New western electric we 91e integrated amplifier first look at the final design of the we 91e integrated amplifier, debuting at axpona audio expo north america april 2019. A collection of amplifier specifications from the western electric library. The 150yearold western electric will reintroduce its flagship product to market, the famous 300b electron tube. To maximize productivity, we designed an electrical cad software that requires minimal typing. Symbol and wires in electra are intelligently and automatically. This guitar preamp circuit for over drive before to the power amplifier or headphones. The most famous vintage singleended amplifier is western electric s we 91a, which was used for theatre and public pa application. This is our diy tube amplifier with famous western electric 300b triodes and siemens c3g pentodes here strapped in triode mode. A lot of the 91a circuits out there propose substituting a 6j7 or a 6c6 for the 310a, without any modification to component values. Sophia electric 9101 300b monoblock power amplifier. This site helps you to save the earth from electronic waste. Angela model 91 monoblock tube amplifiers 300b western.
Acousticplan phonomaster western electric 91a western electric 16a western electric 22a western electric 46c western electric 300b western. Western electric vintage amplifiers and tube amps for sale. Western electric 91a amplifier service manual download. Notes single piece phone built with the housing of a traditional we metal subset ringer box. The single signal path capacitor is an audio note jensen silver foil in oil unit.
New production 300b tubes steve hoffman music forums. Many of western electric s original amps are considered vintage models depending on what year they were manufactured by the company. The fis are the most evenhanded 300b amplifiers i have yet come across. The most famous vintage singleended amplifier is western electrics we 91a, which was. The 91e embodies a new proprietary class a2 parallel feed current source topology patent.
It is a parallel single ended, class a amp with zero feedback and. Western electric 300b singleended monoblock tube power amplifiers 310a 274a 5z3. Being engineers ourselves, we wanted to produce electrical designs faster and safer, without manual typing errors. The point is, if you want the sound of a true we tube, only the reissue or original will do, sad to say. See more ideas about tube, vacuum tube and valve amplifier. It is, therefore, important to have the right tools to design the most effective diagrams in this digital era, a schematic drawing software is. Service manuals, schematics, eproms for electrical technicians. We publish this circuit and diagram for free for personal use. Faith, hope, salvation the single ended tube amplifier. They are clean and extended on top, with bass that can go deep while still maintaining a very articulate feel to never ever sound flabby or boomy while possessing an ever so slightly warm. Schematic diagrams offer a fast way of conveying information on a particular project or process with great ease. The 216a triode was one of the first tubes made by western electric. The sophia electric 9101 300b is a singleended power amplifier designed around the 300b directly heated triode tube, operated without negative feedback.
The western electric 300b tubes are a must to realize their full musical potential. Brand new western electric we 91e 300b valve amp hifi pig. Anyone know the true tube compliment, to help put an end to this. The weston electrical instrument company was founded by edward weston. Jan dupont has a big collection of schematics and service manuals for all sorts of audio equipment. The western electric company makes a variety of amplifiers for guitars, speakers, and other electrical equipment for use in sound production and processing. Audio note, we 91a, rega, ayon 12012 i built a 300b single ended triode amplifier based on joe roberts western electric 91a. A minimalist two step amplifier can show up with a lot of advantages against any other tube amplifier design principle. Western electric rosetta stone for triodes nutshell hifi. Charles whitener, western electric ceo, also confirmed the company will unveil a new singleended amplifier called the 91e, as an homage to its famous predecessor the 91a, first introduced in 1936. I am proposing to follow the original 91a schematic exactly, with the exception of a couple of points, and also have a couple of general questions regarding the original schematic. Click here if you want the complete western electric 92a schematic.
Now with the western electric 110a program amplifier, another major step has been. That being the case, for a long time, they have preferred a desirable means of communication and representing projects. The most intriguing circuit in the book is the western electric 92a amplifier on pages. For example, richard told me that the original western electric 91a amplifiers used we 310as as driver tubes that are now both excruciatingly. There is no faster and easier way to create professional looking electrical schematics and wiring diagrams than ez schematics. Used all vintage caps and vintage resistorsalen bradley and ohmite. Watkins diagrams 42 watt radio diagrams 171 wavetek diagrams 62 wayne kerr diagrams 2 webcor diagrams 1 weco diagrams 4 wega diagrams 2 wells gardner diagrams 3 wem diagrams 30 west diagrams westbury diagrams 12 western electric diagrams 97 westinghouse diagrams 8 wien diagrams 2 wiltron diagrams 18 winner. We accept cash, paypaladd 3% and etransfer for used equipment. Western electric announce 300b to reenter production. The singleended 262a driver of the we 92a uses parallelfeed transformer. Hifi stereo amplifier gain regulation with potentiometer.
I found mins tube audio lab searching for modern we91a builds. Back to our topic, the single ended amplifier, based on its most famous incarnation, the western electric 91a model, is still today a wonderful application as tube amp, but there is no real need to perfom the expensive 300b tubes. Archived amplifier specifications western electric. Western electric diagrams, schematics and service manuals download for free.
The amps are modeled after the western electric 91a circuit, with a single gain stage replaced by an easytoget 6sj7 instead of the original we310a tube. I have no copy of the schematic for the 1916 version available at the time of writing. How to develop a defensive plan for your opensource software project. Western electric model 91a 2a3 stereo clone built by tube. Completed on 81808 hi, i just wanted to compliment you on your craftsmanship, i purchased the 300b monos last year that you had built for a customer.
Born in england in 1850, edward weston attended medical school and became a chemist. Weston is most known for his designs and the manufacturing of precision electrical measuring instruments for laboratories and industry. Hello, there seems to be a controversy brewing on what were the original tube compliments on the western electric 91a 91b. These vintage parts came from leeds radio just a few subway stops from my apartment in brooklyn. In addition to completing our new electron tube operation in 2018, we made great progress with a new integrated amplifier, the 91e. Please note, the only tube out there that actually sounds like a real western electric 300b etched or yellow base valve is the reissue we. Home services downloads custom software about contact. And the program is absolutely free to try for 21 days. Western electric 91a clone discussion maxhifi set asylum. Its inputdriver tube is a chinesemade 6sn7 dualtriode, implemented not in the rather common seriesregulated, pushpull srpp mode, but rather, according to richard wugang, in a manner. Spin buttons are available on most dialog boxes to reduce typing.
Ive been doing research off and on regarding western electric 300b amplifiers. I guess the we schematic is as authoritative as you can get. In practice, the rack stayed behind, and was filled with a pair of 86b, 91a. Free western electric diagrams, schematics, service. Western electric 91aclone 300b mono block dealer ad.