Power supply for 5 LM1875's - Page 2

24th April 2005, 07:59 AM

#11

nina

diyAudio Member

Join Date: Apr 2005

Location: Earth

Quote:

Originally posted by mangrovejack
Thanks for the reply Nina. I didn't mention the .1 part of the 5.1 system, but that will be taken care of by either an LM3875, LM3886 or (most likely) an OPA549. So it will be fed a signal from the low-pass filter to cover all the low frequencies.

If the chip for .1 channel is not bought yet, I would go for LM3886 as it's much cheaper than the OPA549 (according to digikey). The money we save can be spent for a big cap in order to provide deep bass for the subwoofer channel. Parallel two LM3875 (at 24-0-24 ac) is easy to build as well.

Enjoy~!

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