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My ACab Was Flaming Saturday Night

H

hpttpbass

Nov 7, 2005
3
0
#1
Hey, ok so I've been playing for 10 years and I've never been much of a gearhead although I'm in the constant search for the perfect tone. Anyway Sat night I'm playing the bar where the pretty people go in a downtown strip in Fredrick MD. I'm literally 30 seconds into the first tune when my lead guitarist starts pointing at my amp and screaming "ahhhhh, ahhhhh". I turn around and my cabinet is on fire. It was an ampeg 4x10hlf, I run through an ampeg svt 3-pro and a sans amp bass driver DI. I'm not sure what happend but after we put out the fire I tried my head (running through an ampeg BM2x10) but alas it was no good. Anyone have any idea what might have happened? You think we were drawing too much power from the circuit? I don't get it because bands constantly play there. What do I need to do to avoid this kind of thing in the future? :crying:
Thanks,
hpttpbass
 
#4
i could be wrong , but i don't think 30 seconds is enough time for the Ampeg
to overheat and to cause an actual fire ...

... were the cabinet and head both on fire ? { or just smoking ?}
... where was the actual fire started , at the bottom of the cab , or at
the head ?
... could it have been a lit cigarette , or possibly some other herb ,
that might have fallen onto the floor ?

hopefully no one was hurt ...
 
#7
dougjwray said:
Glad no one was hurt.
Will you have to make this an integral part of your act now? ;)
Click to expand...

Yea he needs to pull a Jimi Hendrix and light his bass on fire while dancing around it high on Acid...That would be sweet or maybe pull a Jaco and do a backflip off of the flaming rig onto his flaming guitar....Not to take away from the seriousness of the issue but i thought i would throw that in. :p
 
#8
Thanks for the responses. No no-one was hurt (well maybe my pride).

No the amp did not catch and flame but it certainly was fried, i.e. I could not use it with my second cab. The top left speaker caught on fire. It burned the speaker (paper) the coil and the grill. They weren't big flames, just smoldering so I put it out with my hands and we carried the cab outside and put it in the van (after it stopped smoking). The club was unimpressed with our light show... but I'm sure we wowed them with our pyrotechnics. :)

It's an enigma wrapped in a puzzle surrounded by mystery.

Does anyone know anything about power conditioners and what they do?

Thanks,
hpttpbass
 
#11
Most of the power--nearly all of it, actually--going into a loudspeaker driver turns into heat instead of acoustic power. If you put too much power into it, the temperature of the voice coil goes up and up, and sometimes, as in your case, reaches high enough to ignite something. Since the moving parts of a loudspeaker driver usually are mostly made of paper, there may be ample fuel for this unintended combustion.

It has nothing to do with power conditioners or how much power you draw from the AC line.
 
#12
crhoton said:
I had an Eden cabinet pull a similar move on me, and I nearly fried my head. We discovered it was a faulty outlet at the club. I bought a little outlet tester to make sure I don't run into that again.
Click to expand...

A faulty outlet won't burn out your cabinet.
 
#14
The interesting question is why did the amp fail?? It doesn't sound as though it was damaged by flames and only one driver was burned so even if it shorted, that leaves 3 more drivers as a load to the amp. It doesn't seem that the amp could have seen too small of a load (unless they use 32 ohm drivers ALL in parallel in which case a shorted speaker WOULD short the amp's output transistors). Bummer any way you look at it. NEVER pleasant to have gear fail mid gig no matter how "flameboyant" ...
 

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