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Amplifier hum (1 Viewer)

colinwoods84

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Jan 14, 2015
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Colin Woods
Got a weird slight hum coming from speakers. I had it once before, removed the amplifiers and now its back. Not as loud.


I have 3 samson sx1800 amps that I received from a friend brand new. I was trying to use them to power my mains, surrounds and center channel. From my ascend acoustics cmt- speakers I'm hearing this slight annoying hum. I also have a mrantz sr7007. I don't know what caused this hum to come back so I decided to come here and see if anyone had any ideas.


Much appreciated,


Colin
 

schan1269

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Sounds like a ground loop.

Are any of the sources connected analog(like a Wii, VHS, etc)?

Try disconnecting each source individually(won't matter if they are on or off) to see if it goes away.
 

prochargedls2

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Jan 9, 2015
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Samuel
I just fixed mine. Marantz SR7500. Was humming/buzzing very loud at any volume.


My advise to you is to:


1) Pop that case off and check for any irregularities

2) Look at all of the capacitors, if any are bulged that is probably where your hum is coming from

3) Blow it out with an air compressor.


Also try connecting through digital, and analog to see if it's just one or both.
 

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