Phase Problem

[dBLimit]

I am having a problem with all the speakers in my house. Specifically,

all of the front left channel speakers are behaving like they are wired

out of phase. However, they are all connected properly (red to red,

black to black). I believe I am receiving interference from a system

(that is incorrectly wired) that is not in my house, but located close

to where I live. Is this possible? Is there a way to fix something like

this? Or am I out of luck?

Anybody on this board live in the Ypsilanti/Ann Arbor, Michigan

area? Maybe you're being affected too and you can help me out.

[ironwoods]

Hi, Is this a whole house system, or seperate systems throughout?

What indications are leading you to this assumption?

Have you tried purposely wiring out of phase on the suspect channel(s)?.

How many front-left speakers does one have?

1/2 of these questions could be answered by entering in your system(s) profile. []

[efzauner]

What do you mean by "out of phase" . You have to say "out of phase" with respect to something... How do you know it is not the the other channel that is out of phase. What do you hear? Did you try to connect some speakers directly to the amp and listen if you hear the same problem? Try to isolate what you think is the culprit and replace it and see if you where right...

[Mighty Favog]

BTW- I think "NOS Valves" and "Picky" are up your way.

[dBLimit]

It was affecting separate systems throughout the house. All the systems

in the house are correctly wired. I wired them myself and I am very

particular about wiring. The systems have been acting fine for a year

straight. All of a sudden last week I started having this problem. Very

Strange. I double-checked all the systems to make sure.

To see if I was right, I isolated the sound from my left channel

computer speaker, then the right and compared both. The left channel

was not producing bass correctly. It was "pulling" and the right

channel was "pushing". But the computer speakers were wired correctly.

Anyway, when I woke up this morning I played music and it seems the

problem was corrected. Everything sounded in phase. I still don't

understand why I was affected by it. Why should someone else's error

affect me when I'm not even in the same building?

[efzauner]

So, all is ok now! Great. I still am currious why you think the left channel was out. How do you know when a speaker should push and when it should pull when you are listening to music. You can check polarity by connecting a 9 volt battery to the speakers, or your house wiring without the amp connected. When the positive of the battery is connected to the positive speaker terminal, the cone should go out. Dont worry you cannot blow a speaker this way. You are not giving the speaker more than a watt, if that much.

[dBLimit]

I didn't think it was out of phase, it was behaving like it was out

with any signal that was played through it. Dude, I know what out of

phase sounds like. It was acting that way for a week. It was

annoying because there was nothing I could do about it.

[dBLimit]

So, all is ok now! Great. I still am currious

why you think the left channel was out. How do you know when a speaker

should push and when it should pull when you are listening to music.

You can check polarity by connecting a 9 volt battery to the speakers,

or your house wiring without the amp connected. When the positive of

the battery is connected to the positive speaker terminal, the cone

should go out. Dont worry you cannot blow a speaker this way. You

are not giving the speaker more than a watt, if that much.

Wire on of your speakers out of phase with the other. Listen to music

(something you've listened to countless times). Listen again with the

correct wiring. It's not difficult to notice the difference.

When out of phase, you lose bass, midrange, and some high frequency. Bass and midrange are affected the most I think.