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#244856 - 02/04/09 12:55 PM Center Speaker wiring
Worfzara Offline
aficionado

Registered: 07/25/05
Posts: 709
Loc: London area, Ont, Canada
What happens to the sound of a center speaker if the positive and negitive connections are switched? I know it has something to do with phase, but since it is a center, by listening how do you know it is wired correctly. And does it even matter?

pn
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paul

Axiom M80, VP180, Qs8, EP500
Panasonic PT-AU900
AudioTrak AT-6100
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#244857 - 02/04/09 01:02 PM Re: Center Speaker wiring [Re: Worfzara]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13311
Loc: Iowa
not sure, but I know the DVD's Avia and DVE Essentials has test to make sure all your speakers are in phase. I'm sure it would sound different in some way.
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#244864 - 02/04/09 01:10 PM Re: Center Speaker wiring [Re: Worfzara]
BrenR Offline
connoisseur

Registered: 12/10/03
Posts: 3602
Loc: Winnipeg MB Canada
It will still be 180 degrees out of phase with the mains... and since it shares some program material with them, that would be bad.

Bren R.

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#244883 - 02/04/09 02:28 PM Re: Center Speaker wiring [Re: BrenR]
jakewash Offline
shareholder in the making

Registered: 12/26/03
Posts: 10394
Loc: Calgary, Alberta
Generally, the out of phase speaker lacks bass and sounds funny.
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#244885 - 02/04/09 02:40 PM Re: Center Speaker wiring [Re: jakewash]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13311
Loc: Iowa
it sounds out of phase. \:\)
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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#244887 - 02/04/09 02:53 PM Re: Center Speaker wiring [Re: Worfzara]
MarkSJohnson Offline
shareholder in the making

Registered: 09/27/04
Posts: 10675
Loc: Central NH
Worf:
It does matter.

If you can't check the polarity (wire in-wall, for instance), here's how it's traditionally done:

1- Disconnect one of your mains, and move the other as close to the center as you can.

2- Set both for "Large in your receiver.

3- Play a mono signal through both speakers with a decent amount of bass.

4- Try switching the polarity of the center speakers' wires back and forth to see if one way has more bass. That orientation is the correct polarity.
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#244902 - 02/04/09 03:45 PM Re: Center Speaker wiring [Re: MarkSJohnson]
tomtuttle Offline
axiomite

Registered: 06/20/03
Posts: 8132
Loc: Tacoma
Well, aren't YOU just Mr. Helpful today.
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#244905 - 02/04/09 04:04 PM Re: Center Speaker wiring [Re: tomtuttle]
RickF Offline
axiomite

Registered: 02/26/05
Posts: 5210
Loc: Vero Beach, Florida
I'm impressed!
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#244908 - 02/04/09 04:16 PM Re: Center Speaker wiring [Re: RickF]
Worfzara Offline
aficionado

Registered: 07/25/05
Posts: 709
Loc: London area, Ont, Canada
Thanks Mark,

I was wondering if I could unplug the positive or negitive from the amp and put a volt meter to each wire at the other end. The one that registers juice would be the one plugged in. Would that work too?

paul
_________________________
paul

Axiom M80, VP180, Qs8, EP500
Panasonic PT-AU900
AudioTrak AT-6100
Denon AVR-990

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#244909 - 02/04/09 04:17 PM Re: Center Speaker wiring [Re: RickF]
MarkSJohnson Offline
shareholder in the making

Registered: 09/27/04
Posts: 10675
Loc: Central NH
::While Running Away, Makes Fart Noises with Armpit so as to Not Ruin Reputation::
_________________________
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::

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