Condor Cab Sim IC clipping

[bigfinger]

What's the V30 (russian) speaker emulator?

http://milas.spb.ru/~kmg/index_en.html

There's a lot of people in Russia developing circuits for guitar stompbox, tube amplifier replicas, JFET tube-emulation.
This one features an English translation, but yahoo translate and babelfish and a little bit of intuition make possible to read most of them.
See gtlab.net

ciao

[Brymus]

Hey thanks for that link.
He has some really cool stuff and the soundclips are quite impressive.
Really thanks again,I was looking for spkr sims and his ,plus his spkr saturater look promising.
As does his amp sims,
Bryan

[bigfinger]

I forgot to speak about the cab sim of Daniel Schwartz in the thread "Multicab SIM..my own design cabinet simulator .. it works!! cool!". It's very simple and effective.

Now it works fine!!

I restarted the tests on the condor cab and the simplest solution to avoid clipping is the emitter-follower input stage. The total gain loss is very little and is not a problem. There are no more gain-volume controls. The condor cab usually will drive PC audio interface or PA mixers and all this devices features input gain control.

I would like specify that the clipping is very easy to reach with clean signal. The overdrive signals have a much higher loudness level in respect to the peak level, so the clip is harder to reach. May be useful a peak level indicator (blinking led). Some schematics?

Some links to the "Final Working Project". I have only transformed the input JFET in a simple buffer stage (emitter-follower).

schematics http://www.radici.mi.it/ale/CondorCabMod20100612.jpg
useful project files (eagle-TINA) http://www.radici.mi.it/ale/CondorCabMod20100612.rar
response http://www.radici.mi.it/ale/CondorCabMod20100612Response.pdf

Many thanks to all have given they experience and know-how to help me. Thanks

[Chris S]

Hey Bigfinger,

Just wanted to say thanks for posting a solution to this problem. I've got a heavy gauged acoustic with a high output p90 that was making the Condor Cab Sim clip too. Fortunately for me the line out of the little amp I usually run through doesn't cause the clipping problem so I haven't modified it yet but may do in the future. Just great to know there is a solution. Oh and big thanks to ROG for the original schematic it's friggin great!!!

[BRingoC]

Maybe it's moot at this point, but I was having the same clipping problem with my build.  I ended up removing the last IC stage from the circuit and taking the output from the 10k resistor at the end of the 3rd IC output.  This cut down on a considerable amount of clipping, but it's still creeps up with a les paul, but not too bad.  I'm going to try changing around the FET like the schem above shows.