6550 tube amp schematic software

Singleended 6550 tube amp schematic with online electronics store, valve amplifier, circuit. This is only one set kit, you need to assembled by yourself. Singleended 6550 tube amp schematic with 12dw7 driver stage. It can do perfect crystal clear cleans and gets a little dirty when you crank the gain up. Just letme introduce you japanese amplifier builder meeting at kanto area please make.

See the marshall amps 2000 page for more official information on the 2000 amps. Circuit diagram, electrical symbols, electrical projects, electrical installation. Oct 29, 2017 bg bench testing a chinese made cayin a100t kt88 amplifier. Enter values in blue and click any calculate button. The amp has big power supply tube diodes which i havent touched. There is a good chance that an amp designed for kt88 6550 will not have a sufficient power supply that. The sooner you learn to read amplifier schematics the sooner youll be able to analyze classic amp circuits and learn how the masters of amp design voiced their amps. The 470 ohm cathode resistor sets bias at a 75ma which is only about 68% of the maximum plate. Power supply schematic kt88 pushpull tube amp amplifier.

A friend of mine needed some repairs on an ampeg v4 with a quad set of 6550s in it. Its easy to switch, but you need to verify that they will fit in the amp you have. The monoblock amplifiers use a linear power supply. Kt88 tube power amplifier class a single ended valve triode amplifier has not same tone with push psu amplifier. Tube bias calculator rob robinettes car and tube amp website. Plate voltage dc voltage measured between plate and cathode. Feb 18, 2017 power supply schematic kt88 pushpull tube amp. Simply put, in my amp, i find the eh kt88 superior to the eh 6550. Based on the 6l6 vacuum tube, the 6550 was designed to have higher output power and better stability. I had been contemplating a from scratch power amp design for some time. The spec sheet shows almost 20w of class a1 output for a single tube, with a plate voltage of 400v and g2 voltage at 225v.

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. It is only with schematic, not point to point drawing. Please practice handwashing and social distancing, and check out our resources for adapting to these times. This amplifier was featured on the february 2004 issue of the highfidelity audio.

Tube amp dontcrack audio plugins software downloads. El346550kt88 single ended amplifier on 28th mar 2018. I considered a number of output tubes including the 300b, sv811, sv572 and parallel 6b4gs. From glassware the publishers of tube audio design software. In these calculations, 5% of the cathode current is assumed to be screen current. But the tubes lkook good and they can of course work. Construction 25w singleended class a tube amp circuit diagram. Design and construction of a pair of pushpull classa, ultralinear mono block tube amplifiers that can be used with several different power vacuum tubes including pp tube amp 12sl7 srpp kt88 pushpull tube amp schematic see more. This was ground breaking because one pair 6550 power tubes could produce the same power as four el34 or 6l6 tubes. Since this is all in the ear of the beholder, ill tell you what i hear from a kt88. If the bud box were just one inch deeper, i would have no reservations recomending this project to other audiophiles.

It is also remarkable how much a highly sensitive speaker can increase the relative volume of a given amp when compared with an insensitive speaker. The output on this amp is probably a little lower, but it certainly doesnt sound like it. Oddblock octal 12sl7 srpp pushpull el34, kt77, 6l6gc, 6550, kt88, kt90 tube amp schematic. They just arent suited to modern tube circuits that use both solidstate rectifiers. The same part number tube from different companies can have the same technical capability but be made physically different. If you have built any of these circuits, we would love to hear from you so send us your comments.

The module doesnt know is if its adjusting the bias on a 6l6, 6550, kt150 or any other tube. My favorite amp is a pushpull 2a3 triode using 6sn7 as an input and driver tube. The tube amp library of information click the link above for tube amp info, schematics, board building information, projects, mods, transformer diagrams, photos, sound clips. Schematic sheet 1, 100w ulab1 amplifier, 1 x 6sn7 input, 2 x 6sn7 driver, and 6 x el34. A 6dj8 ecc88 tube can be used in place of the 6n1p tube with good results. Elegant looking, elegant sounding, it is a tube lovers dream. The 380w psu could suit 100w monoblocs with 4 or 6 x 6550, kt88, kt90, kt120.

