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Re: Testing A 80
Posted: Wed Mar 29, 2017 10:07 am
by floydfan
One more question, hopefully not stupid. I have a Pioneer deck,CD player, phono 1, A30 and A80 mk2 monoblocks all plugged into a single multiblock could the arrangement of the plugs in the multiblock cause a hum when playing viny.
Re: Testing A 80
Posted: Wed Mar 29, 2017 10:11 am
by Dr Bunsen Honeydew
Nope. Pick up the phono 1 while it is humming and move it around does the hum change, if so it is hum pick up from a transformer somewhere nearby it. One of the many musical and usage disasters of using a rack. If not probably an earth problem with the turntable.
Re: Testing A 80
Posted: Wed Mar 29, 2017 1:09 pm
by floydfan
The A 30 seems to be the culprit. Although I don't have a rack system I have the Phono 1 about six inches above the amp. I will think of a way increase the distance. Funny it didn't hum before as the components are in the same positions.
Re: Testing A 80
Posted: Wed Mar 29, 2017 2:24 pm
by Dr Bunsen Honeydew
Cables have moved.
Re: Testing A 80
Posted: Wed Mar 29, 2017 2:25 pm
by Dr Bunsen Honeydew
Re: Testing A 80
Posted: Wed Mar 29, 2017 2:29 pm
by Classicrock
I found you need 18" approx between NVA phono 2 box and the power supplies to eliminate hum. Especially bad if transformers have to be positioned directly below. Also got buzz in one channel and hum in the other if I stacked transformers together.
Re: Testing A 80
Posted: Thu Mar 30, 2017 7:49 am
by zebbo
Because, Doc, as much as we moan about our other-halves most of us do prefer them to stay around. (And not constantly bitch on about all our gear spread everywhere)!
A necessary evil for a lot of us I'm afraid.
Re: Testing A 80
Posted: Thu Mar 30, 2017 8:53 am
by wallace
I agree with Zebbo,i use a rack out of necessity,not enough space to put gear anywhere else.The only time i had a hum problem was when it was full of Naim kit.Never had even a hint of hum since i swopped it all for NVA.
Re: Testing A 80
Posted: Thu Mar 30, 2017 9:47 am
by CN211276
A rack is of necessity for me as well. Not only because of space constraints, but also a toddler granddaughter.
Re: Testing A 80
Posted: Thu Mar 30, 2017 9:57 am
by Daniel Quinn
Gentlemen, the doc doesn't like racks and he likes to tell everybody frequently . You do not need to justify your use of them , its a harmless personal preference
, I mean its not like your having to justify your decision to vote leave is it .