hive mind! what fell out of my trace?

jgriffin · #1 12-28-2011, 10:02 PM

Briefly: Moving my (circa early 90s) trace 2x10 recently, something rattled inside. Not good. Reached in though the port and found the thing in the linked photos.

https://plus.google.com/photos/10683...CLLg0oX6-eeXEA

Two questions:
1. What is this?
2. Best way to fix it?

Thanks!
JG

eyeballkid · #2 12-28-2011, 10:05 PM

oh now ya did it!

basscooker · #3 12-28-2011, 10:05 PM

ouch! gee i dunno, but it looks important! could it be some sort of noise filter? my guess.

Jeff Scott · #4 12-28-2011, 10:06 PM

That is an inductor that came off of the crossover! Can you still get high?

T-Bird · #5 12-28-2011, 10:34 PM

Hi.

Yep, an inductor.

When You open the cab and/or remove the cross-over PCB, it should be clear where that came from.

Regards
Sam

will33 · #6 12-28-2011, 11:09 PM

Glue came loose and both leads broke....thing must've taken some hard knocks. Yes, they're right, it's part of the crossover/tweeter filter circuit. Should be a big empty spot on the board where that thing belongs.

jgriffin · #7 12-29-2011, 09:27 AM

Thanks all. So the most obvious next stupid question is: will it damage the cab to play through it ? Should the cross-over be zero'd ?

will33 · #8 12-29-2011, 09:31 AM

If you can't fix it right away, the whole crossover and tweeter should be bypassed, wire the woofers straight up to a jack. Of course, if you're going to open it up to do that, you may as well fix the inductor and thus, fix the cab.

Playing it with broken or missing crossover parts can play hell with some amps and even damage them, depending on how things are wired/what kind of crossover it is.

jgriffin · #9 12-29-2011, 09:37 AM

Thanks again. This thing is going to be a bear to access. It's mounted to the inside of the back wall of the cab.

dmusic148 · #10 12-29-2011, 09:40 AM

It's probably not as bad as you think. You should be able to remove the whole crossover from the cab, then make the repairs and put it back in.

wcriley · #11 12-29-2011, 09:52 AM

Remove one (or both) of the 10" drivers to access the Xover.

jgriffin · #12 12-29-2011, 01:58 PM

This is fixed now. It turned out to be easiest to remove the crossover pcb through the hole for the handle on the side of the cab. I don't think the inductor was ever glued to the board; I think it was only secured by the lead tabs from the pcb, run through the plastic sockets of the inductor. I couldn't easily remove the broken ends from the sockets, so I used the sockets on the other side and jumpered the leads. I also secured the thing with a cable tie.

https://plus.google.com/u/0/photos/1...00629883577105

Thanks all.

BassmanPaul · #13 12-29-2011, 02:48 PM

Some hot melt glue might be appropriate too.