Sign in to follow this  
Followers 0
bush

Strange sound coming from subwoofer

13 posts in this topic

Hello, dear Neowinians :)

This is my 5.1 system.

Today it started to make some strange sound - you can check the attached audio files.

When I tilt the subwoofer, this grinding sound dissapears but reappears as soon as the subwoofer touches ground.

Also it seems that this sound comes and goes in waves.

Is this a warranty issue or is this my issue?

Thanks!

MIC_2008_09_21_14h40m37s.wav

MIC_2008_09_21_14h44m23s.wav

Share this post


Link to post
Share on other sites

I don't know what the problem might be but you might look for the manual and check if it's still under warranty.

PS

have you put it too loud? :D

Share this post


Link to post
Share on other sites

I'm just guessing here, so I could be completely wrong, but did you check the cable connection? IE when you tilt the subwoofer the cable makes a better connection and when you put it down the connection is rubbish again? What I am trying to explain is, unplug and replug all cables? :)

Share this post


Link to post
Share on other sites

thanks for the help.

no, it's not on loud :)

and ok, i'll check the cables.

Share this post


Link to post
Share on other sites

May be your cables.

I had a woofer that was making a weird noise, like a vibrating wave type noise, and come to find out, it was the amplifier. :)

Share this post


Link to post
Share on other sites

dude, i have such a similar problem. it comes and goes.

my woofer (and partially, the speaker that is next to it) randomly starts this scratching scrabbly sound and if i dont pull it out of the back of the unit in time it BLASTS me with this massive beep... like full volume no matter what volume the system is actually set to. it freaking ****es me off. and sometimes itll work for a while before slipping back into it. arghhh

Share this post


Link to post
Share on other sites

if its a subwoofer with the speaker diaphragm (the wobbling bit) facing down or backwards, a bit of paper or plastic leaning against it would make a buzzing sound as it vibrates. Happened to me a while ago.

Share this post


Link to post
Share on other sites

My subwoofer is connected to my amplifier via the LFE channel, it needs a coaxial cable with good shielding to operate properly.

Before I used a "normal" RCA cable, it crackled all the time.

Share this post


Link to post
Share on other sites

its possible its a grounding problem

make sure the amp is plugged into the same wall socket as your pc - on an extension or multiway extension is fine.

Share this post


Link to post
Share on other sites
My subwoofer is connected to my amplifier via the LFE channel, it needs a coaxial cable with good shielding to operate properly.

Before I used a "normal" RCA cable, it crackled all the time.

Little off topic maybe, and I am sorry for that, but you do know that the LFE channel is an analog signal right? I mean no need for coaxial cables. :)

Share this post


Link to post
Share on other sites

how very wrong you may be.

if the sub is active (has its own amp) then the signal has to get to it in the 50mV range. at this level noise is very prominent, and as it almost definately not professional hardware, it will not be running off a balanced input, meaning that the noise will be a problem... sheilded cable is one way to cancel out the noise...

:)

Share this post


Link to post
Share on other sites

All I was trying to explain with my previous post is that the LFE channel itself is analog, so for the best results you would need an analog shielded cable, not a coaxial cable with the wrong impedance value. A cable like this for instance: Profigold. (This is not the best cable per se, just a reference). As you can see, in fact this cable is nothing more than a mono analog shielded cable. Otherwise look it up at dolby or wiki, and you'll see I'm correct that the linkage between your amp and your active sub is analog. (And that was my whole point, I never said you didn't need good shielding...)

I am not gonna respond to this anymore, seeing we are going way off topic with cable clutter.

Speaking of this topic, did you check your cables TS? Haven't heard from you if you resolved it or not, kinda curious now. :)

Share this post


Link to post
Share on other sites

Sorry, i was away.

I reconnected the cables and since then there has not been any annoying noises. except maybe once, but quiet and short. All the cables from 5 speakers go to subwoofer. I reconnected the subwoofer ends and now it seems to be working fine :)

Thanks for advices, guys!

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0

  • Recently Browsing   0 members

    No registered users viewing this page.