2. speakers
  3. 192004-173740

Faint buzz in speakers

There is a very faint buzz coming from speakers with amp on, but with no music stream playing. Can only be heard with ear right up to drivers. No buzz with amp off or muted. Decent amp & cabling. Is this faint buzz likely still there under music when it’s playing? Numerous noise reduction devices deployed including dedicated circuit, robust grounding, balanced power transformer, various filters. Thoughts?

jmfinney

Showing 2 responses by westcoastaudiophile

westcoastaudiophile
407 posts
 

@jmfinney I had exactly the same issue! After replacing US brand pre+amp with Accuphase C2420+AD2820 + P4500/A48, such noise disappeared! 

westcoastaudiophile
407 posts
 

"simply make sure all lights with dimmers are turned off while listening”

"I noticed that sometimes it's a light rheostat (sorry, dimmer switch) making noise in the circuit. However, it's usually a cheap charger that is the culprit in the circuit. "

- better amp designs are immune to AC power harmonics, introduced by fast switching currents. so far I found Accuphase is the best! 

 

"it turned out to be proximity to a router. "

- I had similar issues before changing pre/amp to Accuphase.. to identify RF noise immunity issues, just touch/move arm to diff components and cables, around amp/pre/turntable/CD etc at max loudness (TT/CD/etc idle).

 

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