AX7, Electro-Harmonix 12AX7, Ruby EL34BHT, JJ 6L6GC, Tung-Sol 6V6GT, JJ EL84, RUBY 6L6GCMS, Mullard EL34, Ruby 12AX7AC7 HG+, Electro-Harmonix 6V6GT. Domestic US shipments over 8 pounds will be subject to shipping fees. Low output. High gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound. JJ-Electronic Valve ecc83s Is great for blues/rock players, good fat base. Slightly taller than the Ruby & Tubestore 12AX7. LIB are: template=X^@REFDES %P %G %C @MODEL refdes=TU? PART=12AX7 MODEL=12AX7. Thurs 25th June. For those 6sl7/6sn7 users,don't be afraid to swap 6sl7/ 6sn7 or vise versa,or even 6sl7 on one channel and 12ax7/ 6dj8 12au7 on the other channel. The 7C6 triode is also similar. However, a complicating factor in all this, too, is in a B-15, new 6SL7's sound not as ballsy and a little on the meh side compared to old ones, and I only use NOS in my B-15N for that reason, and I'm sure that's why the Heritage B-15 came with NOS 6SL7's. Given below is the tube amp bias calculator to find the bias in ampere or milliampere (mA or A). The "premium" qualities of the 5692 include a long-life cathode rated at 10,000 hours along with extra support rods and mica spacers to eliminate microphonics. GE used/tested ANOS 12AX7 & 12AX7A ( 1960s Gray Plates ) $ 20. The power supply utilizing three selected vacuum tubes (1 x 5Y3, 1 x 6V6 and 1 x 6SL7) incorporated with a newly design circuit. These days what has caught my eye is either an authentic EAR 834p (probably used), and a Tavish Design model. Linearity is good but as with other high mu vacuum tubes, large voltage swings aren't possible. Just a preamp and I have it running into Fender PA with 2 5881 and a 12AX7 like a brownface 6G6B. It's high gain makes it popular in guitar amps, though it's also widely used in HiFi amps, especially in phono stages. A/B comparison of my MKII 12ax7 preamp design and the 6SL7 design. COMBINATED DOUBLE TRIODE ECC832 is 12DW7 pre-amplifying double triode. Bias is an alternating current of high frequency which is applied to the tape recorder to reduce distortion. It is also much easier building a truly linear amp with 6SN7 than with the little 9-pin jobs. I am sure there are other more obscure octals than can be subbed. Generally speaking, and assuming the tube has been assembled properly, microphony in subminiature tubes is lower than in miniature types and centred around higher resonant frequencies because the. The 12AX7 has no equivalent octal. Many musicians look to refine their sound so that it provides the highest level of audio quality, and one way that’s becoming increasingly common is to use a vintage tube amp, which is also referred to as a valve amp. We will take a look at why you might, or might not want to swap out the different types of tubes. Highly recommended. We believe that this is the most complete, highest resolutio. Just because I happen to have one handy here's a picture of a 6SN7 in the Mighty-Mite. These are rough estimates as each tube will have its own electrical characteristics and just swapping one (new) 12AX7 for another (new) 12AX7 could result in slight higher or lower gain from the circuit. This is the DX version of the TU-8200. 12V they don't sound as intended because you are out of the optimal operating. 2:37 DOWNLOAD PLAY. The Flagship. ( 12AX7 2-Stage Passive Eq Preamp. The 12ax7 is a a more aggressive sometimes harsh tube that though ubiquitous, isn't a favorite of mine. A few years ago, I got the idea that it might be fun to build a phono preamp which uses tubes. Below is a list of the tubes used in various Collins, Drake and Heathkit amateur radio equipment, their recommended substitutions, and the general function of the tube in the rigs, if known. similar to 5751 gain. Tube Testing Equipment. The 12AX7, due to having a center tap on their heaters, can run in either a 6. ) shown below: 7-pin miniatures work the same, except of course that the last pin will be pin 7. Since TubeDepot is in Memphis, TN, the home and main hub for FedEx and USPS, we get very good rates, so rest assured your heavy item will be shipped at the most affordable rates. Why should this surprise you? When designing for normal, line level (1. Cryo 12AX7 / ECC83 Cryo 12AY7 Cryo 12BH7 / 6350 Cryo 12DW7 / ECC832 Cryo 5751 Cryo 6922 / 6DJ8 / E88CC / 6N1P Cryo 6C45PI Cryo 6CG7 / 6FQ7 Cryo 6H6P / ECC99 / E182CC Cryo 6N23P-EV Cryo 6N30P