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45 tube amp schematic Back to the Main Schematics index page # Marshall Schematics - File Size 45: Marshall_b150. JTM100 1968 Super PA, 100W head. 1; 2; 3; First Prev 3 of That is a very good point about the 45 tube's grid bias, and transconductance. There are only two improvements since then. Sound is probably very similar to a 26 / 45 amp, which is to say magnificent! So I say go for it. It was the PA ver­sion of the 1959. The Tube amp Library of information Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips. Prev. 2012-09-03 12:08 pm #21 2012-09-03 12:08 pm #21 There is nothing really different about building a 45 amp for headphones or for speakers. HB . Schematic diagram 45/2A3 Single Ended Amplifier Modify from 2A3 SET to ELRog 300B Single Ended Amplifier on Dec 3rd 2016 So, instead of just building from a stock schematic, I took the JE Labs 76-6SN7-45 design and reworked the PS in PSUD2, and also modified the cathode bias scheme using a trick Dennis Had taught me. RE: Rk Bypassing - tube wrangler 22:48:27 01/25/15 (0) How Rude of you - smart845 00:28:40 01/26/15 (5). The front panels were marked with MkV and JTM100. SCHEMATICS AND LAYOUT DIAGRAMS Here are hundreds of original Fender schematics and layout diagrams, available for free viewing and download. You can get the JT45 kit in the Online-Shop and many other items which you might need for this amp like faceplates and headshells: TT-Shop. jpeg - 22 Kb 3: 100poweramp2a. Comments about "con men" or whatever are simply baseless and without merit. Yes that is the schematic. It normally takes up to 24 hours to receive the download instructions via email but please allow 1 or 2 business days for the schematic to My plan is to use the signal circuit from the Simple 45 amp, and power supply and OPT spec's from this guy: . Thread starter sonix; Start date 2004-07-11 12:40 pm; Prev. The only indirectly heated tubes allowed Finally I tried the 45 tube there is no going back to anything, the 45 tube is end for me. Building a el-84 tube is more realistic. Still can't find a schematic. Build an outboard PSU to give the 845 the stupid high voltage it needs, slap some different output transformers on the thing and boom, done and done. 11/27/2005 Other deviations from the typical JTM45 schematic/layout: All grid stoppers are located at the tube sockets. Either 6V6 or 6V6GT pentode tubes can be used in the output position. If tube will be with auto bias and I plate about 55-60 ma, U cathode = 45 - 49 v on resistor 820 ohm /If You use res. Schematic with 4x ECC83 & 4x KT66 (Marshall). Gibson Tube amp schematics, Hoffman amps tube amp schematic library. Joined 2006. Many people drive the GM70 with D3a tube. Back to the Main Schematics index page Fender_leslie_16_18_adapter. The 6V6 in triode is as linear as a triode 45 tube and sounds more energetic. 820 ohm for 2A3 and 1,5 kohm for 45. I guess I could (and likely will) settle for the lower power JEL simple 45 but still would like to see what is available in a parallel 45 SET. pdf - 86 Kb 47: Peavey_pa400preamp. Check Details. Assorted Amps - there U1011 (1 - 48KB, 2 - 144KB) U1221 (130 KB) U1236 (91 KB) U1246 (97 KB) 25W Tube Amp (111 KB) U1000 (131 KB) U1050 Bass Amp (103 KB) U1061 (115 KB) U1075 (120 KB) U1086 (132 KB) U150RX (117 KB) This is the real schematic for how the Westbury Custom and Super Custom were wired with the 6-position KT120 Push-Pull Tube Amplifier Schematic (Oddwatt Audio OBHO) The amplifier will deliver approximately 45 watts RMS with a bandwidth of 10 Hz to 25 kHz +/- 0. I guess the 45 tube has a lot of merits on it's own. Yamamoto 45 clone amp with DC filament supplies. JTM-45 Series The 1st Marshall 1961 Lead 45w 1962 Bass & Lead 45w (Bluesbreaker) 1963 PA 45w 1985 PA 45w 1986 Bass 45w 1987/T Lead 45w 1989 Organ 45w JTM-50 Series 1961 Lead 50w 1962 Bass & Lead 50w 1963 PA 50w 1985 PA 50w 1986 Bass 50w 1987/T Lead 50w 1989 Organ 50w JTM-100 Series 1959 Super Lead 100w 1959T Lead-Trem 100w 1968 Super PA Hi Svein, The schematic is kinda of a mess but if you page down to page 7 you will see the power amp section and the 4 El84 power tubes. With reverb and tremolo. pdf - 245 Kb 48: The Eaton 45 schematic is unlikely to have a secret recipe for building a SE 45 amp unless you are trying to fix one, then it should be easy enough to trace one out. A potentiometer is added across the cathode resistor of the 5842. . This amplifier is based on a tube intended to drive the vertical deflection circuits in larger televisions, the 6EM7. Here is the Tube 45 or Röhre 45 ID3112, Triode, vacuum, UX-Base (4 Pins (2 thick, USA 1924, UX) and Power/Output shown. Hi-Fi Professional Tube Amplifier 17W Revision 1. I had pretty much settled on the 45 tube over 15 years ago, having also owned a couple 300B amps and Welborne 2A3 Moondogs as well. SIPP KT120 Tube Mono Block Amp Schematic (12SL7 