Polk 5 Jr's

gdphoto
gdphoto Posts: 182
edited June 2014 in Speakers
Hi, I have a pair of Polk 5 jr's. One sounds fine the other sounds higher and lower in volume. I'm guessing the cross over is bad. If I find a replacement XO, is it worth rebuilding?

Thanks! Gary
Hafler DH220 Power amp Recapped
Hafler DH110 Preamp Recapped
Hafler Digital FM Tuner
Virtue Audio M1 Piano CD Player
Technics SL-1210-MK5 with a Rega Exact Cartridge
Polk SDA1c's(Rebuilt XO's by Ben) RDO194 Tweeters
Post edited by gdphoto on
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Comments

  • pitdogg2
    pitdogg2 Posts: 25,660
    edited June 2014
    just rebuild the XO's in there. after 20+ years the caps have dried out.
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  • gdphoto
    gdphoto Posts: 182
    edited June 2014
    How do I know which parts I nee to get.
    Hafler DH220 Power amp Recapped
    Hafler DH110 Preamp Recapped
    Hafler Digital FM Tuner
    Virtue Audio M1 Piano CD Player
    Technics SL-1210-MK5 with a Rega Exact Cartridge
    Polk SDA1c's(Rebuilt XO's by Ben) RDO194 Tweeters
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  • Oldfatdogs
    Oldfatdogs Posts: 1,874
    edited June 2014
    In the vintage speaker section there's a sticky,all non SDA models.

    http://www.polkaudio.com/forums/showthread.php?38755-POLK-AUDIO-Speaker-Wiring-Schematics-amp-More-ALL-MODELS-except-SDA

    Find the model you have,then compare when you open them up.

    Hope this helps

    Dan
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  • Nightfall
    Nightfall Posts: 10,086
    edited June 2014
    Bad caps can cause fluctuating volume?
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
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  • drumminman
    drumminman Posts: 3,396
    edited June 2014
    It could also be poor connection from the binding post to the Xover, or from the Xover to the speakers. You'll need to open them up and have a look. As Old Fat Dogs mentioned, the caps are due for replacement. While you're at it I'd replace the resistors too.

    Modern film caps and non-inductive resistors will make those 5Jr's sound better than they did when they were new.
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills/jantzen inductors, Gimpod's boards, Lg Solen SDA inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR BP's, upgraded IC Cable, Black Hole Damping Sheet strips, interior of cabinets sealed with Loctite Power Grab, AI-1 interface with 1000VA A-L transformer
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  • gdphoto
    gdphoto Posts: 182
    edited June 2014
    Thanks for all of your input!
    Hafler DH220 Power amp Recapped
    Hafler DH110 Preamp Recapped
    Hafler Digital FM Tuner
    Virtue Audio M1 Piano CD Player
    Technics SL-1210-MK5 with a Rega Exact Cartridge
    Polk SDA1c's(Rebuilt XO's by Ben) RDO194 Tweeters
    · Share on FacebookShare on Twitter