Cryo 6SL7GT / 5691 Cryo 6SN7 / 5692 / 6H8C Cryo EF86 Super Cryo Preamp Tubes Cryo Power Tubes-> Cryo Rectifier Tubes-> NOS 12AT7 NOS 12AU7 NOS 12AX7 NOS 12BH7. Guitar Amp Vacuum Tubes Don't let worn, failing, or compromised vacuum tubes (valves) rob your amplifier of its precious tone! Available individually or in matched sets, AMS provides a full range of preamp and power amp tubes to deliver the ultimate in amplifier performance. The 7C6 triode is also similar. I love the rich tone of the octal tubes like the 6SL7 over that of the 9-pin tubes as the 12AX7. My siding with the 6SN7 tube over the 12Au7 is actually based on the air and ambiance, and complete lack of noise I have received from good octal tube preamps. Today, it is by far the most common preamp tube used for electric guitar amplification and there is an almost overwhelming supply of current production options to choose from. The Power tube could be a 5B2, 5C2, 5D2, a 6V6 or a 6V6GT. These are in the top 2-3 desirable tubes for Guitar tone, and also work fine in Audio gear. Tung-Sol 6V6GTs are the holy grail for players who crave the sound of a Fender Princeton, Deluxe or Champ, or those who revere the tone of the earliest Ampeg Jet and Rocket. 1st Place Tie: Mazda 6189 Silver Plates 3-Mica and 50’s Valvo Long Plate Angled Getter. It's a bigger fatter sound but will not drive the power tube like a higher gain 12ax7 will. It's high gain makes it popular in guitar amps, though it's also widely used in HiFi amps, especially in phono stages. Mullard 6GK5 - These are perfect. Tavish Design Vintage 6SL7 Phono Stage. " The GE Black plate 12AX7 (and 5751) have an enchanting and beautiful sound. As a popular choice for guitar tube amplifiers, its ongoing use in such equipment makes it one of the few small-signal vacuum tubes in continuous production since it was introduced. 12AX7 tubes are very common in guitar tube amps from Fender and Vox among others (I like the Monoprice tube amp myself). The HH Scott 220 is similar but with a 6SN7, which has even less gain, and a 6J5 preamp tacked onto the front (the volume pot also moves to there). Tung-Sol 12AX7 New Production Preamp Vacuum Tube. But this one is not an exact replica of Western Electric tube; instead it is a 'plus' version with slightly different structure - for example, getter for More Info ». The type 5691 Tube is a "premium" version of the type 6SL7. TESLA E83CC - FRAME GRID NOS TUBES - MATCHED PAIR - TELEFUNKEN ECC803S. 300B Single Ended Triode vacuum tube stereo amplifier. Highly recommended. In my headphone amp, I'm using a 2c51 adapter with a WE 2c51 driver and two TS 5998 output tubes. 13 ruger9 5 years ago. Saves a hole. Square Getter. 6SL7GT Sovtek. The double ended 6F5 and single ended 6SF5 triodes are identical to the 6AV6,6SQ7, and 12AX7 triodes. For the whole story, read the "About" page. Some common octal tubes are 6V6GT, 6L6GC, EL34, 6550, KT88, 6SL7, and 5AR4. Here's a brief list of some audio useful loctals, and their octal equivalent: 7A4 - loctal 6J5 (1/2 of a 6SN7GT) 7AF7 - mu of 16. ANOS RAYTHEON LONG BLACK PLATE 12AX7 $35. I don't know what you are talking about with the Groove tubes things are they some kind of adapter?. While it is believed to be accurate, this list may unintentionally contain incorrect information. 3VAC supply. Victoria, Australia. 如 12ax7、12at7、6sl7 等這類管, 因此配合管座大小,我擇用 6sl7 當電壓放大管, 直交推 6as7/6080,即然直交,陰極電壓勢必會很高, 這次我就在陰極上作出以往不曾嘗試的電路, 經過我多次測量與試用,效果合乎我的要求,happy~~~!. Domestic US shipments between 1-7. Very low microphonic. This is my first successful vacuum tube project. 00, all inclusive. JJ Electronic ECC83MG - 12AX7 Factory Data Sheet: ECC83MG Our observations: Another 12AX7 variant from JJ. Until the introduction of miniature (Noval base) tubes, such as 12AX7 and EL84, the octal base was the most common and popular tube base. Instead of the 76 tube, I used one half of the 6SL7 for the first preamp stage and the other half of the same 6SL7 for the second stage of the preamp, so the schematic is the same, it just uses one 6SL7 per channel, and no 76 tubes. A solid-state MM phono stage can be added for $275. Ubiquitous use in such equipment makes it one of the few small-signal valves in continuous production since it was introduced, in 1946. Slightly taller than the Ruby & Tubestore 12AX7. The 12AX7 has the highest gain at 100, the 12AT7 is lightly lower and the 12AU7 is the lowest gain of the group. My Favorite Tubes and Their Substitutes by Robert H. ckt ver 2001) The equalization network values are textbook correct, but they "off" in this circuit, as they do not reflect the influences from the triodes' output impedances and the grid resistor's and potentiometer's resistances. Guitar amplifier parts, guitar amplifier tubes and guitar amp tubes 12ax7, 6v6gt, EL84. Very low microphonic. 