SRPP input) - [45 Watts, SIPP, class-A, UL] - (Photographs) NEW ; Compactron Tubes. My main amp is a 27 driving a 71A, direct coupled. Welcome To the Hoffman Amplifiers Forum Look at the 47 amp schematic just below the 122 crossover drawing, crossovers are exactly the same. 293. Vacuum tubes are essentially amplifiers, so in the simplest amplifier configuration, the tube needs only a the If You will use on tube rectifier 320vAC, You will have +U about 350 v /with switched on ampl. Solid State OPT; Totem Pole Output; Super Tubes; Single Ended Output Stages; This is the schematic for the Tubelab SE amplifier (TSE). speakers to room-filling levels indicates two things: first, amplifier power is Alan Eaton Single Ended Type 45 Amplifier. The last 26-26 DC 45 amp schematic. Subscriber. 6 ma, 33. I have successfully used larger (60 to 80 watt) push pull transformers with the 45 tube at 30mA. Home; Help; Search « Reply #16 on: April 08, 2010, 12:01:45 am . We are always adding more as we find them so check back often. It employs 6SN7-6SN7-2A3. We believe that this is the most complete, highest resolutio Schematic and Layout Version 2021 incl. Product: Yamamoto A-08s Single-ended '45' Power Amplifier Manufacturer: Yamamoto - Japan Cost, approx: 2500 Euro Reviewer: Geoff Husband - TNT France Reviewed: November, 2009 [Italian version] Introduction. Ale Moglia says: January 28, 2020 at 9:53 am. It includes schematics, the BOM and links to videos. The on board power supply uses FRED diodes for the bias (negative) voltages. With point to point it's easier to modify the Compare the two schematics you can find the construction is nearly the same, with only difference in the choice of output transformers, some additional feedback resistors on the 6L6SX, the use of hum pots on the SV-2A3,and also the values on the cathode resistors. However, aside from the UX-5 tube socket requirement, the 46 is not quite a 45. Joseph Esmilla's simple 45/2A3 circuit, which uses 1/2 6SL7 per channel as a simple voltage amp. in 2021 Sunaudio 45 tube amplifier Tube amplifier schematics stereo circuit audio vacuum amp valve power radio vintage electronic schematic speaker wkinsler 6v6 diagram watt five HiFi Amp Schematics. As much as I like to say these ballons / globes tube sounds better I am working on my new ( to me) Victor RE-75. The heart of the design consists of a 6SL7 SRPP upstream of the 45 power tubes. Parts arrived on time, now installed and working fine. Leslie 45 cab. If one is comparing "like" amps-- pushpull 45 vs. pdf - 45 Kb 218: Fender_musicmaster_bass_schem. The main feature of this schematic is the directly coupled triode without the use of any interstage transformer or a coupling capacitor which fancied me. Lots of schematics there. The problem in this case was that the customer had 3 different sets of headphones in impedances from 40 to 500 ohms. Back to the Main Schematics index page # Wem Schematics - File Size : 1: 100poweramp1a. For getting your feet wet. So, pick your favorite schematic -- I think Tubelab. PP EL34 Tube Amp Schematic by Mullard with Dynaco A420 (EF86, 6CG7 input) - [50 Watts, PP, Class-AB1] 6L6, 5881, KT66, 7027 - beam power pentode. Ampli tube 845 + Tannoy Canterbury se. The control grid of the 6V6 output tube Prowess Amplifiers offers resources for the guitar tube amplifier builder. This schematic shows slightly different input voltages vs original. This page covers all things related to my 6SQ7 amp. I recently built a vacuum tube amp 45 tube amp schematic. vinylkid58 This approach to SE tube amplifier filter design is 100% legitimate. pdf - 69 Kb 219: Fender_musicmaster_schem_layout. allied333 Audiophile. Rolling driver tube makes more of a difference than output tubes. k. "Single This amp was fitted with 2x 6CA7 (EL34), 4x 12AX7 (ECC83), 1x 6AQ8 (ECC85) and 1x 5AR4 (GZ34). The two triodes in the ECC83 (12AX7) are connected in parallel to obtain a low internal resistance. Part. 45 Tube Amp Schematic. jpeg - 88 Kb 4: 40w_power_amp. Joined Jan 15, 2018 Messages 303 Likes 706. Leave pushed in to access the rhythm channel of your amp and set it around 9 o’clock am. Warning! Care is necessary during construction! The voltages used in this amp are 46 amps, high efficiency speakers and Jazz are a wonderful combination, IMO. pdf - 465 Kb 221: The Tube amp Library of information Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips. The higher the setting, the louder the output and tube saturation. All are available for free download. 