Subwoofer problem

barmyllama · 3 Aug 2017 at 14:25

My sub woofer is randomly generating a very loud pop every now and then. Even when there no output from my amp.

Any ideas what it could be?

vila · 3 Aug 2017 at 15:08

My first port of call would be to try a difference subwoofer coaxial cable - check its not touching anything else and not wrapped around a bunch of electrical cables.

hyperseven · 3 Aug 2017 at 15:13

What sub? Plate amp problems?

barmyllama · 3 Aug 2017 at 15:16

Tannoy SFX

What's a plate amp?

Grimley · 3 Aug 2017 at 17:23

I got the same popping noise from my Velodyne sub 10 years ago before the plate amp failed. It was only because I'd left it on standby for a few days. £120 later I'd learned my lesson & now I leave it unplugged when not in use.

hyperseven · 3 Aug 2017 at 18:01

barmyllama said:
Tannoy SFX

What's a plate amp?

It just the subs amp that is usually mounted on a big metal plate screwed to the wooden driver housing.

barmyllama · 3 Aug 2017 at 18:58

I'll try swapping the cable first.

If that doesn't work it looks like it's on the way out.

I'll make sure I unplug my BK Gemini II in my living room from now on.

Thanks guys.

hornetstinger · 3 Aug 2017 at 19:36

Disconnect the cable.
Does it still pop? If so your sub is knackered.
Try another replacement cable.
Does it fix it?
If so the first cable is faulty

I would say from the sounds of it the plate amp is faulty.

vertica · 4 Aug 2017 at 07:11

Does it coincide with anything else in the house turning on/off? Could be a small surge / ripple / back emf on the mains ring from another appliance.

E.g. when my fridge turns on I get a pop from my speakers if they're on the same ring. Fairly sure this killed a channel on my last amp over a few years :mad:

barmyllama · 27 Aug 2017 at 15:47

Seems to be the sub itself.

Ordered and tried a new cable and it still pops randomly.

Thanks for all the replies.