6SL7 Power Tubes 2, 25L6. Let's examine how the distortion of a 12AX7 changes with the value of its plate voltage. The Flagship. shock-proof socket. Until the introduction of miniature (Noval base) tubes, such as 12AX7 and EL84, the octal base was the most common and popular tube base. In many cases, these tubes are interchangeable and can easily be swapped. This is the model that replaced ALL my vintage Fenders as my "Desert. The 12AX7 is the first choice for tube amplifiers because of its high gain and relatively low noise characteristics. Smoked Glass. Fender went back to a grid leak biased first gain stage giving the amp a gritty sound. A favorite is the 50's "Chrome Dome", black plate w/square getter. A while back I wrote about some tube rolling I was doing, and that I found that the Brimar CV1985 was one of the best 6SL7 types I've heard, and also the amazing RCA/GE 5691 Red base: GE branded version: I use two of those bad boys in the line stage of my Croft preamp, and they are fantastic, however, I'd like to introduce you to another. Just a preamp and I have it running into Fender PA with 2 5881 and a 12AX7 like a brownface 6G6B. This is still more than enough to overdrive EL84s or 6V6s. I think a 6SL7 be a good sub for the 12AX7 with the same 300 ma heater current. 174) I have the Sophia 6sn7's and no longer use them in my amp. Good for phase inverters or reverb drivers. The open sound with detailed, but not edgy midrange is to die for. Tube World Express is a division of Tube World, Inc. GE NOS LONG PLATE 12AX7 NOS $45. They are good quality and found in many Chinese amps and preamps. I just currently finished a tube preamp using a 6SN7 dual-triode,I've heard of really good NOS tubes to use,like the RCA red base,Mullards,and other various tubes,but these are usually expensive. Once upon a time there was only the 12AX7. This tube was first produced by RCA which called the 5691 one of it's "SPECIAL RED" tubes due to the red colored low. I select a 12AX7 the databook said that µ = 100 and Ra= 80K ohm I made R = RAK = RK = 3. Cathode Bypass Capacitor Calculator Basic Theory - using 21st-Century technology to design vacuum tube preamps, power amps, and power supplies System Design - a professional methodology for crafting a complete guitar amplifier. The 6SL7 is an octal twin triode with amplification factor (mu) of about 70. When you want the very best sounding audio tubes, shop at Tube World Express. The right amount of clean gain for bass IMHO. Share | Previous | Next. 12bh7/ecc99 The 12BH7 is a medium gain dual triode used in hi-fi amplifiers, pro audio equipment and some guitar amplifier circuits. Good post, Edmond. The basis for this amp started out as a post in a thread on the DIY Audio Projects Forum site. 6SL7 Tube Types in Stock TC Tubes and Audio Repair Repair services include tube and solid state gear, turn table set-up, and tube-testing in Twin Cities Metro Area. Optimized for the 12BH7 "super-tube", and can use 12AU7, 12AT7, 12AY7, and 12AX7. The '86 has more gain than one half of a 12AX7, but the 'AX7 can get more gain with the 2 halves in series, which is usually (but not always) how they are wired. The tube configuration was a little different as well. The valve sees two of these, or 64k). You have given me something to ponder and I am probably a little closer to trying it. The Flagship. In most applications, but not all, RCA 12AX7 black plate are fantastic. First test: Phono. Upscale Audio 2058 Wright Avenue La Verne, California 91750 (909) 931-9686. Gibson Tube Amp Specifications I would like to thank Björn Anger for permission to use the information contained here. Can be also used as replacement for 12AX7 in many applications. Tube Depot carries a selection of 6SL7 Pre Amp Vacuum Tubes. 1x 12AX7 EH, 1x Tungsol 6SL7, 1x 5Y3GT Sovtek, 2x 6L6GC EH Platinum Matched. My Experiences with Single-Ended EL36 Output Stages, by Graham Dicker, March 2003, October 2004. au email: saleswagner. The power supply utilizing three selected vacuum tubes (1 x 5Y3, 1 x 6V6 and 1 x 6SL7) incorporated with a newly design circuit. 