butchgo
Emo VIPs 
The Dark Side rules
Posts: 570
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Post by butchgo on Nov 21, 2016 21:07:53 GMT -5
I have a question.
Does it do any harm to have a multi-channel amp where all of the inputs are not being used?
The reason I am asking is my 5 channel amp is only driving my center channel speaker temporarily.
I had to pull all of the wiring for my 4 surrounds due to construction on my theater room.
Any input would be greatly appreciated.
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DYohn
Emo VIPs
Posts: 18,489
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Post by DYohn on Nov 21, 2016 21:19:45 GMT -5
No problem.
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Post by Loop 7 on Nov 21, 2016 22:24:11 GMT -5
I think I read someone in the Lounge remark there may be some very minute, nearly intangible benefit to not running all channels since those in use get the power supply all to themselves.
I don't even know why I'm mentioning this because it was pure conjecture.... I guess I'm bored.
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Post by leonski on Nov 22, 2016 0:21:10 GMT -5
No problem. I had BRIEFLY thought about a 5 channel amp for biamp duties. Channel 1-2 for LEFT speaker and 4-5 for the RIGHT. This nuttiness lasted about 30 seconds. I have seen RCA SHORTING PLUGS which some would use to minimize any potential NOISE. Big discussion about SHORTING V simple covers. forum.audiogon.com/discussions/rca-shorting-plugs-vs-caps-non-shorting |
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Post by Gary Cook on Nov 22, 2016 3:39:02 GMT -5
For movies my XPA-5 runs 3 channels in Zone 1 (C, SR and SL) and, when required, the other 2 channels run stereo for Zone 2. been that way for over a year.
Cheers
Gary
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Post by vneal on Nov 22, 2016 8:12:08 GMT -5
no problemo
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Post by Dan Laufman on Nov 25, 2016 8:29:45 GMT -5
The are no problems leaving a channel "open".
In the old days, some amplifiers we unhappy when their inputs or outputs weren't terminated, but this is not the case with well designed gear.
In preamps, depending on design, there is a case to be made for terminating unused inputs with shorting plugs for optimal noise performance... but that's another conversation!
Cheers,
Big Dan
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