chip recomendation for a bass guitar amp (already got a transformer).

facundonu · 25th October 2006, 02:35 AM

hi guys,
i want to build a bass guitar amp, something between 70w and 150w.
i want to keep it simple and cheap, so i'm thinking of a gainclone.
furthermore, i already own a tranformer with a (30v+30v)x4A output.

so, simple question expecting nice aswers.

what chip would you prefer for a bass amp in that range of output power, and able to get power supply from that transformer (rectified and not regulated (around +-40v) )??

thanks a lot!

could it be some bridged pair of lm3876 or lm3886?

edit: i don't mind if the output power is measured in a 4ohm or 8ohm speaker, since i haven't bought it yet and have no preference.

mateo88 · 25th October 2006, 06:55 PM

A pair of parallelled lm3875's would be cheap, simple, and would work well into 4 ohms, but the transformer is really on the small side.

25th October 2006, 02:35 AM	#1
facundonu diyAudio Member Join Date: Apr 2006 Location: buenos aires	chip recomendation for a bass guitar amp (already got a transformer). hi guys, i want to build a bass guitar amp, something between 70w and 150w. i want to keep it simple and cheap, so i'm thinking of a gainclone. furthermore, i already own a tranformer with a (30v+30v)x4A output. so, simple question expecting nice aswers. what chip would you prefer for a bass amp in that range of output power, and able to get power supply from that transformer (rectified and not regulated (around +-40v) )?? thanks a lot! could it be some bridged pair of lm3876 or lm3886? edit: i don't mind if the output power is measured in a 4ohm or 8ohm speaker, since i haven't bought it yet and have no preference. __________________ old fashioned 3 way http://www.diyaudio.com/forums/showt...threadid=81723 small sub http://www.diyaudio.com/forums/showt...threadid=93185

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25th October 2006, 06:55 PM	#2
mateo88 diyAudio Member Join Date: May 2004 Location: Argyle, Texas	A pair of parallelled lm3875's would be cheap, simple, and would work well into 4 ohms, but the transformer is really on the small side.

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