6SL7GT Sovtek. Monday-Friday 8:30 am - 5:30 pm Pacific. Though 6SL7 is similar to ECC83, which NOS version is very expensive, and 6SL7 is even older. The 6SJ7 tested was very close to specifications, despite its age. Without going into some of the more obscure tube types, I played with the 12xxx series, 6SN7/6SL7 types, 5687 and the 6922/6DJ8. Let's examine how the distortion of a 12AX7 changes with the value of its plate voltage. Each is tested and guaranteed. What is this about? In this article, we SPICE power triode stages containing several triodes running in parallel. Short plate format for extra low microphonics. It has the same pinout as the 12AX7 but is not electrically compatible and is taller. 12at7,12bz7 & 6dj8/ecc88 etc. Ebb adjusted to achieve desired Eb. It is also much easier building a truly linear amp with 6SN7 than with the little 9-pin jobs. Various tube markings including United, Pinnacle, RWN, Tesla, Siemens, Dumont, Amperex,Telefunken, etc. Inicialmente pensada como uma substituta em miniatura para a válvula 6SL7, a válvula 12AX7 ultrapassou em todos os sentidos a sua predecessora não só pelo ganho, mas também pelos tipos que dela descendem. ckt ver 2001) The equalization network values are textbook correct, but they "off" in this circuit, as they do not reflect the influences from the triodes' output impedances and the grid resistor's and potentiometer's resistances. with an adapter with no problem in my socket modified Dyna Pass II. 6SL7GT Author: Tung-Sol Subject: FP-2004-06-13 Created Date: 6/13/2004 9:46:32 PM. 1st Place Tie: Mazda 6189 Silver Plates 3-Mica and 50's Valvo Long Plate Angled Getter. Both the 12AX7 and 12AU7′s are 55 dollars each and for an extra 10 dollars per tube you can get the standard 30-day warranty extended to 12 months. If you want to get an idea of the gain level of the 6SL7, try a 12AY7 or 12AT7 in there but again, I don't know if anything was done to your circuit to tame the 12AX7 (if anything) either way, it won't hurt the amp to try a lower gain, nine pin tube. and several designs were presented using various dual triode tubes. A good example of the remote-cutoff pentode is the type 39/44, which uses a 5-pin base and a grid cap, so it is interesting to experiment with. Tube World Express showcases the best sounding audio vacuum tubes that Tube World has to offer in an easy-to-navigate shopping cart format. They are also great for Hi-Fi stereo amplifiers. Very smooth and warm sound. In Figure 13. Fortunately, the 12AX7 can be used with either 12 volt or 6 volt heaters. with an adapter with no problem in my socket modified Dyna Pass II. ★★送料無料★★ 親切な真空管ヘルプデスク 無料相談 0120·194·380 プレミアムクラス 最高グレード 極上の真空管サウンドを求める方にお薦め·全数検査、210日間保証、72時間エージング 商品について ·新品 現行真空管 完動品。. Found 200 records in Search of Tube DIY Asylum. Known in Europe under its Mullard-Philips vacuum tube designation ECC82, in fact, the 12AT7, 12AU7 and 12AX7 or the ECC81, ECC82 and ECC83 are all exactly the same vacuum tube but with varying electrode spacing and grid pitch to achieve the different characteristics. The right amount of clean gain for bass IMHO. These days what has caught my eye is either an authentic EAR 834p (probably used), and a Tavish Design model. This is not entirely true. Great tubes with great sound. ANOS RCA 12AX7A/7025. However, in 6. However there is an important difference, a 1k "stopper" resistor is added at each grid input. abt 70% of 12ax7… funky old tube 6SL7 microphonics may add hum/noise but a decidedly more old school edge. 12AX7 / ECC83 / CV4004 / CV492. The Tung-Sol 12AX7/ECC83 is the gold standard of preamp tubes favored by guitar tone junkies, and one of the most important links in your tonal chain. This preamplifier replaces the Unlimited and fills the void with lots of upgrades including an ALPS remote volume control as stock. Why would you replace the octal 12AU7 (read :6SN7)with a 12AX7(6SL7) BTW, the EL 34 is much easier to drive than any 6l6 type. If you are looking for NOS Pre-amp tubes for your Hifi audio system, guitar amplifier, or tubes for other types of vacuum tube gear, we probably have it in stock! If you do not see what you are looking for, then please contact us!.
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