[QUOTE=Sjaky223;526250]I bought this amp a while ago and for the biggest part it works perfectly but i recently found out that the built in limiter (which is turned on and off by pushing and pulling the master volume knob) doesn't seem to work.. I will post some links to a manual and schematics of the amp below. In the manual it states that when the limiter is turned on it should limit the overall volume to just below the clipping point (fully undistorted ). Ive tried multiple settings to test this but it doesn't matter if my gain is turned all the way up or just far enough that it clips a little. The Limiter doesn't do anything and the LED which should go on when the limiter is active is no different.
Even though Pulling the master volume knob should turn it off i've tried pushing and pulling but it makes no difference.
Schematics: (the limiter is found on the bottom right of the third page)
Please let me now if you know anything[/QUOTE)
Welcome to the Forum! The Q17 J112 JFET 'Limiter' circuit doesn't look like it will do any serious Anti-Clipping, though the other Limiter JFET Q1 DOES look more traditional. Q1's circuit at least has a Bias Adjust to control it, and looks like it would do more dynamic limiting than that of Q17, which is there to prevent hard output stage clipping. Hard to hear that as a function. Is this a new amp, or used? The bias for setting Q1's limiting character may need to be adjusted.