6V drop from the B+ voltage. y I also have two Tubelab SE amplifiers for comparison. pdf - 270 Kb 46: Marshall_bass20_20w_5502. top of page. Also, here is an inside look of the Bottlehead Paramour mono block 2A3 amps also built This thread has the goal of collecting schematics, pictures and comments of any kind about amplifiers where ALL the signal tubes are directly heated - both input and output tubes. I really want to build a Yamamoto A-08S clone, but I am not sure what transformers to use, and the Eli, I already have a handful of 45 tubes and do not plan on spending big money on globe 45's. A 6V6 amp if definitely on my list of future projects. rwidebrook, Mar 27, 2019 #70. TriodeLuvr Hi everyone, I am pleased to present my fourth tube electronics project. Marshall Amp Schematics to assist you with your amplifier repairs and modifications. Explore the design and testing of three different single ended 45 tube amplifiers with constant current sources. Also used: Thöress Transformer. Joined 2003. . Will take a few shots of the insides tomorrow but for now I'm REALLY enjoying Although this amplifier was designed around the 2A3 output tube in parallel single ended operation, 45 tubes can be used if desired. Attenuator guitar diy diagram circuit switch workshop build own bypass basic here. There are hundreds of pages of Tube amp information on my library page. All of these PDF Magnatone Tube amp schematics, Hoffman amps tube amp schematic library. « Reply #9 on: June 05, 2023, 04:03:45 am and some of the schematics that are used for tube amplifier power supplies, almost all of them with 10H chokes, but there are also some with 5H chokes, and some with a double filter with two chokes. Peavey Tube amp schematics, Hoffman amps tube amp schematic library. When you build an amp like this it is easy to get obsessive over the passive components such as caps, resistors I thought about warning against building this design, but didn't because unlike many typical 845 designs the voltages here are in the same range as you would see for a drd/monkey/freelunch direct coupled design using a 2A3 or 300B. Schematic and Layout PDF. Back to the Main Schematics index page # Peavey Schematics - File Size Peavey_musician_power_amplifier_schematic. 4 ma, and 38. -User Name-Password. Last edited: 2019-05-16 9 45/2a3 single ended tube amplifier circuit for 45 tubes only use adjustments. This one has FOUR filter capacitors plus the common. Your schematics look awfully close to some Sun Amplifiers from Japan (perhaps inspired by those models). Hoffman Amplifiers Tube Amp Forum, Leslie 45cab/47 power amp. Reply. This is the only design that will safely put the 45 tube in its best working operation point, Your 45 mono amps powering my high sensitivity OB line arrays are simply amazing. Tube Amplifiers Home-» Schematics-» Univox Schematics. y and el11 mono amplifier d. Simple 45_2A3_amp_schematic. You see, even though it was way outta vogue by 1965 (the date on the schematic), this amp features a grid-leak bias on V1, what that means is that the input stage is fairly wimpy and quite The reason being that NOS tubes are becoming scarce in really new condition and current production is expensive. I really do think that the venerable Type 45, especially in the old globes from the 1930’s, are the pinnacle of single ended sound, at least as far as I have yet experienced it. A recent customer comment: That went smoothly. 45 tube amp schematic Thread starter castorG; Start date 2012-08-29 9:47 pm; Status Not open for further replies. SET 45, or PP 2a3 vs. I know there's a later iteration of this circuit to a 6SL7 - 45, but I have wanted to use some of these 76s that have been lying around for quite The 45 tube gives around 2W of audio output with the same schematic. The 12AX7 is only used for the tremolo! And the 6X4 is common enough, I think. Ironwood chassis and using Tamura/Tamradio output and power transformers. Click here to see the schematic. PDF. I'm looking for a good 45 tube amp schematic. Wessels, PA2HWG). First and foremost, I'm keen to use a pair of 46 tubes instead of the classic 45, with G2 tied to the With 40 W RMS available per channel on near 100 dB efficient speakers the low frequency distortion often heard from 300B SET amps is a non issue and diistortion is vanishingly small. 1954 – preservation sound 45 W Stereo Tube Amplifier - Electronic Circuit. The first JTM45 amps had no model number printed on them. Hoffman Amplifiers Tube Amplifier Forum » Amp Stuff » Tube Amp Building - Tweaks - Repairs » JTM45 Schematic and Layout Tube Amp Library: Tube Amp Schematics library: Design a custom Eyelet or Turret Board: DIY Layout Creator File analyzer program: DIY Layout Creator File library: Transformer Wiring 2A3 works with plate current apr. I need to design a low cost amp that outperforms the 6DN7 amp, works at least as good as the Tubelab SE with 6L6's, but costs less, and hopefully doesn't get shamed by my 300B amp. It has a 4Ω output. Stereo tube amplifier Tube stereo schematic amplifier amp bass circuit nine circuits valve diagram wkinsler gr next saved gif visit Hi fi amplifier schematics c. A vintage 80 tube did the Tube Preamp Schematic of Tubepreamplifier with WE417A or 5842 Triodes The Western-Electric 417A (a. I don't know the difference - some say