OH NO !!!!!!! Whats that burning smell ??????

[weepaul]

Go tback alot of gear thats been in storage for awhile. Plugged it all in, working O.K. ( some hum), so turn it off. Then, a strange couple of pops then a burning smell from the cab !!!!! Hooked up another head and it seems to work fine, but one of the speakers is now distorting . Any ideas ?

[gelfin]

Sounds like have a fried voice coil in the driver thats distorting.

[weepaul]

Sounds bad, big job ?

[icastle]

Voice coil or crossover.

If its the voicecoil the speaker will need reconing or replacing - reconing isn't something you can do cheaply or effectively at home, especially if you've not done it before.

If its the crossover then you might be able to get it fixed easily, or do it yourself if you can handle a soldering iron.

Something that might give you a clue is to remove the front speaker grille(s) and lay the cab on its back.

Gently, push the cone(s) back using the palm of you hand.

They should depress smoothly (no grating noises) and spring back to their original position when you release the pressure - if its blown then it will grate like sandpaper.

If the cones feel ok then release one of the speakers (so you can get inside the cab) and look for burnt components on the crossover circuit board.

hth

[weepaul]

Thanks matey, I'll check it out.

[weepaul]

Yep, one of the speakers was like sandpaper. Patched it up for the mean time, I used foam pieces to brace the speaker. The distortions gone and it all sounds smooth. Any danger doing this ?

[Norris]

I'd be tempted to replace it at the earliest opportunity. It probably won't last very long

[weepaul]

Yeah, looking to source a new speaker. I believe Trace used Celestion speakers, anyone know the model number ?

Cheers,
Paul

[icastle]

If the voice coil has burned then you need to get it replaced - wedging bits of stuff in there to get round it isn't a reliable fix and there's a possibility of damaging your amp if the coil shorts out against the magnet.

[Dad3353]

Whatever made that speaker go duff could well do the same for any other speakers in, potentially, the same condition. I'd not count on the original, new, power handling specification to be a certainty, and treat the whole cab as doubtful until it's had a chance to prove itself. Be prepared for further 'surprises', perhaps..?

[weepaul]

Yes mate, got in touch with Celestion about a suitable replacement.

[weepaul]

Dad 3353, I think one channel in the stereo heads abit duff. One side- no problem,the other side caused the problem. Tried another amp, and no problems (touch wood) so far.

[weepaul]

Checked the speaker again, pressing it in there is a slight scratchiness. Plugged in, it;s distorting lightly, you could get away with it at a gig.
But, stuff like that annoys me and i don't want to run the risk of further damage to the other speakers. I assume over time it will get worse.

[gelfin]

It will get worse and most likely cause a short which will take out your amp.

[weepaul]

Speaker replaced and sounding sweet. If anyone else finds themself in a similar situation, this is a suitable replacement- Celestion [color=#1F497D][font=Arial, sans-serif][size=3]TF1018.[/size][/font][/color]