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sam18 17th June 2012 02:47 PM

where to place potentiometer to get volume control
hello there, im trying to build this circuit, its a 300watt mosfet amp but i cant seem to get it to work. also where can i place a pot so i can get volume control?
thanks sam

here is the schematics:
300 Watt MOSFET Real HI-FI Power Amplifier | EEWeb

i would like an urgent reply on this because i really want to build this amp.

sam18 17th June 2012 04:27 PM


AndrewT 17th June 2012 04:44 PM

At the output of the last stage before the Power Amplifier. But the vol pot may need a buffer to drive the intervening cable.

sam18 17th June 2012 04:48 PM

sorry im new to this could you be a little more less technical :/
thanks sam

AndrewT 17th June 2012 05:21 PM

Locate the volume potentiometer in the last stage before the Power Amplifier.

sam18 17th June 2012 05:28 PM

okay thanks, what wattage would you suggest i build for the first stage then? thanks sam

gmphadte 20th June 2012 06:09 AM


DF96 20th June 2012 02:51 PM

"There is not one capacitor in the signal path" says the designer of that amp. Clearly he doesn't regard the usual caps at the base of the feedback network or the Zobel as being "in the signal path". Audio seems to attract more than its fair share of self-delusionists! Fortunately, when used correctly, caps do no harm.

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