6f6 tube amp schematic software

The lowerpowered 6v6 was better suited for average home use, and became common in the audio output stages of farmhouse tabletop radios, where power pentodes such as the 6f6 had previously been used. Gamma network on input singleended classa tube amplifier design and construction. Following the introduction in july 1936 of the 6l6, the potential of the scaled down version that became the 6v6 was soon realized. Known for their reliability and articulation, the jj 6l6gc is a great option guitar amplifiers and hifi stereo. Ill be adding more brands and schematics in the near future. This project is intended to be built as designed and not piece milled. Almost identical circuit to the el84 amp, except output tube is a single ended 6v6gt. Hoffman amplifiers tube amp forum, single ended el84.

In 6l6, there is an electronic lens that focuses electron beam onto its plate. As this section is responsible for a huge amount of trafic each month ive decided to run a. Understanding vacuum tube amplifier schematics push pull. An amp running 34 watts wont drive 75watt speakers the way larger output tubes will. How to build a custom 3 watt 6f6 tube guitar practice amplifier from. Schematic heaven amp schematics, tube amp schematics, valve. Preamplifier consists of a 6n1p tube and is connected to the audio input.

It wouldnt have to play loud enough for the whole neighbourhood to hear it but it would need to be higher in sound quality than the typical portable or. Welcome to the hoffman amplifiers forum may 15, 2020, 11. If you need a guitar amp schematic for your amp repair that is not listed here, contact us and well try to locate it. The set i am working on is a 10 tube zenith from 193710s153 it calls for a pair of 6f6 output tubes, but it is running a set of nice st 6l6s which look pretty good in there, but i am wondering since i havent been finding much info on these different tubes. Output amplifier consists of a 6p1p output tube and output transformer fig. Check out the tea2025 datasheet for more information on that on the input side, you should use a dual potentiometer. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Free electronics schematic diagrams downloads, electronics cad software, electronics circuit and wiring diagrams, guitar wiring diagrams, tube amplifier schematics, electronics repair manuals, amplifier layout diagrams,pcb software for making printed circuit boards, amplifier design software cad for drawing circuit diagrams free download. Ac wall power from the power cord flows through the onoff ac switch and on to the power transformer shown at bottom center which steps up the wall voltage to 325 volts rms root mean square average ac for the high voltage supply and steps it down to 6. But the main problem is that the 6k6 is rated for 8.

Wes, i built the 5 tube stereo too, about 3 years ago. So a slightly higher max plate voltage than most 6v6 datasheets, slightly lower screen voltage and slightly lower dissipation. Diytube is both shannons small business located in central illinois and a closeknit forum featuring a handful of helpful and prolific members. Understanding vacuum tube amplifier schematics power supplies part 2 duration. A line out jack on an amplifier provides a versatile way to send the amp s output to a recording console, a pa system, or another amplifier. Single tube cw transmitter schematics needed qrz forums. So the amp would need to have the plate voltage dropped and maybe have the cathode resistor replaced to run 6k6s. Sep 22, 2016 if the sweet spot on your amp is with the volume set at 89, try the tacs with your volume control set to 67. May 29, 2010 ive spent the weekend punching and drilling a chassis with the following holes. If you need help, ask the experts at and they will help you out.

How tube guitar amplifiers work diy guitar amp, transformers, valve amplifier, music software. Above, the most complicated tube amp i have ever seen. Some amps put the line out between the pre amp stage and the power section, but the magic tone of some amps come from the phase inverter, power tubes, or output transformer, and such a line out bypasses those. Any good schematics foe a single ended el84 practice amp. It is especially important that this tube, like other powerhandling tubes, should be adequately ventilated. It is capable of large power output with relatively small input voltage. A dual potmeter allows you to connect both left and right channel on one potentiometer. Rca 1933 an25 influence of circuit constants on receiver output noise. How to build a classic british 18w tube guitar amp kit youtube. Even if you only own tube gear and have no ambitions at all of tinkering with any construction projects, youll find the tube manual to contain essential knowledge. From schematic to ordering parts to cab design, it is all here and explained in detail. Audio transformer is the primary part of a tube amplifier which generates an electromagnetic field. Make offer vintage 1956 webcor 14x249 mono pp 6v6 tube amplifier amp mt1755 record player.

The input network the input to the amplifier uses a resistive gamma network. I dropped the fat switch, increased the nfb, included a 2204 style master volume, and installed a tube socket for the rectifier. There are hundreds of pages of tube amp information on my library page. Lone wolf blues company single ended 6l6 circuitry. When testing with the gz34 tube bias was excessive and the value was increased to help reduce the bias. I need more power so im going to bi amp my speakers with another mon0price tube amp. This circuit uses a great deal of negative feedback in order to supposedly get more linear response with cheap output transformers. The 6f6 datasheet im looking at shows it as an 11w tube with max plate voltage of 375v and max screen of 285v. Diy pushpull pp 6v6 6v6gt tube amplifier schematic. Projects, mods, transformer diagrams, photos, sound clips.

