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-   -   multiple op's amp (http://www.diyaudio.com/forums/solid-state/58403-multiple-ops-amp.html)

adason 2nd June 2005 06:47 PM

multiple op's amp
 
hi,
I searched and searched, but can not find that link anymore
does anybody have a schematics of an amp built on many paralel op's?
thanks
ed

neutron7 2nd June 2005 07:09 PM

well i am planning a similar thing but it is multiple TPA6120s

http://www.diyaudio.com/forums/showt...threadid=58000

macboy has a circuit there you might start from.

Steven 2nd June 2005 07:17 PM

2 Attachment(s)
Jan Meier designed an amp with multiple opamps in parallel. The special thing about this amp is that the output opamps have their outputs connected via different resistors to the power supply lines to create a kind of semi class A, with multiple breakpoints.
http://headwize.com/projects/showfil...meier3_prj.htm

Steven

adason 2nd June 2005 09:04 PM

Steven,
thanks, thats exactly what I was looking for. I need working schematics to lean on, dont want to reinvent stuff.
That classA operation of op amp is a great thing, I have done it on my riaa preamp with noticeable sonic improvement. Highly recommended.

Neutron7, I have a large supply of good quality op's, so I have to stick to them, thanks for info anyway.

ed


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