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In Reply to: RE: Help me diagnose REL subwoofer issue. posted by neolith on January 17, 2017 at 19:15:55
The OP said there was no distortion. But I would bet that there is but at a very low frequency, which would be hard to hear clearly. On a scope - bingo!If all settings and connections are equal and it still has that problem - the plate amp is defective. Sounds like a blown CR/transistor on the volume or variable coil rolloff circuit. that wouldn't take the amp out but it would cause distortion and volume level problems. Not that it's going to fix anything - Sorry OP
I would try and run as HIGH a tone as possible and listen for any distortion.
Edits: 01/18/17Follow Ups:
Your comments reminded me that the Rels have both high and low level inputs and separate pots for each. As a test, the OP could hook up the low level RCA's and see if the problem still exists. That would indicate that the pot for the high level is the culprit and perhaps a simple fix.
I married the perfect woman. The downside is everything that goes wrong is my fault.
Interesting??? I didn't know that. I though all RELs used only a low level input. And the two separate controls are weird but could be the issue is that is the case.
Anyway low output means that some minor part of the circuit isn't grounding, aka shorted or burnt out. If it were in the amp section it would just not work. So it has to be in the auto sensing or vol/roll section.
Either way the OP should contact who ever he bought the broken sub from and return it, if possible.
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