The sound this plugin produces varies from a mild warm overdrive to a fuzzy distortion. Somewhere in between the soft, glassy tone of an el34 and the raw, edgy tone of a 6550 lies the kt88. Previously, tubes of this kind commonly used in american versions of the williamson circuit did not fill the demand for a. This is the circuit diagram of 35w tube power amplifier with el34. I am not worried about the tube life as much as i am the transformers. Later, ge and philips produced straight bottle 6550s. Its much easier to analyze an amp circuit by studying its schematic. Tube amp is an audio effect plugin that applies asymmetric tube triode overdrive usually found in single tube microphone pre amp boxes. Oct 11, 2011 the largest difference from the transistor amplifier to the el34 tube amplifier is the bass. Two kits are required for stereo two channel operation. So starting the design somewhere in 1994 i decided to design. I can give just a few cause i dont know all the tubes that are out there. Cathode current milliamps displays approximate plate current after calculation.

He also told me on a previous conversation that if i wanted to run nos 6550 s in my amp to get the 3 hole version and not the solid plate version. For more ampeg v4 information see the ampeg v4 pages. The oddblock series 2 octal is a mono block single channel power amplifier kit operating in pure class a mode with power ranging from 15 to 25 watts. A decade or so later, bass guitar tube amp icon ampeg was using 6550 power tubes in their. A tube amplifier chassis contains lethal high voltage even when unpluggedsometimes over 700 volts ac and 500 volts dc. You will have to provide more information such as type of amp, schematic, power supply amperage, etc. Push pull 6550 monoblocks diy project sarris custom tube. For additional information about designing tube amplifiers, refer to the theory section. I have changed the series resistor at the top, since the last time i posted the schematic. Replace the input tubes 6n9s with russian 6n8s or usa 6sn7gt or similar all four octal tubes can be the same. I use the kt88 in one of my marshalls which is like a close brother to the 6550.

Diy 12sl7 srpp pushpull kt88 tube amp diyaudioprojects. This new amp employs a microcontroller to control every facet of startup, circuit protection, and automatic shutdown by monitoring all voltages, as well as power tube cathode currents, temperature, and, in future projects, input and output from a preamp. Ive found them to have a similar glassiness and upper midrange sparkle to an el34. Mikael abdellah kt88 singleended tube amplifier schematic. Tube v1 is a 6j5 triode, actually one half of a 6sn7, so if you wish to save on. They are designed to operate using a pair of vacuum tubes from the el34 or kt88 tube families with one nos 12sl7 driver tube. I like the thought of using one of shannons board kits to drive my ppp.

This tube looks identical to the eh 6550 except for a change in lettering. For those of you who still have old computers running windows xp 32bit or any other windows 32bit os, i have setup the download availability of my old old standards. A trio of software programs for the intrepid tubephile. This tube amplifier designed in 1953 and worked from 1954 until 1989. It was not that great of an amp and only sounded good turned up loud. Assembly manual schematic parts list tubes and applications design simulations. There are 10 years plus of these amps out there with the same configuration so i am probably just listening to too much internet banter making me worrying about transformers not really being meant for a 6550 amp. Bewitch amplifier a pushpull amp from china based on super tubes 6550c from russia. Welcome to my tube amp simulation software page paragraph about tube amp design simulation. The latest information about the various oddwatt audio sipp tube amplifier projects is available on the oddwatt pushpull tube amplifiers thread in the diy audio projects forum. If your tube isnt listed then pick one with the same max dissipation rate which is shown to the right in the tube list.

