2. amps-preamps
  3. 1382387937

Reverse Phase Preamp with HT Bypass

I am considering purchase of reverse/inverted phase preamp. So, here is the situation as I understand it:

- In order to have the preamp operate properly, the phasing of my speakers need to be reversed. They are bi-wired, so the wiring of the positive (red) versus negative (black) speaker wire needs to be reversed coming from the amp on both posts.

- That means instead of red (positive) speaker wire to red (positive) post, it would now be red (positive) speaker wire to black (negative) post ... is that correct?

Issue: The way my system is set up now with pre/pro (AVR with HT and 2-channel capabilities) going into speakers "in phase" ... everything seems to be working properly. If I reverse the phase - in order to accommodate the new preamp reverse phasing - then what happens when control is returned to the AVR pre/pro via HT bypass? At that point the AVR pre/pro output load is "in phase" going into "reverse phase" speakers in the FL/FR channels of a 5.1 configuration. Will that create a phasing issue? If so, then what is a possible workaround? Please help me understand.
strateahed

Showing 3 responses by strateahed

strateahed OP
305 posts
 
Brf, source equipment does not have option to reverse phase anywhere. Also, with exception of DVD/Blu-Ray player, everything will go through preamp - wireless DAC, CDP, and TT.

I am starting to re-think the pre-amp choice and consider an alternative that does not invert phase. Thanks for your input.
strateahed OP
305 posts
 
Brf, I have not experimented with that. There is another situation that comes up. Though 2-channel is my primary listening mode, occasionally I like to put on multichannel SACD. The more I think about it, my second preamp choice makes more sense. Thanks again and happy listening!
strateahed OP
305 posts
 
Sounds like most are confirming mfg comments regarding phase. He basically stated that reversing phase on speakers is necessary to make sure everything works properly with the preamp - in terms of SQ. Then he said don't worry about passive signal with HT bypass engaged ... as this is no big deal for movies or surround sound. Frankly, I did not buy that explanation. That's how the thread ended up here. I'm more comfortable now. Thanks everybody!
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