CarlssonPlanet

My son has a pair of OA-116 that I refurbished 8 years ago. The right speaker suddenly quit working today - whole thing, no sound. Of course he swapped right and left on the receiver to make sure it wasn't the receiver. When he removed the top he found a damaged wire (rodent damage? Tool damage?) and repaired that, upon which the speaker started working again - and then stopped again. I've recommended he look at the solder connections on the speaker binding posts that I put in. He's having a hard time getting the bottom off the speaker. (As I recall it has a good bead of sealant, or some tape - I can't remember which.)

Question: What things could make the whole unit go silent like that? (I thought maybe a fuse - but there doesn't appear to be any protection circuit.)

Also, while I was poking around with him I noticed something I had either not noticed, or had forgotten: jumpers in a couple different places - a red one and a blue one on the tweeter base. Has anybody documented how the positions of these change the sound?

Thank you in advance Carlsson community.

Hi! No there is not any fuse in the speaker.. I suggest to apart the speaker starting with the top and mark every wire correctly. then take the speaker so the botton is over the egde of a table and tap carefully on the top (after removing the screws ofc).. then its just start to measure with a multimeter if he cannot see the problem...Should be easy to find.. There can be oxide on the XLR connector in the speaker as well A common problem but easy to fix...

Matts,
Thank you for the reply! Got the speaker apart. Nothing obvious. Will try testing connections. There is a shop here that might be able to help too.