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Bass players-Did I wreck my bass amp?
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10-26-2009, 03:50 AM
I've got a big old Peavey bass amp (a TNT 130) and I had a little fumble while turning it on (didn't realize the guitar end was hanging free) and it bzzzt'd and popped a few times . . . now there's a pretty serious rattle, but it's only within a range of 1 1/2 steps centering around the A string . . . if I blew the speaker would it rattle, and would the rattle show up only within such a narrow range?
10-26-2009, 05:47 AM
It could, yes. More likely that it's the speaker rather than the head.
10-26-2009, 12:15 PM
Sounds to me the like voice coil is rubbing against the magnet. Over time the suspension on a large woofer can sag causing this to happen regardless of usage. Try removing the speaker and rotating it 180 degrees in the cabinet, or if the magnet part on the back of the woofer is removable (if it's a Black Widow speaker it is) you can try unbolting it and rotating that instead, but either way you would need to take of the fabric grille and unscrew the woofer from the cabinet.
10-26-2009, 01:02 PM
mikebw wrote: Will definitely try that, thanks. Would also like to know what's in there now so I can make sure whategver I replace it with is at least as sturdy; all the replacement drivers I'm finding on the nets list a total weight of 8 lbs (?)- would think you'd have/want a monster magnet on there. Anyone know if I'm good with any 8-ohm, 15" driver?
10-26-2009, 01:04 PM
Joey Cupcakes wrote:Thanks, that's what I think too-- although I find it wierd that it's in such a narrow range of frequency . . .
10-26-2009, 01:44 PM
Black wrote: While any 8-ohm, 15" driver would "work" specs vary widely and unless you found a very similar replacement the frequency response would be all wrong, and you could end up with a blown speaker in no time. You should investigate what the actual driver is in the cabinet (the speaker part) and then find out what the T/S parameters are (Thiele-Small). From that you can find a good replacement. T/S params are standardized specs that should be documented with any speaker. Probably the most important aspect to look for is what volume (displacement) the driver is designed to operate in, and whether or not the cabinet is vented or sealed.
10-26-2009, 02:50 PM
Stick in a Black Widow 15, then get a hand truck to move it around.
10-26-2009, 03:23 PM
Just bought this to replace a blown Peavey 15"
http://accessories.musiciansfriend.com/p...sku=660087 Pretty pleased with it so far. Got it for $100 during a 20% off sale.
10-26-2009, 06:51 PM
prof wrote: Wish you hadn't told me what you paid-- now I'll be stuck until I can find one at the same price. |
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