Def Tech Problem

[malibu1]

I purchased a set of 800's for use as my surround speakers. They appear to be wired out of phase internal to the speaker box. Has anyone had a brand new speaker wired incorrectly from the factory? I have not opened the speakers up yet to confirm. I think I will just take them back for another set.

Thanks!

 

[GlocksRock]

how did you determine that they were internally wired out of phase?

 

[malibu1]

I have a THX test disc that runs the different sets of speakers. You are just listening to the tone of the speakers and how the "sound" of the speakers is isolated.

My Def Tech 2002TL's in front are good, my BP6's on the sides are good but the 800s sound out of phase. If I swap +/- on one of the 800's then it sounds good.

Guess thats how I determined it....

 

[Seth=L]

Your speakers suck, throw them away.

Just kidding.

Do they both sound this way? Double check your wiring. I have done that by accident before and been certain I had them hooked up right, but found I was wrong.

 

[TLS Guy]

I purchased a set of 800's for use as my surround speakers. They appear to be wired out of phase internal to the speaker box. Has anyone had a brand new speaker wired incorrectly from the factory? I have not opened the speakers up yet to confirm. I think I will just take them back for another set.

Thanks!

Its not wired out of phase. If you have followed my posts you will see that I frequently pointed out that current and voltage are 90 degree out of phase in capacitative and inductive circuits. Voltage ahead in inductive and behind in capacitative.

Now if a couple of drivers require second order low and high pass filters, that generally puts the drivers 180 degrees out of phase at crossover. That can result in a nasty null at crossover. The solution is to reverse polarity to the tweeter.

Now these auto set up programs will wrongly detect an out of phase condition in that circumstance.

 

[Seth=L]

Its not wired out of phase. If you have followed my posts you will see that I frequently pointed out that current and voltage are 90 degree out of phase in capacitative and inductive circuits. Voltage ahead in inductive and behind in capacitative.

Now if a couple of drivers require second order low and high pass filters, that generally puts the drivers 180 degrees out of phase at crossover. That can result in a nasty null at crossover. The solution is to reverse polarity to the tweeter.

Now these auto set up programs will wrongly detect an out of phase condition in that circumstance.