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  1. #1

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    Question Are Pioneer SX- series receivers common ground?

    Quick question, are Pioneer SX- series receivers common ground?
    I have SX-780 and SX-880 that I'm planning on using for the SDA's.
    I'm pretty sure they are common ground but want to confirm just in case before I blow anything up.
    Thanks

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
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    Hello Mystery,
    In looking at the SX-880 and SX-780 schematics they would be fine with a common ground speaker system.
    Regards, Ken
    Last edited by Kenneth Swauger; 12-07-2012 at 12:18 AM.

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    I'm not aware of any 2 channel receiver or AVR that isn't common ground. Ken, do you know of any that aren't common ground?
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  4. #4

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    Quote Originally Posted by Kenneth Swauger View Post
    Hello Mystery,
    In looking at the SX-880 and SX-780 schematics they would be fine with a common ground speaker system.
    Regards, Ken
    Thanks for confirming Ken.


    Unrelated but I think I just blew woofers on a set of test speakers running 25hz tone in high volume from the SX-880.
    My first blown speakers.
    Good thing they are cheapo speakers.
    Last edited by Mystery; 12-07-2012 at 12:29 AM.

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  5. #5
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    I believe when Polk first introduced the original unpowered SurroundBar (which is a common ground speaker) there was an H-K receiver (pretty upscale model) that wasn't compatible. But, only a few people had problems. That's the only one I can remember.

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    I don't have large enough room to try high power amps on them.
    The SX-880 really sounds nice with SDA-2B's.
    I can't go higher than 1/4 volume in normal listening levels.
    I checked output meter and it was above 1 watt every now and then otherwise less than 1 watt.

    And when I need more low end, 'Loudness' really kicks in so much bass that I feel like having a subwoofer.
    I know it's not good to use 'Loudness' for music but I watched few trailers of new Star Wars and Oblivion movies with that on and the whole floor was shaking.

    SDA for movies... feels like a theater.

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

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