Subwoofer in Phase test? - AVS Forum
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post #1 of 7 Old 01-01-2012, 07:23 PM - Thread Starter
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What kind of test can I perform to see if the phase setting on my O-Audio 500 watt sub amp is in phase with my main speakers?

I have a feeling it isn't in phase but I'm not sure how to get it exact.
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post #2 of 7 Old 01-02-2012, 08:17 AM
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This link was posted on another phase question thread. If you don't have a PC that can be directly connected to your AVR, you can also down load a test tone CD.

http://www.soundandvisionmag.com/blo...y-way?page=0,0


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post #3 of 7 Old 01-02-2012, 11:24 AM
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Alright I tried that test and I had to place my subs in 180 . That added about 7 dB on my spl meter. Im using 2 subs and the spl meter is showing both at 180 as the loudest. Yet my ear tells me when they are at 0 its louder...I must be crazy lol.

Also I thought if one sub was at 180 the other should be at 0? But like I said the spl is showing both at 180 as louder.

No subwoofer I've heard has been able to produce the bass I've experienced in the Corps!

Must..stop...buying...every bluray release...
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post #4 of 7 Old 01-02-2012, 11:56 AM
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Quote:
Originally Posted by pokekevin View Post

Alright I tried that test and I had to place my subs in 180 . That added about 7 dB on my spl meter. Im using 2 subs and the spl meter is showing both at 180 as the loudest. Yet my ear tells me when they are at 0 its louder...I must be crazy lol.


You are not crazy (at least from what I can tell).

You need to get a sound measurement program to be sure what is going on.




Quote:
Originally Posted by pokekevin View Post


Also I thought if one sub was at 180 the other should be at 0? But like I said the spl is showing both at 180 as louder.


If the dual subwoofers are both in the front of the room, I would use the same polarity for both. Front and rear of room subwoofers are problematical, and mesuremetns are required to do that right.

In my room, front and rear of room subwoofers just never worked out. Some frequency ranges were in phase, some were out of phase. I could never get them to sound right not could I get them to meaure right.
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post #5 of 7 Old 01-02-2012, 11:56 AM
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Quote:
Originally Posted by pokekevin View Post

Alright I tried that test and I had to place my subs in 180 . That added about 7 dB on my spl meter. Im using 2 subs and the spl meter is showing both at 180 as the loudest. Yet my ear tells me when they are at 0 its louder...I must be crazy lol.

Also I thought if one sub was at 180 the other should be at 0? But like I said the spl is showing both at 180 as louder.


I think you've been listening to too much of your girl friends karaoke and it may have had a negative effect on your hearing.



Ian

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post #6 of 7 Old 01-02-2012, 12:00 PM
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Quote:
Originally Posted by J_Palmer_Cass View Post


You are not crazy (at least from what I can tell).

You need to get a sound measurement program to be sure what is going on.

If the dual subwoofers are both in the front of the room, I would use the same polarity for both. Front and rear of room subwoofers are problematical, and mesuremetns are required to do that right.

In my room, front and rear of room subwoofers just never worked out. Some frequency ranges were in phase, some were out of phase. I could never get them to sound right not could I get them to meaure right.

Ahh ok phew. My 2 subs are near placed. Left and right of seating position.

No subwoofer I've heard has been able to produce the bass I've experienced in the Corps!

Must..stop...buying...every bluray release...
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post #7 of 7 Old 01-02-2012, 12:00 PM
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Quote:
Originally Posted by mailiang View Post


I think you've been listening to too much of your girl friends karaoke and it may have had a negative effect on your hearing.

Ian

. it was painful......

No subwoofer I've heard has been able to produce the bass I've experienced in the Corps!

Must..stop...buying...every bluray release...
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