Plus(+), Minus(-) on different sides?

Acadian
Acadian Posts: 60
edited February 2008 in Basic Hookup/Wiring Questions
I was just installing my new banana plugs and i noticed....behind all of my speakers (Rti8, Rti4, CsiA6) the black plastic thingies are on the left and the red plastic thingies on the right....except for one. The rear left Rti4 has them set the opposite way.

So i have a question...is this normal, does it affect anything? I think (but i might be wrong) that they should all be the same, right?

Does this means that i'm "cross-wired" on this speaker? Should i switch them up?

Thanks!
Rti8
CsiA6
Rti4
PSW505
Yamaha 6050
Post edited by Acadian on
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  • jakelm
    jakelm Posts: 4,081
    edited February 2008
    Is this because the xover plate with the + connections are upside down?
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  • Acadian
    Acadian Posts: 60
    edited February 2008
    jakelm wrote: »
    Is this because the xover plate with the + connections are upside down?

    I'm not sure what you mean.

    I checked and the + sign (engraved on the steal thingie) is below the RED plastic thingies for all of them, except on the left Rti4, for that one it's under the BLACK. Is it possible they screwed up on that one speaker and put the plastic on the wrong side?

    EDIT: When i ran the setup from my AVR, it did give me a warning that one of the rears (probably that one) was out of phase).
    Rti8
    CsiA6
    Rti4
    PSW505
    Yamaha 6050
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  • ShinAce
    ShinAce Posts: 1,194
    edited February 2008
    It is possible. If the receiver tells you that one speaker is out of phase, swap the wires for it only and carry on.
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  • dorokusai
    dorokusai Posts: 25,577
    edited February 2008
    An out of phase loudspeaker won't hurt anything. The binding post issue is probably just a fluke and wasn't picked up by Polk QC.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • Acadian
    Acadian Posts: 60
    edited February 2008
    I guess it won't hurt anything, cause the speaker seems to work fine. I switched the red and black posts and reran the AVR setup....no more "out of phase" message.

    I also just noticed it sets the center channel a bit lower than the fronts....no wonder i couldn't hear too well out of it.

    Cheers!
    Rti8
    CsiA6
    Rti4
    PSW505
    Yamaha 6050
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  • Eric W
    Eric W Posts: 556
    edited February 2008
    You can check the actual polarity of the speaker pretty easily. Take a battery (9 volt or 1.5 volt) and connect its leads to the speaker posts. You'll see the woofer cone either "pop out" or "pull in." Check for consistency.

    P.S. you can't test tweeters this way.

    But it sounds like everything is fixed...
    -Eric
    -Polk Audio
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