2. amps-preamps
  3. 163746-135315

Help with noise in ONE speaker

Hi All,

So i finally got around to trying to find the problem with "static" noise in just one speaker.  Its REALLY annoying as its not constant but every second or two it comes and goes.  So i switched the right and left speakers and still the noise in the same speaker.  I got all new interconnects and speaker wire (was doing this anyway) and still, same noise.  Turn teh volume up?  same noise...turn the volume to zero, same noise.  So i lugged a speaker up from the basement and switched it, same noise.  If i switch the ohm connection from 8 to 4 to 2, it gets quieter but still there.  The amp is a McIntosh MC152 and i really dont want to pack that up and ship it for work but my amateur investigation tells me its an amp left channel issue.  Anyone had this happen?  Any ideas?
128x128redclamchowder
redclamchowder's avatar
redclamchowder OP
5 posts
 
ATMASPHERE you are the winner.  So I switched the interconnect at the amp and now it is in the right speaker.  So it looks like a preamp issue.  I wonder if its because i had the update done recently.  What in the preamp would cause this?  Would it be an output jack issue?
redclamchowder's avatar
redclamchowder OP
5 posts
 
Ok so we are off to a good start here and looks like it does it on every input unless i engage EQ Bypass.  So there is an issue in the EQ section.  Its been driving me crazy for so long and I have been too annoyed to sit and focus but you two have helped tremendously!

redclamchowder's avatar
redclamchowder OP
5 posts
 
And to even narrow it down more...its the 125 knob! If i have it at neutral (straight up) there is no static sound but to turn it to the right, more than 1 o’clock, there is the noise...only that knob!  

stereo5's avatar
stereo5
6,385 posts
 
Clean the control. 
atmasphere's avatar
atmasphere
11,794 posts
 
You can clean the control if its a slider from the front. You'll need a particular cleaner- DeOxit in the green and black can (available thru Amazon and ebay, link to product below). Reach the nozzle into the slot at the top of the slider in as far as you can easily go. Use as small a squirt as you can manage and then work the slider back and forth. You might need a second shot. Does that sort it out?https://caig.com/fader-f-series/

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