Electronics > Projects, Designs, and Technical Stuff
Shielded against 60Hz speaker cable
(1/5) > >>
Hextejas:
I am having a heck of a time trying to eliminate a 60Hz hum from one of my speakers. So, I was wondering if someone makes a 60Hz shielded cable that I could use.
Or could I possibly wire some kind of a filter at the end of the speaker cable that would filter out the 60Hz hum.

thanks
Cliff Matthews:
Look for hum in the gain stages of audio amp and not the speaker cables. Amp outputs are low impedance 4-16 ohm, so it's an unlikely source. Perhaps you have an amp with separate bridges and caps for each channel? (one leaky filter cap maybe?)

It's also possible the biasing on that channel is very close to frying an output transistor, so with no signal input you should have almost no AC or DC offset voltage on that channels output terminals. You'll need to provide a bit more info..  :-//
bson:
I'd go look for a ground loop, bad filter cap in the amplifier/source, or other causes.
soldar:

--- Quote from: Hextejas on March 15, 2019, 11:13:12 pm --- I am having a heck of a time trying to eliminate a 60Hz hum from one of my speakers.
--- End quote ---

Have you tried switching the speakers one for the other and see if the hum stays with the speaker or with the amp channel?
DimitriP:
(tapping impatiently)
Navigation
Message Index
Next page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod