JBL PB10 Subwoofer "makes thumping noise" Questions

...thumping" w. no audio feed My sub is making a "heartbeat" noise even with no audio feed. It is plugged in to a surge protector (I tried two different strips that are working with other components). ...

I had a long term power outage, When the power came back on , the subwoofer immediately started making loud thumping noises. I had to unplug it or turn it off to stop it. It also doesn't seem to be wo

makes large thumping/chirping noise when turned on. Its not even connected to the receiver Since you have said the speakers make this sound when "turned on", I'm going to assume there's some form of ...

makes thumping noise without input from receiver I had the system shut off fow a while and plugged it back in and turned power off. even without the lead from the amp the speaker thumps randomly So no

makes a constant thumping noise. I replaced the fuse, but it makes the same noise. I was wondering if it is blown or if this problem sounds familiar and do you think it's repairable? I figured the sub

...makes the load thumping noise again. it makes the noise whether its hooked up to my receiver or not. what can i do to fix it, or is it useless??? Hiya, could be the power supply or possibly the amp ...

...makes a loud burp noise when it comes on. I have a JBL PB10 subwoofer, and when it comes on, it makes a loud burp noise, and then it's fine after that. If I connect it to the subwoofer output on my ...

thumping noise every 3 or 4 seconds. I had it unplugged for along time and just hooked it back up. It makes the sound regardless of where its plugged in and even if it's not connected to the receiver.

...noise is the speaker just before it dies! If you have been using the sub-woofer at high volume levels then you probably have damaged it. Try testing the sub-woofer using a multimeter(on ohms setting) ...

this to the subs amplifier. The fact that the sub makes noise when you do this, indicates it is probably functional. Your problem is more likely to be in the cable, or the pre-amp supplying the signal