• Welcome to ASR. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Phase issue

ttdtechguy

Member
Joined
Aug 30, 2024
Messages
11
Likes
1
Since I moved into this house 8 years ago I have had issues with EVERY hifi. Avr, integrated, whatever. 1 sub, 4 subs. Bass just goes, if I go to the subs and click the phase it will get louder as it does when phase is right way and happy days. Last night watching a film no bass, today I flipped the phase on the 2 front subs listening to music and book, back to its lovely bassful bliss.



What could be causing it? My electrics? I've literally changed every other single piece of equipment but it always comes back. It's driving me insane.



Any ideas gratefully received
 
Strange... The phase (polarity) shouldn't be getting flipped automatically.

You should only get wave cancelation if the subs have different polarities, or if the polarity is different from more main speakers at the crossover point where they're both operating together.
 
Strange... The phase (polarity) shouldn't be getting flipped automatically.

You should only get wave cancelation if the subs have different polarities, or if the polarity is different from more main speakers at the crossover point where they're both operating together.
Yep, but it's always happened here. Never in my old house. 2ch left/right, rel sub on each using the high level speaker connector, so no dsp or xover from the amp. Yesterday pad on both subs was on 0, today I've had to flip them to 180. Give it a week, day, hr I'll be flipping it back. No pattern, very random.
Like I said, only thing that's not been changed is the electric sockets

So weird!
 
Is your only test of phase the louder thing? No measurements? What test material do you use?
 
Is your only test of phase the louder thing? No measurements? What test material do you use?
Don't need testing material my friend, it's very very clear to my ears. Even the wife knows when it's gone and trust me, she hates it all with a passion. I know certain songs, films inside out and backwards, when the bass is gone, it's gone. Go flip the phase & thanks. The other thing that happens is some days the subs just seem like they have no power at all, what should be very good bass in a track just isn't there and the subs are barely moving, all 4 of them, then I can get a drink, come back and they've come to life, punching away like they should. The drivers are moving with such pathetic energy, honestly I've seen nothing like it in any house I've gone to, any system I've installed anywhere else. Just this bloody house

Happens more in the day, night, late night seems better. Again, no pattern or reason, I've tried everything. Just wondered if anyone has had the same.
 
Is phase a real switch on your sub? or a setting in the dsp?
 
Don't need testing material my friend, it's very very clear to my ears. Even the wife knows when it's gone and trust me, she hates it all with a passion. I know certain songs, films inside out and backwards, when the bass is gone, it's gone. Go flip the phase & thanks. The other thing that happens is some days the subs just seem like they have no power at all, what should be very good bass in a track just isn't there and the subs are barely moving, all 4 of them, then I can get a drink, come back and they've come to life, punching away like they should. The drivers are moving with such pathetic energy, honestly I've seen nothing like it in any house I've gone to, any system I've installed anywhere else. Just this bloody house

Happens more in the day, night, late night seems better. Again, no pattern or reason, I've tried everything. Just wondered if anyone has had the same.
Seems more a setup problem then. You may like response better depending on material you're judging with....hard to know. Then again comprehensive measurements could tell the story.
 
I would strongly recommend buying a measurement mic and testing each speaker + subwoofer individually. The phase being randomly flipped is such an unlikely issue, my first thought is actually your wall voltage drooping and amplifier output is falling as a result.
 
Seems more a setup problem then. You may like response better depending on material you're judging with....hard to know. Then again comprehensive measurements could tell the story.
No, not set up, I do this for a living & it's been on to many different processors/power amp, integrated, they can't sell be wrong. Cables, conditioners, everything. What would you measure and where, with what? I'm game to try anything tbh
 
I would strongly recommend buying a measurement mic and testing each speaker + subwoofer individually. The phase being randomly flipped is such an unlikely issue, my first thought is actually your wall voltage drooping and amplifier output is falling as a result.
Yeah I have umik mic. But it just measures what it should. Run a sweep and you'll get a poor response on the curve, flip the phase on sub and you'll see it change. I'll dig up some pics tomorrow. From last time I did this.
 
I would strongly recommend buying a measurement mic and testing each speaker + subwoofer individually. The phase being randomly flipped is such an unlikely issue, my first thought is actually your wall voltage drooping and amplifier output is falling as a result.
Yes, the voltage is what I was wondering and 100% when it gets late at night, rarely happens. Day time is worse.
 
Yes, the voltage is what I was wondering and 100% when it gets late at night, rarely happens. Day time is worse.
Not usually something I even think about, but again some appropriate measurements might shine the light on it....or not.
 
Im at the point I'm going to take it to my parents, plug it in & see what happens.
Tried everything else, cost my thousands and thousands in cables, conditioners, amps, speakers, subs. Mind you, I enjoy trying all the great gear I've had and still have. Need to sell some bits I think
 
Im at the point I'm going to take it to my parents, plug it in & see what happens.
Tried everything else, cost my thousands and thousands in cables, conditioners, amps, speakers, subs. Mind you, I enjoy trying all the great gear I've had and still have. Need to sell some bits I think
Good grief, sorry to hear you went the cables/conditioners route at least. Rooms can be strange and various combinations of speakers/subs can be influential but your setup/integration means more. Maybe just better testing/measurement methods are needed or some testing to see how much your biases are in play....
 
Good grief, sorry to hear you went the cables/conditioners route at least. Rooms can be strange and various combinations of speakers/subs can be influential but your setup/integration means more. Maybe just better testing/measurement methods are needed or some testing to see how much your biases are in play....
Yep appreciate that, but when it works it's fantastic. If it was set up issues it wouldn't be right to start with and then once put right off it was wrong then it should stay right, that's what's bugging me the most. So once set up I don't touch it. I've paid calibrators to come in as well, they do their thing but always goes wrong soon after.
 
Yep appreciate that, but when it works it's fantastic. If it was set up issues it wouldn't be right to start with and then once put right off it was wrong then it should stay right, that's what's bugging me the most. So once set up I don't touch it. I've paid calibrators to come in as well, they do their thing but always goes wrong soon after.
Hard to know without evidence, opinions vary even with mood/time of day and other influences. Maybe particular test material. Just hard to know what you're experiencing or describing.
 
Back
Top Bottom