807 tube amp design software

Subwoofer box design valve amplifier magic eyes circuit diagram electrical engineering vacuum tube electronics projects connection. Audio speaker design calculators, electronic vacuum tubes amp designs. Welcome to my tube amp simulation software page paragraph about tube amp design simulation. The linear 30 runs on about 430 volts whereas the l50 is about 500. I used salvaged transformers purchased well below online prices and 807 tubes which are still reasonably priced. The data sheet specifies vg2 tube amplifier circuit. Audio amplifier vacuum tube electronics projects guitar amp floor plans circuits portraits places tecnologia oleksandr dc circuit, circuit diagram, electronics storage, electronics projects, electronics gadgets, speaker box design, valve amplifier, electronic schematics, ham radio. Inspire sweet 807 singleended design thats handbuilt by dennis had of cary fame. Virtually all 807 tubes have the beam forming plates connected to the cathode inside the envelope and therefore the tubes cannot be used in a grounded grid configuration. This amplifier layout has been carefully designed using a combination of vintage, and high quality components. Advice on constructing an 807 valve guitar amp electronics forum. Tube amp design wikibooks, open books for an open world. I have used it on a number of rf transmitters and modulators and i thought it was only fair if my hifi audio amplifier uses it too.

The 807 is a beam tetrode vacuum tube, widely used in audio and radiofrequency power amplifier applications. For nearly two months worked designing the amp, having in mind to. It thus has three electrodes where two of them called anode and cathode reflects the diode function of the tube according to svwp. The 807, a vacuum tube for the ages full page reload. Tube cad is intended as a guide to understand and design tube audio circuits. I will have to design my own power supply anyway, but i do like its features with dc current for the preamp heater etc. Theres a page on how to use it with the vacuum tube models here. Spreadsheets are simple to program, provide some sophisticated mathematical functions. The valve wizard single ended how to design valve guitar. A 30w tube amp using two 807 power tubes in pushpull arrangement. Yesterday, before posting, i checked with a local pal. Each program is windows based windows 9598ment2000 and comes on cdrom. The 807 proved especially popular with amateur radio operators, as evidenced by this ad from the march 1940 issue of qst, a hamradio magazine.

Solid state, vacuum tube types 5ar4, 5r4ggygyagyb, 5u4ggagb, 5v3a, 5v4gga, 5y3ggagt, 5z3, 6au4gt, 6ax4gtgtagtb, 6ca4. If you want to build a tube amplifier and you dont want to just copy someone elses circuit it might be a good idea to learn how to design it. This the first video of many on design and build of an audio tube amp. Glowka is a graduate of the industrial design department at the academy of fine arts in. But, if you want 300b power with a 45ish dht sound as reported by someone with don allen 45 and 807 amps, contact don allen and chat with him about his 807 amp. All software on this page is compatible with windows 95, 98, me, 2000 and nt4. Singleended 807 tube amplifier i have stated in the past that my mate don makes an amp a month.

The circuit download a pdf schematic of the amp wiring, the driver pcb schematic showing components for this build, and the power supply pcb schematic. The 807 was derived from the 6l6 audio power tube and has some of its quirks. Singleended 807 tube amplifier diy audio projects photo. Stereo tube amplifier 807 singledended triode ultralinear. Williamson described the circuit for his eponymous highfidelity audio amplifier pdf, variations of which used the 807. A single 3500z, just one tube which is a simpler circuit, will run 125w carrier power on am easily. The whole construction is hard wired with one exception of a small hand crafted board for. The output of this small amplifier in which a 6v6gt output pentode is connected as triode is about 4. Designing vacuum tube amplifiers and related topics. Also host the excellent magdemo transformer design software, and a host of useful newsletters on spice modelling. Download a pdf schematic of the amp wiring, the driver pcb schematic showing components for this build, and the power supply pcb schematic. In the summer of 2002 i decided to build a pair of mono block parallel single ended diy tube amps, using the 807 tube. The data sheet specifies vg2 807 amplifier, as i have named it, is one of those emotionally charged music presentations with tears of joy as the reward of this new design.

Today gordon rankins design still beats a lot of se300b amps. Despite their best replication efforts, the consensus among performing and studio musicians remains that there is no substitute for a welldesigned tube amp. There is a computer program that comes with this page to help you. I dont think i have ever actually seen any data on using 807s in ultralinear. Design and build your own tube guitar amp guitarsite. I have a pair of those amps and can relate that the 807 is an excellent audio amp tube. I am glad about the results because thats a very good way to verify my 6dj8 and 6l6gc spice models, like i tell you. Higher powers are obtainable with either very large power valves, or by using multiple valves in parallel, but beyond about 15w it is usual to use. This tube has been described as the valve that won the war, because of its widespread use by the allied forces during wwii. Vacuum preamplifier tube, 12ax7 mullard, rated medium. I recently was reintroduced to the 807 tube by an audiophile buddy here in raleigh.

Load line analysis was used to determine the behavior of this stage. Inspire hifi sweet 807 by dennis had for sale us audio mart. Ltspiceswitchercad iii a nice easy to use simulator which is gaining rapid acceptance. Universal loadline calculator for vacuum tubes vacuum tube. To run an amp and achieve less than 3 db power benefit seems a bit silly, and thats all you could get with four 807s. It uses 4 6lw6 tubes per channel running on 750 volts.