Here weve listed our collection of guitar amplifier schematics. The highs are clear and responsive with warm mids and tight solid lows. May 14, 20 the amplifier circuit diagram shows a 2. Its also worth noting that the overdrive tones we love are almost always a combination of preamp, power tube and speaker distortion. Schematic for the amplifier, omitting power supply ii. The implementation is not the best one as op valve grid current can cause over bias of the second triode stage via the high value of rg from pin 7 to ground. About that sakura av200t tube amp youve been yappin about over the phone, its not really pure tube amp. The jj electronic 6l6gc is the classic pentode built with the rugged construction that only jj could deliver. The cost of a tube amplifier mostly consists of the cost of an output transformer and tubes that is usually a factor limiting the sound quality. Chosing a replacement output transformer now lets assume we have a set that has an output transformer with an open winding that must be replaced, and the output tube is a single 6f6. It is a distributed load pushpull output topology called ultralinear back in the day. My advice is to get the schematics and make a map of the physical layout, get all the parts and go to town. Mcintosh amplifiers for home audio and home theater. Tubes are 6sj7 preamp, 6f6 power tube in class a, and 80 rectifier.

Tube amp schematics, tube amp information, tube amp projects. The 12at7 amplifier below is the best that i could do. Metal tube type used in the audio output stage of ac receivers. Here youll find a modest collection of some interesting tube amplifier schematics. The tube amp library of information click the link above for tube amp info, schematics, board building information. Amp schematics, amp schematics, tube amp schematics, valve amp schematics, vacuum tube, audio tube, effect schematics, effect pedal schematics, analog effects, digital effects, guitar amp schematics, bass amp schematics, fender amp schematics, marshall amp schematics, gibson amp schematics, ampeg amp schematics, vox amp schematics, dumble amp schematics, mesa boogie amp schematics, gretsch amp. Oct 17, 2007 i go between 6l6, 6v6, and 6k6 in this amp. Aug 06, 2015 schematic for the amplifier, omitting power supply ii. The original bias resistor value 250 ohm was too low.

Obviously using these parts there was no guarantee on how well the amp would perform but it sounds great. The biggest difference is the rectifier the schematic is drawn with a solid state diode. An ot was used, handling 8 watts and providing impedance matching from a 5k primary to an 8 ohm secondary, which is a common loudspeaker impedance. Schematic heaven amp schematics, tube amp schematics. We are always adding more as we find them so check back often. Fender 64 custom deluxe reverb 20w 1x12 tube guitar combo amp. Dynaco dynakit mark iii tube amplifier schematic and instructions manual for assembly. You will find thousands of tubes or valves with interesting links. I was asked by kegger on the ak tube amp audio forum if i was interested in designing a pcb based amp on the 6l6 output tube family. That is driven by a directcoupled splitload phase inverter, preceded by a single gain stage, all using the common 12au7. Singleended classa tube amplifier design and construction. Space tone 6v6se 5w class a singleended 6v66l6 tube rectification pure.

I dont do mechanical drawings of my projects because they are each unique. Nov, 20 the first amp was assembled and quickly tested. How to build a custom 3 watt 6f6 tube guitar practice amplifier from scratch by dlab. A trio of software programs for the intrepid tubephile. Whether your desires run towards vacuum tubes or solid state, monoblock, stereo or multichannel configurations, mcintosh has your home audio amplifier solution. The frequency response chart was created using a small vb program i created. Mullard, a prominent british maker of vacuum tubes, similarly published a book entitled. Please practice handwashing and social distancing, and check out our resources for adapting to these times. Diytube 6l6 clementine single ended tube amp shannon parks, owner of diytube, has made a number of projects available since 2003 when the diytube st35 clone was made available. Although fender is best known for their 6l6 tube amp designs, they have had huge success with the champ, princeton, and deluxe tube amps that all use 6v6gt output tubes. In an effort to give a little back to the internet harp and tube amp communities, i have decided to offer this free project. Tube audio amplifiers made from tv compactron tubes.

Of course it shows only one of two identical audio channels. A 12watt 6v6 power amp with some negative feedback and a pentode input stage. The output of this small amplifier in which a 6v6gt output pentode is connected as triode is about 4. In singleended tube amps one 6v6 output tube can produce about 5 watts of power. Monoprice pure tube stereo amplifier with bluetooth, line. For a long time i have considered the idea of making small, high quality amplifiers that could be used with portable radios and cd players. Atarashi designed this amplifier for the multichannel sacd application with just fourchannels instead of the normal five.

