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|21st October 2008, 01:26 AM||#1|
Join Date: Jun 2008
Quad 405-1 Avondale
I have recently acquired an Avondale modded 405 - 1.
MJ15003's and loads of other mods which have been beautifully done.
It hums quite a bit and read that earthing the input RCA's
directly to the chassis instead of just the ground bus between PS caps can silence a humming 405. I also read that relatively old PS caps can also be to blame.
It actually sounds great but the hum is niggling away at me.
Should I try all of the above ?
Can earthing the RCA's in this way cause further probs ?
I have only a CD player with fig 8 mains cable and passive 50 K stepped attenuator so I'm not suffering ground loop effects.
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