2-box ss power amp ... what's the recommended "split"??

Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

In constructing a 2-box, solid-state power amp, you could:
* put the amp PCBs in one case and have an outboard PS case which sits right behind it and contains the power transformers and the rectifiers & filter caps etc. In this case you need a series of DC supply and earth cables between the two cases ... using 12 awg, say, should provide a neglegible resistance over such a short run.
PROs: AC is entirely contained within the PS case ... there is only DC in the amp case. This should remove any possibility of hum from the amplifiers.
CONs: (possibly!) ... the longer-than-normal DC supply cables going to the amp PCBs could have a negative effect on the sound?
* put the power transformers in their own case but have the rest of the power supply (rectifers, filter caps) in the amp case.
PROs: normal short DC supply cables to the amp PCBs and the magnetic field of the power transformers is excluded from the amp case.
CONs: there is now AC in the amp case.
Can anyone advise which is the better choice ... and why?
Thanks,
Andy

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Topic - 2-box ss power amp ... what's the recommended "split"?? - andyr 16:03:30 03/11/05 (3)

Re: 2-box ss power amp ... what's the recommended "split"?? - reuben 04:18:25 03/12/05 (0)

Re: 2-box ss power amp ... what's the recommended "split"?? - EchoWars 23:04:21 03/11/05 (1)

Thanks, EchoWars ... - andyr 01:37:24 03/12/05 (0)

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