the 45 is single ended and the 45b is p/p. Maximum plate dissipation with grid 2 tied to the plate is 5. Here we've listed our collection of hifi amplifier schematics. Thanks Anks, I messed with the amp for a few minuets this morning and have it up and running on all three channels. Heck I'd love to see the schematic on the 27/45 There are many talented people on this forum maybe someone will draw up something for the 26/45 quest. You do not want the Emitter of a transistor to be the plate load for the input tube (Emitters are low impedance). jpg - 24 Kb 47: Magnatone_m195_4j. Can anyone refer me to one? Maybe I could use them as drivers in a 45 type tube amp??? Jeff . In terms of the schematic : a tube rectified cap input power supply with a 10H Nicely done SET amp. jpg - 101 Kb 5: 40_100w A power amplifier with the '45 or 2A3 as power tube will not exceed 350 Volts B+, and because of the '45 being one of my all-time favorite tubes, this would be the choice. I have (had) several 45 amps and there is no 45 tube amp that I don't find magical. If you need a vintage hifi amp schematic for your amp repair that is not listed here, contact us and we'll try to locate it. It is a great kit for advanced builders - based JTM be tested in several variants: JTM45, 1959 SLP, one wire mode (2203/4). 211 tube. O and the schematics they give The Tube amp Library of information Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips. I'd like to see a schematic of the amplifier that you've built, it sounds exciting. Here is amp schematic as my original posting may disappear. All the way down at the last page called page 2 you will find the power supply schematic which contains a -15v dc supply. SANEI 211 SE tube amplifier with Hirata TANGO FW-150-10S, NC-14 * BIG Monster ! By Tango I will include the schematic for futher maintenance. about 700 ohm with 55 ma, Your +U on the tube will increase/. Note the hardware shows a 12AX7 where as the schematic calls for a 6SN7. built it in 2 days on and off for the money you can not go wrong. Before 45 tubes are used, the bias should be turned all the way down (to the left) to minimize idle current through the output stage since the 45 has reduced dissipation ratings compared to the 2A3. pdf - 1491 Kb 45: Peavey_pa120_preamp. But the availability of both the 205d and 45 tube meant that my dream amplifier project need to wait for a while. SET 2a3, the SET amps tend to develop a more enveloping soundstage so one feels more emersed in the sound. There is NO step-by-step Fender Amp Schematics to assist you with your amplifier repairs and modifications. g. Acrosound Schematics Dynaco Schematics Hoffman Amplifiers Tube Amp Forum, Looking for a simple 100W amp schematic. If you put 2A3 tubes on vintage 45 tube amps the power transformer heats up schematic from this amp 45/717a/5u4. It is a single-ended amplifier using the 45. The schematic here is the 45b. So, I would suggest using two 10 Ohm chokes, in place of any single 429 Ohm choke, Seems like 45 tubes need AC according to a 6moons review I read. Power Supply Design. View the Lists of vacuum tube amp schematics I have available for vintage amplifiers and Public Address systems below. 35 mA. Theme Wem Tube amp schematics, Hoffman amps tube amp schematic library. Overall the direct coupled 2A3 is more transparent and has a little more bass, but I believe the Jupiter copper foil caps and EML tubes are what allows the 45 amp to be as good as it is. Ideas. The-Planet. Alan Eaton 45 Tube Amp Contact Info THD+N Portus. Readers of this site know that I’m a big fan of the 45 tube. It easily beat another previous 46 amp built by a pretty If you compare the two schematics side by side, you can see that the main difference is the use of a cathode follower in the driver stage and in the way the output tubes are biased - the first amp has a higher plate voltage and plate dissipation, at values that I 45 Author: RCA Subject: PM-JA-FP-2004-01-24 Created Date: 1/25/2004 12:58:12 AM I said ! suppose be not so good by one tube drive with inter stage transformer. I need it as simple as possible (so I can spend more on the single pieces), but with a high-end sound since it will stay with me for a Complete 45 SE Amplifier Schematic This file contains all the latest updates for the amplifier, and power supply schematics now in unrestricted/printable PDF format. 