Old Peavey TNT 115 BW blown?

freexjc · #1 09-09-2010, 01:52 PM

I need some help diagnosing a problem that's cropped up recently with my trusty old Peavey TNT 115 BW. When I turn the volume up to 4 or over (w/the pre-gain between 3 and 5) and play lower notes, the speaker is doing some serious rattling. I know next to nothing about speakers, but I did some searching online for common problems w/these Black Widows and ran across this: http://music-electronics-forum.com/t7948/#post63323

So I took the speaker out, looked it over, and it appears to be in amazingly good shape. No holes, tears, or other apparent problems w/the cone. No wires or screws appear to be loose. Nothing rattled or seemed to be loose when I moved the speaker. The foam around the outside of the spider is in really good condition. I took the magnet off and everything looked perfectly clean underneath. It didn't seem to be loose or off-center either. I'm stumped.

Any thoughts or input would be greatly appreciated. Thanks…

MNAirHead · #2 09-09-2010, 01:55 PM

Check the hardware on your cabinet.. I can't tell you the number if times I've bought speakers when I should have bought a screwdriver.

Tim
s

finn74 · #3 09-09-2010, 01:58 PM

Remove magnet again, double over a piece of masking tape and wipe around the voice coil slot. There maybe some dust or grit in there causing the problem.

MNAirHead · #4 09-09-2010, 02:21 PM

look at your ribbon to ensure there are zero blemishes too..you can visibly see a failing coil (most times)

freexjc · #5 09-10-2010, 06:28 AM

Thanks guys... the coil appears to be fine. It looks clean too, but I'll try the tape cleaning trick.

Widdershins · #6 09-10-2010, 07:45 AM

Quote:

Originally Posted by MNAirHead

Check the hardware on your cabinet.. I can't tell you the number if times I've bought speakers when I should have bought a screwdriver.

Tim
s

+1

Play with the grill cover off... does it rattle still?

I had the same amp for years and had this happen to me... it was the crappy velcro not doing its job.

freexjc · #7 09-10-2010, 08:56 AM

Yeah, it still rattles with the cover off.

4-stringB · #8 09-10-2010, 09:00 AM

Make sure that the port isn't chuffing. I think PV didn't have these lower pitches we use now in mind when they built them...I had to modify mine (same cab) for that reason...