lsi 15 tweeter not working

slammerag03
slammerag03 Posts: 11
edited February 2010 in Troubleshooting
i recently purchased lsi15 on ebay. when i received them both bases were broken by ups, otherwise they were mint. when i hooked them up, the tweeters didnt work on either speaker. i hooked the leads directly to the tweeter with no bass and a low volume level and they worked. is this a crossover problem? does it seem odd that both did not work?
My rig: LSI 15 fronts, LSI C center, LSI 7 rear, PSW1000 w/ elemental design amp
Post edited by slammerag03 on
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  • Face
    Face Posts: 14,340
    edited February 2010
    Pull the crossover and look for any obvious damage. It's attached to the back of the binding post cup.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • slammerag03
    slammerag03 Posts: 11
    edited February 2010
    i did not see any obvious damage. im trying to get a price for the x-over and have ups pay but polk is dealing with the blizzard.
    My rig: LSI 15 fronts, LSI C center, LSI 7 rear, PSW1000 w/ elemental design amp
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  • Vette C6.r
    Vette C6.r Posts: 1,560
    edited February 2010
    are the gold jumpers connected. i bet that they were using the lsi's bi-amped. other wise i would think the XO is smoked.
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  • slammerag03
    slammerag03 Posts: 11
    edited February 2010
    yes they were in place. can the x-overs be damaged by the speakers being dropped?
    My rig: LSI 15 fronts, LSI C center, LSI 7 rear, PSW1000 w/ elemental design amp
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  • Vette C6.r
    Vette C6.r Posts: 1,560
    edited February 2010
    not a XO expert but i highly doubt that. they are pretty well contained inside the speaker. i would still take a look. did the seller state they were working prior to shipping??

    i had a crazy party and smoked ( literally ) the XO from too much volume for too long. luckly the place i bought them from replaced them for me ( lesson learned )

    make sure the binding posts are screwed tight to hold the jumpers.
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  • slammerag03
    slammerag03 Posts: 11
    edited February 2010
    anybody have any idea what the tweeters cost? im going to get all i can out of ups. the previous owner said they worked fine.
    My rig: LSI 15 fronts, LSI C center, LSI 7 rear, PSW1000 w/ elemental design amp
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  • Vette C6.r
    Vette C6.r Posts: 1,560
    edited February 2010
    u said that they worked - i wouldn't replace them until you check the XO.
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  • slammerag03
    slammerag03 Posts: 11
    edited February 2010
    is there any way to test the crossover? i have a fluke multi-meter and a decent electrical understanding
    My rig: LSI 15 fronts, LSI C center, LSI 7 rear, PSW1000 w/ elemental design amp
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  • Vette C6.r
    Vette C6.r Posts: 1,560
    edited February 2010
    can't help you on that.

    BTW welcome to Club Polk
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  • F1nut
    F1nut Posts: 50,554
    edited February 2010
    can the x-overs be damaged by the speakers being dropped?

    Absolutely. Check for cracked boards, loose/broken solder joints. Also check for loose connections at the board, binding posts and the tweeters/drivers.

    That said, what you should really do is have UPS total the speakers and get new ones.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • kcoc321
    kcoc321 Posts: 1,788
    edited February 2010
    Polk CS can tell you..."I Think" they are around $70ea, but I am not sure.
    slammerag03 wrote: »
    anybody have any idea what the tweeters cost? im going to get all i can out of ups. the previous owner said they worked fine.
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  • McLoki
    McLoki Posts: 5,231
    edited February 2010
    be sure and mention you are a club polk member for a slight discount.

    If the tweeters work though - why are you planning to replace them?

    Did you pull the crossover and does everything look good there? Snap a few pics of what the crossovers look like and we will try and give you an idea of what could be the problem.

    Michael
    Mains.............Polk LSi15 (Cherry)
    Center............Polk LSiC (Crossover upgraded)
    Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
    Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
    Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
    Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
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  • slammerag03
    slammerag03 Posts: 11
    edited February 2010
    i tested continuity across the resistors and 1 was bad in each crossover. when i jumped across the bad res. the tweeter worked.
    the speakers were insured for way less than replacement value so i am limited to what i can get from ups. unfortunately while disconnecting the leads i broke a spade on the tweeter.
    My rig: LSI 15 fronts, LSI C center, LSI 7 rear, PSW1000 w/ elemental design amp
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  • F1nut
    F1nut Posts: 50,554
    edited February 2010
    That high frequency circuit resistor is a known issue. I'd bet they were bad before shipping.

    Why under insured? Were they in the factory cartons?
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • Face
    Face Posts: 14,340
    edited February 2010
    Here's what you need, two of these: http://www.parts-express.com/pe/pshowdetl.cfm?Partnumber=005-2

    They'll also be an upgrade to stock.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • slammerag03
    slammerag03 Posts: 11
    edited February 2010
    i replaced the 5ohm reisitors and both speakers work great. thanks for the help
    My rig: LSI 15 fronts, LSI C center, LSI 7 rear, PSW1000 w/ elemental design amp
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