Here is an interesting web page with transistor circuits that emulate tubes:
Tube emulation with solid state devices
Has anyone built amplifiers with such circuits ? If so, what are your impressions ?
Also, if you have other links to such circuits, please post them here.
Tube emulation with solid state devices
Has anyone built amplifiers with such circuits ? If so, what are your impressions ?
Also, if you have other links to such circuits, please post them here.
I have built and tried most of these guitar FX and while usable, they don't really sound like tubes.
What is their sound ?
Vincent77
and others who have tried those emulators in real life, what were your results with them ?
My interest lies in experiencing the "tube sound". I'm thinking of building and/or designing an amplifier using these circuits instead of real tubes.
There are many advantages to doing that including cost, weight since there is no output transformer, etc..
Since I'm interested in a (HI-FI) amplifier, not a guitar one, I think that those emulators might be enough. Obviously, for guitar amp. the emulator should give the same distortion as a tube in the very non-linear regime.
For a audio amplifier, it only needs to be faithful in the "almost linear" regime.
Vincent77
and others who have tried those emulators in real life, what were your results with them ?
My interest lies in experiencing the "tube sound". I'm thinking of building and/or designing an amplifier using these circuits instead of real tubes.
There are many advantages to doing that including cost, weight since there is no output transformer, etc..
Since I'm interested in a (HI-FI) amplifier, not a guitar one, I think that those emulators might be enough. Obviously, for guitar amp. the emulator should give the same distortion as a tube in the very non-linear regime.
For a audio amplifier, it only needs to be faithful in the "almost linear" regime.
Elvee,
That's interesting, I had the same idea of amplifying the current output of a tube.
Did you build your circuit and if so, how does it sound compared to the original tube or just tubes in general ?
the amp is a mix of both tubes and transistors. I am using a ecc82 as the vas stage then goes to a 2N5551 concertina driving 12ax7 solid state boosted 100x with 4k output transformer
switching power supply for heaters and B+.
The booster currently uses two mosfets to provide the boost. simpler then Elvee's
switching power supply for heaters and B+.
The booster currently uses two mosfets to provide the boost. simpler then Elvee's
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I have a bad habit of doing the schematics last after a project has been tested.
I will start a thread on it after I return from Florida on the 17th.
I need to get my Edcor transformer as all I have is a 70v matching transformer for the output. Bass is cut off at 90hz but highs go past 20khz.
very "Tubey" output at clipping with rounded sines and compression of signal
I will start a thread on it after I return from Florida on the 17th.
I need to get my Edcor transformer as all I have is a 70v matching transformer for the output. Bass is cut off at 90hz but highs go past 20khz.
very "Tubey" output at clipping with rounded sines and compression of signal
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