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Post by pedrocols on Dec 29, 2012 5:52:54 GMT -5
The problem I have is that my subwoofer has no phase control and the only way I can make the subwoofer blend good with my paradigm studio 100 is by reversing the polarity on the speakers....Is there a stand alone phase control unit and how much it will affect the sound of the main speakers if I use them with reverse polarity??
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Post by Jean Genie on Dec 29, 2012 10:49:09 GMT -5
How do you reverse the polarity of the speakers?
Does switching the (+) and (-) connections to the sub reverse the polarity?
I'd ask Klinemj, CFElliot, DYohn, Roadrunner or Emo tech.
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Post by deano86 on Dec 29, 2012 10:51:28 GMT -5
As long as all your speakers are hooked up reversed, then there shouldn't be a problem. But, your best bet is to get a new pre/pro or receiver that has Audyssey MultiEQ XT or preferably XT32 to truly blend in your sub with your speakers. Even if your sub had a "phase" switch or even a variable control knob for phase, it most likely is only adjusting phase around one certain frequency... so you could be "dialed" in for part of the subwoofer/bass frequency, but the remainder will still be out of whack.... in other words, phase controls really aren't that effective anyway. If replacing your current pre/pro or receiver is not an option, I would look at getting the separate SVS/Audyssey AS-EQ1 or the Velodyne SMS subwoofer equalizers.... they would be much more effective at truly blending in your sub with your speakers... which is a critical part of your room's response.
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DYohn
Emo VIPs 
Posts: 18,349
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Post by DYohn on Dec 29, 2012 11:15:46 GMT -5
As has been stated, reversing the electrical phase on your mains has the same effect and you need to make sure all your main speakers are reversed. Another way to effect what you hear is by changing the subwoofer position. Move it to different locations in the room or rotate it so it is facing a wall, both of which will alter the acoustic phase of the sound wave at the listening position.
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Post by pedrocols on Dec 29, 2012 13:40:23 GMT -5
As long as all your speakers are hooked up reversed, then there shouldn't be a problem. But, your best bet is to get a new pre/pro or receiver that has Audyssey MultiEQ XT or preferably XT32 to truly blend in your sub with your speakers. Even if your sub had a "phase" switch or even a variable control knob for phase, it most likely is only adjusting phase around one certain frequency... so you could be "dialed" in for part of the subwoofer/bass frequency, but the remainder will still be out of whack.... in other words, phase controls really aren't that effective anyway. If replacing your current pre/pro or receiver is not an option, I would look at getting the separate SVS/Audyssey AS-EQ1 or the Velodyne SMS subwoofer equalizers.... they would be much more effective at truly blending in your sub with your speakers... which is a critical part of your room's response. Iam using a USP-1 which has no phase control but for stereo listening reversing the polarity blends quite well but I am concern if that affects the quality of sound of the main speakers... |
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Post by pedrocols on Dec 29, 2012 13:44:25 GMT -5
How do you reverse the polarity of the speakers? Does switching the (+) and (-) connections to the sub reverse the polarity? I'd ask Klinemj, CFElliot, DYohn, Roadrunner or Emo tech. My subwoofer is a servo contolled subwoofer and when I attempted to reverse the polarity it started making a loud humm so I put it back with the correct polarity. |
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Post by briank on Dec 29, 2012 13:56:04 GMT -5
Where is your sub located in relation to your mains?
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Post by AudioHTIT on Dec 29, 2012 14:09:19 GMT -5
Iam using a USP-1 which has no phase control but for stereo listening reversing the polarity blends quite well but I am concern if that affects the quality of sound of the main speakers... As DYohn said if reversing the polarity of the main speakers brings your sub "in phase" then that's an easy and free solution. As long as you reverse all of your speakers there should be no reduction in sound quality (despite products in the past that adjusted for 'absolute' phase). And yes, reversing the +/- wires at the speaker OR amp will reverse the phase. |
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Post by pedrocols on Dec 29, 2012 14:11:36 GMT -5
Where is your sub located in relation to your mains? The sub is right next to the main speakers on the front tof the listening position. So far I like what I hear so I guess I leave it like that. The bass is nice and tight... |
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