Receiver says speaker wiring is reversed?

[Tall Dog]

When I run my speaker setup program, it says that 3 of my surround speakers polarity is reversed even though I know it's not. I have a total of 4 identical surround speakers.

The manual does say that depending on the speakers, this can happen sometimes even though the wiring is correct. It's weird though, because all my surround speakers are the same brand and model number.

The sound is ok, it just bugs me that the receiver says there is something mis-wired, even though I know it's not.

Just wondering how many of you guys run into this problem?

[ejcasper]

Its possible that the speaker setup is automatically adjusting the phase of several of the speakers to complete it's auto setup. Have you gone in and checked the settings manually? You can set the speakers to be output in normal or reverse phase and perhaps you could manually turn them to normal. If you can make this adjustment, make sure it sounds good. If not, that is why the auto setup made the corrections. Hope this helps.

[JamesN]

Originally Posted by Tall Dog

When I run my speaker setup program, it says that 3 of my surround speakers polarity is reversed even though I know it's not. I have a total of 4 identical surround speakers.

The manual does say that depending on the speakers, this can happen sometimes even though the wiring is correct. It's weird though, because all my surround speakers are the same brand and model number.

The sound is ok, it just bugs me that the receiver says there is something mis-wired, even though I know it's not.

Just wondering how many of you guys run into this problem?

Are your surrounds dipoles? I believe dipoles are intentionally out of phase to create a more diffuse effect. Of course that doesn;t explain why ther recevier only detected this on 3 out of 4.

[gearyt]

take a battery ( D-cell, etc )
and put the voltage to the terminals of the speaker
if + to red, the cone should push out.

[Tall Dog]

Originally Posted by ejcasper

Its possible that the speaker setup is automatically adjusting the phase of several of the speakers to complete it's auto setup. Have you gone in and checked the settings manually? You can set the speakers to be output in normal or reverse phase and perhaps you could manually turn them to normal. If you can make this adjustment, make sure it sounds good. If not, that is why the auto setup made the corrections. Hope this helps.

I don't remember seeing a way to do this, but i'll double check. Thanks

[Tall Dog]

Originally Posted by JamesN

Are your surrounds dipoles? I believe dipoles are intentionally out of phase to create a more diffuse effect. Of course that doesn;t explain why ther recevier only detected this on 3 out of 4.

How do you tell if they are "Dipoles"? They are Yamaha NS-AP6500S 2-way Bass reflex.

[Tall Dog]

Originally Posted by gearyt

take a battery ( D-cell, etc )
and put the voltage to the terminals of the speaker
if + to red, the cone should push out.

So you're saying it's possible they might be wired backwards internally?

[JamesN]

Originally Posted by Tall Dog

How do you tell if they are "Dipoles"? They are Yamaha NS-AP6500S 2-way Bass reflex.

It doesn't sound like they are dipoles. Dipoles are speakers that have pairs of drivers in the same cabinet that emit sound from opposite directions (kinda like two speaker cabinets glued back to back). The drivers are typically intentionally out of phase with each other, and the intent is to provide a diffuse, non-localized sound field.

[kingofgrills]

Did you double check the wiring both at the speaker and back of the receiver? I just have to ask to start with.

If your receiver allows you to run a phase test on each speaker individually, do it. If a speaker is out of phase the test will properly identify it for you. If the test confirms the auto setup, which it probably will, try reversing the wiring for those affected speakers. Sometimes speaker terminals may get mis-wired internally. Stranger things have happened before.

[crackinhedz]

take a battery ( D-cell, etc )
and put the voltage to the terminals of the speaker
if + to red, the cone should push out.

(I love your expertise...always thinking outside the box )

[jsteinhauer]

My Sony receiver does this to with autocalibration. I don't worry about it. I double checked all levels with SPL meter and made sure they all sounded good.

[guitarist155]

Originally Posted by gearyt

take a battery ( D-cell, etc )
and put the voltage to the terminals of the speaker
if + to red, the cone should push out.

you are really supposed to do this with all speakers you install esp when running wire in wall as it can be hard to fix once everything is closed up. this is how they check in-wall studio monitors, there was a guy on a proaudio forum who had installed his powered monitors sealed up the wall and had them 180 out of phase, he had to open up the wall to fix it