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In Reply to: RE: Help me diagnose REL subwoofer issue. posted by frogman on January 17, 2017 at 05:23:10
Try switching subs from side to side. Make sure the problem is in the new sub.
REL uses a single RCA low level jack I believe. How are you hooking it up? Do you have two separate channels or are you "slaving" off one??
If it truly is low output than something IS wrong with the amp module. It should get very loud if you crank that volume level control up.
Set up the old sub just as you had it. Get to your normal level. then switch it out for the new sub and see if there is still a difference.
charles
PS stereo subs ARE the way to go!
Follow Ups:
Thanks for your response, Charles. I have experienced the same reduced output from the one sub when using it by itself or as a pair with the other. I use the high level connection to my tube monoblocs using the connection arrangement recommended by REL; they are and have been connected properly. I am surprised by the REL tech's contention that if it works at all it is fine since I have experienced output level issues with power amps in the past; so, I don't understand why the amp in the sub would be immune to similar issues.
High level connection? If that means what I think it does, straight from amplifier output? Don't do that if you can help it. Feed it at preamplifier levels even if you have to use Y connectors and see how they sound.
I will explain why. First you are adding amplifier distortion, when you don't need to. Second, it could be the problem in the one sub is only in the attenuation circuit, which you could potentially bypass.
If all the settings are the same then your plate amp has a problem.
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