Vt22v4 amp schematic 1974 magnavox vt40 amp schematic 1971 ampeg vt40 pre amp schematic 1971 joe piazza vt40 power amp schematic 1971 joe piazza also worth checking out is the blue muse unofficial ampeg page. Funny as for me pre amp distortion can be more muddy, but i would suspect some pre amp circuits can be good, as most marshall vintage type have a great power tube distortion when pushed, i love 6550,s for clean and distorted toness when combined with a good pre amp it can make those 6550 sing real well, you need to try them to see how they do for your application, they have a. Use ohms law to find the minimum value of screengrid stopper. Showing the pete millet 8903b software in use as well as other tests. Had, that when he tested the tube it was bad and had caused a run away plate voltage issue that toasted the self bias circuit. It is an ultra linear pushpull design uses the 6550 power output tube, while the phase splitter and the driver stage uses an ef86, and an ecc83 per channel respectively. Finally, i think that the type of amplifier im keen on building is a williamson variant ul pp with ecc83 pre amp and inverter stage leading to 6sn7 drivers for kt88 output. Peavey amp schematics to assist you with your amplifier repairs and modifications. Singleended 6550 tube amp schematic with online electronics store.

The type of speaker used has an enormous impact on the ultimate sound of the amp, and contributes to the dynamic response and compression for which valve guitar amplifiers are admired. The singleended amplifier circuit uses a 6550 high power tetrode vacuum tube in the output stage. Therefore, the modules bias set point must be configured such that the dissipation limit of the lowestpower tube thats likely to be installed, will not be exceeded. Jun 23, 2009 zakk wylde has always been a 6550 guy. Valve amplifier, radio design, electronic schematics, circuit diagram. The diagram shows the pinout for the 6j5, not the 6sn7. He also makes a jazz amp, which i have, i do not think it will distort at all but it sounds great with my archtop and does not weigh much. If you have not been trained to work with high voltage then have an amp technician service your amp. I enjoyed my time with the trueharmonix 6550 immensely. Can any one direct me to a good simple kt886550 design.

The ecc99 output tube idle at about 17ma and they do require the pearl audio tube coolers for actual cooling, not just tube envelope damping. Power amp and psu schematic with 8x 6550 issue 3 marshall, 1986. Singleendedtriode set amplifier schematic valve amplifier, car audio amplifier. From the load line, the peak anode current is about 150ma. Below is the amp opened up to show the interior viewed from the bottom. Bench test cayin a100t 8 x kt88 tube amplifier youtube. Not so sure about hifi amplifiers, but ive built a few tube guitar amps and have worked on a few as well. Online electronics store valve amplifier circuit diagram hifi audio vacuum tube guitar amp audiophile circuits radios. This amp was originally used by big bands in big venues because its loud and clean. I had been looking for a higher power amplifier design to act as a test bed for trying out el34s, kt88s, etc. Its deep as the internal hell, clear like tuned piano and makes a world of difference to enjoying music. There are hundreds of pages of tube amp information on my library page. Several local loops with negative feedback is used instead of global feedback. Do you have access to the schematic for the driver stage of that amp.

I have read on some forums that the much less expensive russian 6n2pev is. Tech stuff aside, the kt88 is a gorgeous sounding tube. It have to be experienced as a description is far from enough compared to feeling it in your chest. Schematics for the amp and power supply and a brag document can be found on the projects pages of. Amplifiers free delivery possible on eligible purchases. Initially had to answer the question classic push pull or a single ended amp. After many years designing single ended amplifiers i have decided to start a series of test about the push pull amplifiers. It didnt take long for tube amp designers to notice and quickly hifi tube audio amps from heath, dynaco, mcintosh, fisher, scott, and others could be found in living rooms all over america.

Four 6550 high power tetrode vacuum tubes in triode mode and class ab2 pushpull parallel connection forms the output. While not able to produce the rather huge dynamic swings of my solid state monarchy amps are capable of producing, the musical qualities of this amp are truly wonderful. Lets start by looking at the simple standard tube amplification circuit that you will see again and again as you study tube amp schematics. This area shows evidence of the worship of the goddess, aphrodite. This was the accompanying cabinet for the 2001 bass amp. But a more important factor to consider is tube construction. The idea of building a diy audio vacuum tube amplifier based on highquality materials begins in the early 90s. The 6550 became quite popular in american audio amps in 1950s. I guess we can try to replace them with two simple diodes n4004 per each tube.