5K. He desired that the amplifier would work with all of them and any other headphones that he may acquire. Dial in your rhythm A schematic is pending further voicing of the circuit, mostly auditioning various coupling capacitors. schematic from this amp 45/717a/5u4. I am lookinf for a fairly simple SE schematic to build an amplifier with the 01A type tube as the power output tube. 45. Fender Tube amp schematics, Hoffman amps tube amp schematic library Fender Schematics. About. pdf - 4955 Kb 49: You swapped the Emitter and Collector connections in the updated schematic. Thread starter baikostov; Start date 2007-10-07 12:32 pm; Status Not open for further replies. This amp had 4 channels and 8 inputs. Member. Distortion Joined the club today. A 45 can put out up to about 2 watts; my amplifier only did 1. SubscribeSubscribed Unsubscribe. Worked as an 45: pdf Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. I Looking at the schematic, the 1H4 is powered by 45 volt batteries, thus no rectifier, and driving 2kohm headphones from the plate - think of it as the primary of the transformer. Please login or register. 400 Ohms). Given its designation, one would think that it is just a 45 with dual grids. It had a small amount of hum and I fixed that issue. Magnatone Schematics. See the schematics, FFT plots, and sound quality of each prototype. I am a "tube guy", back in January I decided I was going to start building my own gear. Welcome To the Hoffman Amplifiers Forum December 28, 2024, 07:58:07 pm: Welcome, Guest. And that is at one specific set of quiescent parameters. Radio tubes are valves. Building Report of the JTM45 kit. com's TubelabSE is probably A single tube 45 with step up input transformer can get you there - maybe On the other hand I know there are much more expansive 45 tube amps (e. BTW, building mono's is more expensive. png (612. 1 - Gadgetronicx. Schematics can be found at large numbers but I would also suggest to go for something what might really fulfill your dreams; a transformer coupled design, that eliminated capacitors where possible. But pretty much all the users of my 45/2A3 amps only use 45s, as I am doing myself best regards Thokas This Single-Ended (SE) 6V6 and 6V6GT Tube Amplifier Schematic is from the book Build your own Audio Valve Amplifier by Rainer zur Linde. Triode Lab 45M2 ffx / 45RS-R) so I am wondering if I could do even better than Yamamoto? Do the more expansive amps have better parts in them? If you start with a printed circuit board you're tied to using that schematic. Photograph of an Elk Twin Amp 50 top. The fact that less than two watts drive these 7 foot tall, 350 Lb. Yamamoto A-08S RCA 45 tube amplifier original schematic. 5 dB (with the negative feedback engaged). Jump to Latest soulmerchant. Nov 17, 2023 #11 Yamamoto A-08S RCA 45 tube amplifier original schematic . 1. 2009-12-29 2:39 pm 01A tube amp Schematic??? diyAudio Community diyAudio Schematics Amps. Single-ended triode (SET) amplifiers with Type 45 triode tubes are special, and two amazing gifts, a pair of Tamura output transformers and a blank aluminum Instead, tube amplifier manufacturers who sell expensive amplifiers using low-quality transformers should lower their prices. It is not difficult to make a 45 amp that can deliver the goods with complex music but unfortunately the vast majority of builders just copy old schematics and feel that the 45 tube amp has to have these cons which sadly isn't true. 5W compared to 10W for the 45. Main page » Kits » Tube Amp Kits » 45 Watts Series » TT-Kit Marshall® Style JTM45 / KT66 and the reading and understanding of schematics and dealing with measurement device is highly recommended . The Collector needs to be connected to the plate of the tube. 300bs are pretty common driver tubes for the 845. of course it is no where near a good top end valve amp. Schematic. interchangable 2. 0 on the last tube. George is a well What I seek is a tube amp for Hi Fi audio as a class AB. 37 kB, 580x601 - viewed A 2a3 amp is nice. Home. Go. If you could post your schematics, I'd love to build a 45 or 46 amp along those lines with currently-available ITs. Do you have a Marshall Guitar or bass WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. It has two dissimilar triodes in one envelope. Jump to Latest B. Univox Schematics: 1000: 1011: 1050 Bass: 1061: 1075: 1086: 1221: 1226: 1236: 1246: 150 Rx: 250 PB: 255 R: 4100: My former favorite amp was a single 45 driven by a 24A tube. In the Navy I went to school, studied and. com had to say about the 45 tube in his design. The EL84 are running at 35. For filament transformers for I did not use negative feedback on my simple stereo SE 45 amp. Tube-Power-Amp with 300B/310A and Partridge-Transformers Contact & Imprint Deutsche Version | This site uses cookies. Thanks Pascal. Marshall Schematics. artsandmedia. It's rare to hear this magic. It's my preferred guitar amp tube, and I collected a bunch of them Here is the schematic for the amplifier portion of the Tubelab SE. a. jpg - 885 Kb 46: Magnatone_m192_5. Does somebody have schematic of Atarashi Parafeed 845 amplifier ? It is a 845 drive by a 6CA7 and i think it would be interesting with 845 and KT88. In many cases, there is no shipping charge when the production of my amplifier is completed. Dual power supplies etc. Tube 45 aikido amp schematic se amplifier tubecad diyaudio tubes power 12ax7 double input amplifiersRmaf afterthoughts Attenuator guitar diy circuit diagram build amp workshop own pad complete ourDiy workshop: how to build your own attenuator. 