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Inverted Phase Preamplifiers with REL Subwoofers

I understand with use of an inverted phase preamplifier, it is necessary to transpose your speaker wire connections from positive to negative and negative to positive to correct phase.  As REL subwoofers are connected downstream with a Neutrik (high Level) connection at the speaker terminal do you have to reverse the wiring?  With normal phase Yellow and Red wires are connected to the positive terminals and the black wire is grounded on one of the the negative terminals. (3 wires total) The REL also has a phase switch (0 to 180) but is this the solution?  


puffbojie
oddiofyl's avatar
oddiofyl
3,458 posts
 
I flip the polarity switch on my R305... using a c-j pre that inverts
puffbojie OP
110 posts
 
Oddiofyl.  
REL claims that the correct switch position will yield a louder result whether it be a 0 or 180 when in correct phase with the rest of the set up.  Did you find that the sub was louder when you flipped the switch? Did you have the REL before you got the C-J?
mesch
3,402 posts
 
If a sub is 180 degrees out of phase with the main speakers wouldn't there be a suck-out of those bass frequencies where there is a crossover overlap?
testpilot
896 posts
 
If a sub is 180 degrees out of phase with the main speakers wouldn't there be a suck-out of those bass frequencies where there is a crossover overlap?

Out of phase could be beneficial if the sub's woofer is not in the same plane as the main speakers.  On higher end subs, you often see a 180 degree phase switch to help integrate the sub with the mains


atmasphere's avatar
atmasphere
11,594 posts
 
The absolute phase or polarity of the preamp has nothing to do with how the sub is operating- the latter has everything to do with your main amplifier.
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