Lsi15 internal crossover blew

foxyss
foxyss Posts: 5
edited April 2008 in Speakers
It took me forever to figure out why I wasn't getting the tweeter to work with my Lsi15. I checked all the connections, the amps, the cables... Hooked up my Rti10's that I have for Rears and the tweets work fine. I unscrewed the tweet on the 15 and hooked up the cables directly to it and it works fine. :rolleyes: I also checked the binding post and unscrewed it to make sure everything was still connected properly- no problems there. The wierdest thing is that both tweeters went out at the same time last night on both of my 15's. I hooked them back up today and now one of them works. :confused:

So basically my question is, is it possible to order new crossovers for the Lsi's? Also, does polk have local service centers? (I live in Seattle)


I find it wierd that the crossover would be the first thing to go. I wasn't even cranking them that hard. Anyone ever had this problem?
Post edited by foxyss on
· Share on FacebookShare on Twitter

Comments

  • Dennis Gardner
    Dennis Gardner Posts: 4,861
    edited April 2008
    Sounds like a loose connection/solder joint, since after messing with the wiring, one side now works. You obviously aren't afraid to explore, so I would look into all connections carefully before laying out $$$ for parts.

    Polk will ask for return of parts for repair if under warranty.
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,809
    edited April 2008
    The wierdest thing is that both tweeters went out at the same time last night on both of my 15's. I hooked them back up today and now one of them works.

    I doubt the problem is your crossovers. More than likely, your AVR clipped and took out the tweeters. Why one works now, I'm not sure. Anyway, swap the working tweeter for the non-working one. If the tweeter works, you know one have one bad tweeter and not a crossover problem.
    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

    · Share on FacebookShare on Twitter
  • SlowcarIX
    SlowcarIX Posts: 887
    edited April 2008
    you got one of these at home?

    175.jpg
    my 7.(1x4) HT setup
    TV - Mitsubishi WD-65734
    AVP / Amp - Onkyo PR-SC885P / D-Sonic 2500-7
    Front - Emerald Physics CS2
    Center - JTR Triple 12LF
    Surround L/R / Back - Polk RTi4 / Polk FXi A4
    Sub - 4 X Hsu ULS15 playing nearfield
    DVD / CDP - Sony PS3/40GB / Sony SCD-XA9000ES
    Belkin PURE AV PF60 / UPS
    Buttkicker

    http://www.polkaudio.com/forums/showthread.php?t=60612
    · Share on FacebookShare on Twitter
  • foxyss
    foxyss Posts: 5
    edited April 2008
    SlowcarIX wrote: »
    you got one of these at home?

    175.jpg

    Yeah, I have one. What do you suggest?


    I know the tweeters are good. I looks like all the solder joints are good as well. :confused:
    · Share on FacebookShare on Twitter
  • ben62670
    ben62670 Posts: 15,969
    edited April 2008
    Test across the speaker terminals for resistance.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
    · Share on FacebookShare on Twitter
  • unc2701
    unc2701 Posts: 3,587
    edited April 2008
    foxyss wrote: »
    I unscrewed the tweet on the 15 and hooked up the cables directly to it and it works fine. :rolleyes:

    Don't do that again. Full range signals will kill most tweeters VERY quickly.
    Gallo Ref 3.1 : Bryston 4b SST : Musical fidelity CD Pre : VPI HW-19
    Gallo Ref AV, Frankengallo Ref 3, LC60i : Bryston 9b SST : Meridian 565
    Jordan JX92s : MF X-T100 : Xray v8
    Backburner:Krell KAV-300i
    · Share on FacebookShare on Twitter
  • foxyss
    foxyss Posts: 5
    edited April 2008
    I tested the tweeter terminals and got 5ohms for both sets of speakers (left and right).
    · Share on FacebookShare on Twitter
  • McLoki
    McLoki Posts: 5,231
    edited April 2008
    Don't know if having an LSi15 crossover schematic will help you or not, but thought I would offer this up....

    Michael

    BTW - LSi series is all the way at the bottom of the thread....
    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)
    · Share on FacebookShare on Twitter