5070A. I will have to try this. I have read some threads at Bottle Head about a parallel 45, at least the idea of one. Vintage Kent DR45 Tube Guitar Amp Amplifier Fiends, I can't say that I've EVER ran across an amp that has me scratching my head more than this Kent DR45. So, I just put new caps in the crossover. This is the same amp as the Epiphone EA-32RVT. What you want to look for primarily is a SET amp that operates in Class A2 mode, this is a huge advantage. This SET amp noticebly betters my best P-P amps for tone and 'presence'. 2 ma, 35. Schematic of the Twin Amp 50. Apparently this used to be the Twin Amp 45 but I guess Twin Amp 50 sold better. Peavey Schematics. Gibson Schematics. Might just have to build and design from scratch. gif - 85 Kb 48: I am working on a new 45/45B tube SET AMP project for 2023. 45 Amp Hi, I built the project outlined in Glass Audio magazine (3/95). 45 SE Amplifier – revisited – Bartola® Valves. ex. I even found a modded schematic that allegedly gets it closer to the Gibson GA8-T it's supposed to be patterned after. gif. I feel fortunate to have been able to experience Redboy’s 46 amps with my old Stephens coaxials (~100 + db sensitivity) a while back. 56 KB · Views: 1,831 5842-loadlines. If your output transformer can handle more current, your amp could probably be converted to 2A3 which would deliver double the power. Khoa Audio. I took the Russian 6H9C NOS 1975's for its quality and availability. Who can suggest a schematic for a 45 single ended amp that can be DIY'ed easily enough? 2 stages only please and DC heated Will only be used on the mid horn in my system. This is the project page for our EL34 6SQ7 tube amplifier build. Few examples over the blog around several circuits with source follower, please browse around All schematics So enough about all that other stuff, let me tell you about the Basic 45 that Handmade is offering. Mingleberry said: DIY CCS-loaded 45 Tube Headphone Amp. You can build a 45 amplifier with a 30mA output transformer. There's a U-45 and a U-45b. ) The 12. diyAudio Community diyAudio Store. You can use in auto bias mode different cathode resistors, p. 500V is not a particularly low voltage, but the original poster indicated he did have some experience building amplifier kits. The 45 is a linear tube and the sound does not change much between various makes Hey there folks, I'm thinking about building a modified version of Gordon Rankin's Bugle amp to use as a headphone amplifier (mostly for a pair of Hifiman Ananda - 25ohm and 95db / mW). Also, here is an inside look of the Bottlehead Paramour mono block 2A3 amps also built pedal is the bass section, so that would make sense. I know these tube hard to drive. Manual and Engine Fix Library; 45 Tube Amp Schematic 45 Tube Amp Schematic 12 Sep 2024. mostly 45's, 2A3's and 300B's. One is a high gain, low power unit intended as an amplifier or oscillator, and the other is a higher power unit intended to drive the magnetic deflection coils on the back of a CRT. T. Another good way to learn is to get hold of a vintage tube amp and its schematic and spend some time studying the wiring underneath while trying to visualize the circuit flow from input to output. jpg - 165 Kb 48: Magnatone_m20. I built my 45 tube amplifier after reading what George Anderson of Tubelab. I love my SE 45 tube amplifier as I am sure that others on this forum that do too. (Thanx to H. I prefer the SiC ones. i. pdf - 70 Kb 46: Peavey_pa200. Silicium steel cores with 0,05mm 2A3 works with plate current apr. 5 watts per channel, partly because of the low gain of the 12AU7 that could not put out as much peak voltage as the 45 bias voltage, and the slightly low B+ voltage I had to work with. Seductive, balanced, crystal clear, The number one reason the UX-45 tube isn’t more widely used is that it outputs a mere 1. Doing fine Trans Drived Single Ended Amplifier on 28th July 2010 Schematic diagram is very simple almost circuit diagram is above ,just testing now need more adjust Tung-sol 45 and TransDrived single ended amplifier 45 Single Ended Trans Drive Amplifer I am a satisfied user of goods TAD - last kit JTM 45. The 820 Ohm common bias resistor gave 34mA per 45 tube, 68mA total (I only had one filament winding, so I could not use Remember this amp is out of a 45-P and it is slightly deviating from the schematics I can locate (reference the model 45 with the PP6L6 design). This amp was introduced in 1955. For a 2A3, 6B4G, or 45 stereo amp, I would recommend the Hammond 273BX or 302AX, or the 273X for a monobloc amp. 5842) has a very high transconductance, a low internal resistance and a high plate-current. Same goes for the filament supplies. Forum Donor. And the transistor is a PNP, the arrow of the Emitter needs to point into the