The excelsior plate voltage is around 370v, 6k6 has a max of 315v 6v6 is 350v. A 50watt ultralinear power amp using 6550 power tubes. This amplifier was a gift to my fatherinlaw for christmas a few years back. One of the amplifier schematics shows a phase splitter known as a seesaw phase splitter not a paraphase as has been suggested. Edcor does make a transformer with screen grid taps at 23%. Electronic circuit projects, electronics projects, radios, valve amplifier, dc circuit, radio.

Thats it for the signal path, now lets examine the amp s power supply shown at the bottom of the schematic. The full size view of the posted schematic can be had by clicking on it, if that helps. This amplifier was originally featured on the january 2004 issue of the highfidelity audio. Using typical operating parameters, the 6v6 power tube, operating in triode mode, has an ideal load impedance of 5k ohm, and generates about 4. The one hiccup was on your schematic it looks like a 39. The project details the build of a singleended 6l6 harp amp. For the tube amplifier circuit i used a cutoff pentode 6sj7 or 6sd7 driving a beam power pentode 6l6 or 5881 in a singleended circuit classa operation. You reach this tube or valve page from a search after clicking the tubes tab or by clicking a tube on a radio model page. By trying out several different sets of operating conditions in the computer i could eliminate hundreds of possibilities without playing with electricity. The schematic shown is the full electronic schematic. Although weaker than many common types 6v6, 6l6, etc.

The amplifier schematic is very similar to the one i used for my very first tube amplifier. Assembly manual schematic parts list tubes and applications design simulations. Single ended class a 6v6 6j5 valve vacuum tube amplifier circuit. It only have that tube buffer, a tube rectifier to juice up those tubes, a budget class ab solid state power amp with cheap chinese made d1047 power outputd1047c is now in the market as replacement, with higher breakdown voltage, the former. You even can look up radio models with a certain tube line up. Apr 19, 2012 diytube 6l6 clementine single ended tube amp shannon parks, owner of diytube, has made a number of projects available since 2003 when the diytube st35 clone was made available. The 6v6 required less heater power and produced less.

The 6y6 output tubes are triode connected for an amazing 1. Tube amplifiers, schematics, parts, triode amplifiers. I realized that a first time builder might like the ability to change things out, maybe try different. Valve technology was predominately found in televisions and radios from the mid to the late 20 th century, before transistor technology advanced and. Circuit of tube amplifier device the output transformer is an important part of the amplifier requiring a thorough parameter. At the same time i had a few voltage amplifiers breadboarded on the tubelab system for testing. Steampunk guitarvalve amplifiermusic softwareaudiophile speakersguitar diy electrical. Oct 29, 20 this little amp is the true junk box bash. All the schematics youll find below are quite large, enough to keep the value of the components readable. Either 6v6 or 6v6gt pentode tubes can be used in the output position. Otl output trasformer less tube amplifiers my consideration on problems of each design. I used a tube socket bias probe to check, this made it easy to see what was going on without much fuss. The objective of this project is to develop an output transformer for singleended tube amplifiers with.

A simple 8watt power amp that uses a 6sh7 input tube and a single 6l6 output. I went through every tube in the tube cad library trying to get a voltage gain of 50 and a tube current of close to 10 ma. Please visit my tube amplifier forum heres the place you can go to ask tube amplifier questions. Attached is the schematic of a pa or subwoofer power amplifier capable of delivering about 650w rms into 4 loads. Tube 50c5 amplifier push pull tube amp schematic tube amp schematics. I want to build a tube power amplifier to see if i can find that good sound i heard. I used the standard 40% screen grid tap, but the 6v6 is supposed to be designed for 23% screen grid taps in ultralinear mode. When touching the inside of an amp youve just switched off, always use one hand and only one. Just fwiw, the older super pros sp200, 210, bc779, and 1004 that everyone loved the audio from used a triode connected 6f6 as the driver and triode connected 6f6s for the outpoots. Rca 1937 an68 a 55watt amplifier using two type 6l6 tubes pushing the. Single ended el84 tube amp information, guitar amp.

First, i like the sound of the 50l6 power tube in my vintage kay amp. If you talk to any guitarist you will undoubtably hear the world valve or tube thrown around. Requires an octal socket and may be mounted in any position. This amp features metal tubes and easy to acquire components for completion of a class a very cool sounding amp. How to build a custom 3 watt 6f6 tube guitar practice. My first transmitters were using a 6aq5 and then a 6v6, 6f6 or 6l6 beam power tetrode tubes usually used in audio power amps as xtal oscillators coupled to the antenna with a variable link winding on the plate tank coil. Mcintosh amplifiers blend eyecatching aesthetics, power and sonic integrity in a way that has been capturing the imagination of music lovers and home theater enthusiasts for decades. Jun 14, 2010 is it worth getting a budget headphone tube amp. The schematic will sometimes give the dc resistance of the windings but that doesnt help us know what impedance the transformer should be. The sound of a valve amp cranked nice and loud is synonymous with rock and guitar heritage.