I designed the chassis in auto cad and a cnc machinery did the whole work. This is fine for el34s, but 807s dont like a grid 2 voltage of much above 300 320. Thats a low value and thats the reason why the 807 wouldnt be an ideal valve to use in an ultralinear design. You will therefore appreciate the fact that while all three software programs are serious wellthought out products, they are written expressly for the hobbyist and are easy to use. Diy tubes hiend audio, diy, hifi, stereo, electronics site, for. It has two 6sn7 and two 807 tubes and the power supply uses a 5v4. The original williamson hifi amplifier schematic as published in wireless world. I didnt think that i would have any use for an amplifier that only put out 2 watts. Recently added speakerheadphone switch and headphone jack. This page contains details of software available from this site, to assist with the design of amplifiers and related equipment. Valve amplifier audio amplifier audiophile speaker box design circuit diagram vacuum tube guitar amp. Being a guitarist who shares that opinion, i chose to design a tube amp of my own. Both these amps are in ultralinear which puts the screen grids grid 2s at this same potential.

Vacuum tube software the vtdata software package is a complete vacuum tube manual on your computer. Tube amplifier power supply unit designer electronic circuits. Beautiful, 100% hand built stereo, singledended class a triodeultralinear, all tube power amplifier using 807, 6bz7 and 5u4 tubes. Nov 22, 2015 this the first video of many on design and build of an audio tube amp. The quickest way to get acquainted with the parts and standard layout techniques used in tube amp building is to build an amp kit. Being the classic that it is, there is a lot of literature on the 807. I used a pushpullparallel set of 5b854m tubes, which are basically 807 tubes in a slim bottle with a loctal base.

The datasheet shows that a triode strapped 807 is not expected to produce much more than a watt of audio. The internet continues to make it easier to find books and parts to help you build your own boutique quality guitar amp. A trio of software programs for the intrepid tubephile. Download a pdf schematic of the amp wiring, the driver pcb schematic.

For additional information about designing tube amplifiers, refer to the theory section. Two variable capacitors in a pi configuration with the coil provide tuning and load adjustment. Pcb circuit finished board for fu7 807 tube amplifier use no. Hi, this is my first post and am looking for adviceresources on using 807s and 1625 tubes, plus am posting a cool 1954 schematic below. Assembly manual schematic parts list tubes and applications design simulations.

Oct 20, 2010 the base of the 807 is shielded with a bath salts tin from a crafts store. Single ended class a 6v6 6j5 valve vacuum tube amplifier circuit. Tube amp is an audio effect plugin that applies asymmetric tube triode overdrive usually found in single tube microphone pre amp boxes. Volume control allows the amp to be used as a singlesource integrated producing about 810 watts, so it might be best paired with efficient speakers 90db or greater. To use the 807 as a linear amplifier you will have to have a grid driven amplifier, not grounded grid.

The sound this plugin produces varies from a mild warm overdrive to a fuzzy distortion. Part 1 of a 2part video series in which the circuitry of tube amplifiers is explained by breaking down the circuit of a fender champ amplifier into subunits and explaining the design and. Apr 29, 2011 the stainless steel tube amp is a functioning prototype, but may eventually be put in limited production. This entry was posted in amplifiers, tubes and tagged amplifiers by matthias. Subwoofer box design valve amplifier magic eyes circuit diagram electrical engineering vacuum tube. The physical function of the tube the most common tube type in audio amplifiers regardless if it is in power stages or in pre amplifiers is the socalled triode svwp. Welcome to my vacuum tube audio page, which i dedicate to the reader who seeks an indepth understanding of amplifier design who wants to learn the factors that contribute to audio quality who doesnt buy the myths of the highend marketplace, where old designs enhanced with premium components and dressed up in impressive packages command astronomical prices. There are plenty of good designs out there showing different audio amplifiers using 807. Singleended classa tube amplifier design and construction. Linear conchord amplifier with 807 tubes vintage amp repairs.

By trying out several different sets of operating conditions in the computer i could eliminate hundreds of possibilities without playing with electricity. I use 6sl7 and 6sn7 quite a bit for preamp and phase inverter duty. Tube amp dontcrack audio plugins software downloads. 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. It all started with my decision to use the less known tube 807, a tetrode whose features and sounds i was well aware of, from a specific diy project with one tube per channel wired in triode made by christos spathopoulos. The tetrode connected 807 produces over five watts. Plate voltage is about 505 volts, and screen voltage is 228 volts. How do you find a set of operating conditions that will work with 3 different tube families. The large power transformer and the output transformer are both stancor, as is the small choke.

If the tube to be used is a tetrode, the screen and grid should be tied together to simulate a triode. Don allen 807 5933 single ended w volume pot audio. Tube amplifier power supply unit designer software psu designer ii is designed to help you with the design of simple linear unregulated mains power supplies, as often found in tube amplifiers. This month don has completed an 807 amp based on a schematic designed by matt from the usa and the same as i built a short time back. This is a vintage homebrew mono tube amplifier with separate power supply. The choice of a driver tube is the 12ax7 which is a common small signal tube. Singleended pentode mode, with primaryside feedback, and. The power tube is used in the groundedcathode configuration fig. Final amp for 807 transmitter the radioboard forums. The gentleman i spoke with that turned me on to the 807 amp ranked don allens amps according to his tastes in this order. Design of the driver stage is concerned with voltage amplification as well as linearity in order to provide the output section with a strong and relatively clean signal. At first this design was just the platform to build something bigger on. Dogzilla uses a hextet of venerable 807 s as output valves v5v10.