transistor. Maybe I I’m currently using this with a 46 tube via adaptor and driving this using the 6AH4 preamp ( also built by Thomas) and the sound is just breathtaking. jpeg - 107 Kb 2: 100poweramp1b. 845 audio amplifier push pull 211 power single sakuma supply ended stage amplifiers altec px25 amplificatori Tube amplifier schematics pdf Tube preamp schematic. Budget 300B Amp; KT120 Monoblock Amp; EL34-6SQ7 Amp; 47 Globe Tube Amp; 6BM8 Amp; Color Pre-amp; The circuit of this amp is identical to that of the GA-6 Lancer and the Epiphone EA-30 Triumph amp. On the tube You will have about 290 - 300 v. As in every tube amplifier, a reasonable amount of transformers are part of the design. I've owned the Yamamoto A08S which was wonderful and schematics are available but perhaps there is something else simple Thanks! There was none. Reactions: MickeySmile, Lavane and vinylkid58. Tube rolling is not required for best results. Driving the 45 into A2 or AB2 will ask for high peak current. These are invaluable reference tools if you are digging around inside of your vintage Fender amplifier. Thread starter L0rdGwyn; Start date May 9, 2020; L0rdGwyn Senior Member. 8 KB · Views: 1,648 With a 3 stage amp a DHT input tube is essential to the overall sound. The normal and bright channel mixing resistors are at the volume Here is the schematic for the amplifier portion of the Tubelab SE. EB-202S, Twin Amp 60 The Tube amp Library of information Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips. Joined 2008. Tube set 45 + 12AU7X 2 + 6CA4 / EZ81 X 2 I need 30 -35 participants to start this project. 60 mA and a 45 tube with apr. You will see that it is similar to the third version of the Simple 45. Those were sold to a nice fellow in Portland. Get about 17-20W power. Please visit my Tube Amplifier Forum Here's the place you can go to ask tube amplifier questions. 34mA x 400 Ohms primary DCR = 13. pdf - 182 Kb 47: Marshall_bass_100w_3510. New 845 amp. baikostov. Thanx for the tip on using a grid choke with this tube. Like the Will Vincent 801a, this amp is the epitome of 8 thoughts on “45 SE Amplifier – revisited” Tom says: March 24, 2019 at 12:16 am Hi, alex！what type of mosfet do you use to drive the 45 tube. Other schematics featured in Mechanics Illustrated, Electronics Illustrated and similar related publications. Pen 45, tube pen45; röhre pen 45 id12864, beam power tube El86 amplifier 10 El3n(t) single ended amplifier d. diyAudio Id like to know if any one can suggest some simple tube schematics for me, im looking to build something small & into 2 mono block's for my Ribbon tweeters, its just a project im going to take on for this winter, gather the parts and build, then tweek more and more after that. Black-Flag Mod. PDF format. Matt ships the amplifier with a good sounding play-tested set of NOS tubes. 1; 2; First Prev 2 of 2 Go to page. Not surprised the circuits are basically identical, there wouldn't be any real point in making 2 completely different amp designs, just need a few tweaks for different transformers. GA-15RV Maestro, 14W 1×12″ Combo GA-15RVT Explorer. Here is the 2A3 under construction: I wouod suggest to go for the 45 triode because ist´s a really singing tube. 8uF were both reading ~30uF. I'm very tempted to go with a Globe 80 just for sh*ts and giggles, but have a nice NOS 5Y3GT if I stick to the schematic (arent the 80 and 5Y3 pretty much the same electrically ?) I recall my audio buddy Dan using a Tube sherwood power amplifier sch manual service 1st preview schematics 45 tube amplifier schematic Amplifier schematics electron Pdf rockola power amp diagram. I designed this 1. andyjevans. here is the original Loftin-White 6SL7 SRPP / 2A3 Single-Ended Tube Amp Schematic. The housings and the Mains-Transformers are designed for the use of different Rectifier- and Driver-Tubes. May 9, 2020 #1 Hey ASR - wanted to share a project I just completed. It only puts out 1250 mWatts, 750 mWs less than the 45's 2000 mWs. The amp is the same (essentially) circuit as the Deluxe Classic that I reviewed previously except that the voltage is lowered to mate for a 45 tube (there are a couple of other minor changes in parts values but no basic circuit changes). 8 watts. TKD potentiometer and an option to use this amp as a preamp as well. This one was inspired by a schematic from the Japanese Isamu Asano. There are hundreds of pages of Tube amp information Tube/Solid State - Tube, or solid - state rectifier selector Front Panel Controls: Master: The master controls the overall volume of your amplifier. Wem Schematics. What you might lose by adding a stage you gain by the high quality of I built a simple 2 stage stereo 45 amp for use at work. The tube is very linear and have good sound reputation. Still, a regulator is your friend here. png. Projects. Hi I brought a cheap DIY valve amp from ebay, it runs 2@ EL34 2@6n9p and 1@5z3p cheap chinese diy but sounds pretty good altho they say output is 13w*2 but I think that is in chinese watts lol. So my last take on the 45 PP amp is Class A1 with just few volts swing into positive grid possible. Member Schematics, Description and Pictures of DIY Tube Preamplifiers and Tube Poweramplifiers ; Single-Ended Power-Amp with 112A/45. output tube 45/2A3. You won´t be disappoiinted. / After OT - 340 - 345 v, IMO. I also tried the 46 and 50 tubes, the 45 tube is still better. GA-15 Maestro, 14W Amp. output power 2W 45 tube 4. to begin with. pdf - 166 Kb 220: Fender_pa100. Industrial Strength Amp; Clear Lexan Amp; Tubelab SSE Test Amp; Customer Builds; Articles. 833A Tube Amp Schematics. I have custom built The Tube amp Library of information Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips. My favorite rectifier tube in this amp was an Arcturus blue glass 80 globe. My mystery is that no schematic I can find matches this particular amp ( Victor type 245). The interest in this project began about 4 years ago. Do a search in the tube amp section. "Iron". Single Ended Tube Amp Schematic. (2) #42 TUBE Ken-Rad, Delco Radio Amplifier Pentode TV-7 ELECTRIC 210 RADIO SERVICE MANUAL Tube Power Amp Schematic of Single-Ended Power-Amp with 112A/45 The best Capacitor is NO Capacitor! That’s why there is a Lundahl-Interstage-Transformer between the Driver-Stage and the Power-Triode 45. I make all my 45 amps switchable between 45 and 2A3. Vtg Rca 45-ey-2 Record Player Tube Amp Restored Watch It Play. I am a man aged 45 and married with two children aged 9 and 15 I've got the ability to Marshall Tube amp schematics, Hoffman amps tube amp schematic library. 6 watt 45 amplifier for a friend it can be configured for 45,2A3 or a 300B as the amplifier The Tremolo version was an idea of Pete Townsend but it wasn’t very popular and not many of these amps were produced. Do you have a Fender guitar or bass tube amp that needs repair or modifications? Here you will find our collection of Fender schematics. 5uF and 7. Skunkie Designs. Yamamoto A-08s Single-ended '45' Power Amplifier Bloody gorgeous little amp. A really good SET amp is surprisingly dynamic and lively sounding at lower volume levels (the lower one goes in volume the bigger the advantage of SET amps). Projects Search Prowess Contact. You need good gridstoppers with With schematic design I foreknew only the one thing: it must be Single–Ended Direct–Heated Triode Amplifier. It looks identical to the typical one, except there are a few different capacitors and resistors not mentioned in the Riders manual. 2023-07-25 3:08 am #5 2023-07-25 3:08 am #5 Schematic for 845 amp with 211 driver. Super Tube SE; The O2 Amp; Simple 45; 833 SE; Construction. Back to the Main Schematics index page # Magnatone Schematics - File Size 45: Magnatone_M15_3x8. If one uses that power tube life will be shorter. We have a huge schematics inventory, projects section and forum. I am excited to hear the magic of 45 tube SET amp. Try a RH-84 amp. The third sheet is the audio section of the circuit. output transfomer PT and Choke -->Hashimoto 3. pdf - 236 Kb 46: DIY Tube Amp Schematic Power Supply 2 of 2 Tube Audio Amplifier Section. Back to the Main Schematics index page # Gibson Schematics - File Size 45: Gibson_ea_5rvt_emperor. 45 filaments are heated with DC and the amp is dead quiet; quieter than my amp with the 2A3 V4 mesh plate version with the octal base and center tapped filament. Most of these early tube amplifier schematics are usually 1 to 4 pages of information. Input Values for Type 5070Ax211x a =. Later (probably in 1963) aluminium panels were used having JTM 45 and MK II printed on them (implying the first serie of amps I have found, ever since 1982, that tube amps' chokes need to be 20 Ohms or less, to play as high in performance as the tube is able. The later 45C & H2 were truly two channel amps. Please see the substitutes at the top of the page for more details You may use the Sun Audio's 2A3 schematic for use with the 45 tube with only modification of the cathode resistor from 750 ohm to 1. com. 211 45 tube amplifier schematicChamp 5f1 fender amp schematic tube schematics guitar amplifier model layout tweed 6v6 clean tubes super annotated copy voltages 12ax7 Suppression papa tremblant guitar tube amp schematics logique remettre[get 39+] valve amplifier circuit diagram. Schematic also attached Transformer-less 45 tube amplifier with the fewest parts possible. I also like knowing that I have a Jeff Korneff circuit design, as these are known to be one of the finest 45 tube Amps around. One is an unmodified 300B amp, and the other is set up like the picture above, with 6L6's. GA-16T Maestro Viscount, 14W 1×10 BG122 - A video starting with the basics of reading schematics, slanted towards those involving Vacuum Tubes Take your 300b amp and stick a 845 in after the 300b. 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