This is our collection of diy and hifi audio schematics. See more ideas about valve amplifier, vacuum tube and circuit diagram. As a result, kt88s and 6550 s are produce cleaner tones and have low distortion, making it popular amongst bass amplifiers and high end audio applications. According to the factory specs, the 6550 in singleended mode is capable of a fairly good power output. Tube amp schematics index page there are over 3500 tube amp schematics and other types of schematics in the el34world schematic library. The kt88, kt90, and 6550, although not identical, are often interchangeable, dependent on external circuit parameters. The sound produced by a singleended amp is rather unique. Buy yaqin mc50l kt88 6550 x4 pushpull integrated tube amplifier. To view this site, you must enable javascript or upgrade to a javascriptcapable browser. There is also a huge library of effects and solid state schematics. Or anyone got the front end schematic for the cary six pack. Singleended 6550 tube amp schematic with 12dw7 see more this 5 tube stereo amplifier is based on the achievement date of your archetypal backward am radio amplifier design. Jan 19, 2017 12sl7 srpp pushpull el34, kt77, 6l6gc, 6550, kt88, kt90 tube amp schematic stay safe and healthy. Since for power amplification it is usual to use pentodes or beamtetrodes, which produce predominantly odd harmonics, we can expect all.

Diy guitar amp, power supply circuit, valve amplifier, electronic schematics, vacuum. Since in reality the screen current will not quite attain this value we should use the next highest standard resistor, which is 470 ohms for a wirewound. The circuit is interesting but i think it is hard to find the tubes. The kt88 audio tube is considered to be one of the best sounding power tubes for hifi tube audio amplifiers. A survey of four sets of power tubes in two pushpull amps. Yaqin mc50l kt886550x4 pushpull integrated tube amplifier. Please visit my tube amplifier forum heres the place you can go to ask tube amplifier questions. Push pull 6550 monoblocks diy project sarris custom tube amps. Power amp and psu schematic with 8x 6550 issue 2 marshall, 1981. In the mid 1950s tungsol from newark, new jersey unveiled the 6550 power audio tube. If you need that kind of power, get tubes with bigger plate dissipation ratings. By trying out several different sets of operating conditions in the computer i could eliminate hundreds of possibilities without playing with electricity. Tube bias calculator rob robinettes car and tube amp.

If youre interested with classic circuit and classic components, then you should try this circuit. It operates with a plate voltage of 600vdc, a screen voltage of 400vdc, and plate dissipation of 35 watts. This one is a superior class ab pushpull configuration tube amplifier project delivering 80 watt rms per channel. Tube amp schematics, tube amp information, tube amp projects. In general, the kt88 tube has a magical midrange similar to the smaller el34 tube, but with low and high end extremes that reach much further. However, the glowing reports about the sound of the 845 not to mention its seductive looks always kept this tube at the top of my list. As of midjune, 2002, many tube distributors that carry electroharmonix have their kt88 on backorder. The ppp kt88 schematic came from a kit tube amplifier site. Long plates sound wonderful but have the side effect of sensitivity. Details on a practical circuit which utilizes the special characteristics of the new tungsol 6550. Push pull monoblocks diy project sarris custom tube push pull schematic wiring diagram database a single ended amplifier audioxpress ben s uc amp smiths of weston 160w class ab push pull tube amplifier by 12ax7 and kt88 el34 single ended amplifier diytube view topic hk10 stereo kt88 push this is not a common push pull audio design guide new. If you see a problem with any of the schematics, please email me so i can fix the problem. When i was a teenager i had a small 50 watt marshall combo nmv that used 6550.