Amp hum
codyc1ark
Posts: 2,532
So, I got home this evening and was welcomed to a humming amp. I'm going to unplug it tonight and let it rest, but I haven't switched anything around lately besides some ICs. I'm concerned that this may be a snowball problem, any ideas guys? If it turns out to be a bad transformer or anything of the sort, it'll give me an excuse to send it off to big sky for a complete overhaul. Thanks in advance for any ideas...
Post edited by codyc1ark on
Comments
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So, I got home this evening and was welcomed to a humming amp.
Maybe it didn't know the words to the songs.>
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>This message has been scanned by the NSA and found to be free of harmful intent.< -
Polkersince85 wrote: »Maybe it didn't know the words to the songs.
I had the same thought!!!!!!If you can't hear a difference, don't waste your money. -
More likely a ground loop.HT SYSTEM-
Sony 850c 4k
Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Polk Sig. 20's
Polk FX500 surrounds
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
Kitchen
Sonos zp90
Grant Fidelity tube dac
B&k 1420
lsi 9's -
is the noise coming out from speakers or the chassis? if you get it from speakers, it can be a ground loop. disconnect all the inputs and see if the noise goes away. many times is some gears that introduce noise to the amp. Ground loops are very common problems. I had the same problem with my cable box that was introducing noise in my amp. I connected the cable box to a filter and the noise went away. as I said before, just disconnect all inputs from your amp and hear if you still have any noise coming out from speakers. the amp should be quiet as a mouse.Make it simple...Make it better!
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Although you did mention you swapped some IC's around recently.Sony 60'' SXRD 1080p
Amp = Carver AV-705THX 5-Channel
Processor = NAD T747
Panasonic BD35 Blu-Ray
Main = SDA-1C Studio with RD0s, spikes, XO rebuild, rings, I/C upgrade
Center=Polk CS10, Surround = Athena Dipoles, Sub= Boston 12HO
Music/Video Streaming = Netgear NEO550
TT = Audio Technica -
is the noise coming out from speakers or the chassis? if you get it from speakers, it can be a ground loop. disconnect all the inputs and see if the noise goes away. many times is some gears that introduce noise to the amp. Ground loops are very common problems. I had the same problem with my cable box that was introducing noise in my amp. I connected the cable box to a filter and the noise went away. as I said before, just disconnect all inputs from your amp and hear if you still have any noise coming out from speakers. the amp should be quiet as a mouse.
Hum is from the chassis not the speakers, like I said this just started, and I've tried tondo some digging but haven't come up with a firm answer. I don't think the new ICs should cause a hum from the amp itself, but I'm sure weirder things have happened. -
Hum is from the chassis not the speakers, like I said this just started, and I've tried tondo some digging but haven't come up with a firm answer. I don't think the new ICs should cause a hum from the amp itself, but I'm sure weirder things have happened.
ok. open cover and see if that noise is coming from cover or transformer. is the transformer an E (block). CAREFULLY push transformer down and see if noise goes away. you can always "isolate" the transformer with rubber washers to chassis.Make it simple...Make it better!
