Topic: my Sub has a humming sound....

[Sterling]

My sub hums. It has for a while now but its pissing me off..I have it connected line level from my amp with a cheap RCA cable. ~ This is probably my problem, will a shielded cable help this? Maybe I'll pick one up on the way home today...

[Daryan]

It's either a grounding problem, or a rfi/emi problem if I were to guess.

[Sterling]

It's either a grounding problem, or a rfi/emi problem if I were to guess.

rfi/emi  Any solution ideas? 

[zowie]

My sub hums. It has for a while now but its pissing me off.

Could be it doesn't know the words.

[eric.B]

My sub hums. It has for a while now but its pissing me off.

Could be it doesn't know the words.

 

[pfife]

My sub hums. It has for a while now but its pissing me off.

Could be it doesn't know the words.

That's really bad.  Terrible.

+T

[Sterling]

My sub hums. It has for a while now but its pissing me off.

Could be it doesn't know the words.

 

[dnsacks]

does the humming subside if you unplug the rca?

does the sub have a 3 prong AC plug?

If the humming subsides when you unplug the rca and the sub has a 3 prong ac plug (and another piece of gear in your playback system also has a 3 prong ac plug), try using a "cheater plug" (3 prong>2 prong adaptor) on the sub's ac plug and see if the humming goes away.  If so, you had a ground loop problem.

[Zee]

My sub hums. It has for a while now but its pissing me off..I have it connected line level from my amp with a cheap RCA cable. ~ This is probably my problem, will a shielded cable help this? Maybe I'll pick one up on the way home today...

Just unplug it from the wall you dont need a sub

[Sterling]

does the humming subside if you unplug the rca?

does the sub have a 3 prong AC plug?

If the humming subsides when you unplug the rca and the sub has a 3 prong ac plug (and another piece of gear in your playback system also has a 3 prong ac plug), try using a "cheater plug" (3 prong>2 prong adaptor) on the sub's ac plug and see if the humming goes away.  If so, you had a ground loop problem.

It does not humm when I unplug the rca...which is a crappy cable...I will try the power cable thing too...and

My sub hums. It has for a while now but its pissing me off..I have it connected line level from my amp with a cheap RCA cable. ~ This is probably my problem, will a shielded cable help this? Maybe I'll pick one up on the way home today...

Just unplug it from the wall you dont need a sub

I like the bass. I have cerwin vega avr632's now (this is my surround system) and the sub really helps deliver the "feel" of the movie...

[scervin]

Could be grounding problem on the amp/receiver side.  Start unplugging devices from the receiver until it goes away. If it doesn't, then it is probably a grounding issue on the receiver.  Try a different cable ass well, but I doubt this is the problem.

sc

[Tim]

what kind of sub?

some of the paradigm's pdr series hum very badly. mine, thankfully, does not

[Sterling]

Ok its a cerwin vega sub (avs 632; 100w powered) and its not just humming...its screaming! I can't even turn up the volume only but a tick and this thing takes the pictures off the walls. I cannot use it at all...I tried unplugging the components from the receiver (HK avr100), directly plugging the sub into the wall, using one of those "cheater plugs", I've also tried using different rca cables too...no luck.

I'm trying to hook it direct line level from my receiver...

[jpschust]

what happens when you plug it directly into the wall with nothing being fed into it?  especially when you turn up the volume on the sub?  anything there?

[pickmando]

Can you use a speaker level to send signal to the subwoofer instead of line level?  Does that make any difference?