MMC6500's woofer cutting out

Vital
Vital Posts: 747
edited January 2011 in Car Audio & Electronics
Mmc6500 bi amped by pa500.4

About 2 months ago my right woofer started cutting in and out which led me to believe one of the connectors or wires was lose. Took door panel apart, everything seem ok, installed it back - works like it should, hooray.

Today it started cutting out again for just a few seconds then went out. Upon messing around on the headunits balance/fader I realized that its not completly shot, it cuts in and out but for some reason when it works it only plays upper midrange, no midbass at all.

Blown woofer?
2008 Nissan Altima
Kenwood DNX 5140
Arc Audio IDX and XEQ
Polk Audio SR6500 active and SR124-dvc sealed
Polk Audio PA500.4 and PA1200.1
Post edited by Vital on
· Share on FacebookShare on Twitter

Comments

  • exalted512
    exalted512 Posts: 10,735
    edited January 2011
    sounds like a blown woofer to me if the connection is still solid.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
    · Share on FacebookShare on Twitter
  • Vital
    Vital Posts: 747
    edited January 2011
    I never had a blown speaker before - is it normal for it to still play some frequencies and not others? I thought when speaker is blown it doesn't play at all, not only particular range (lower midrange/midbass in my case)

    Not sure about connection but i sure will take my door panel off again just to make sure all connectors are solid.
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1
    · Share on FacebookShare on Twitter
  • exalted512
    exalted512 Posts: 10,735
    edited January 2011
    Not typical but it does happen. Its caused by a break in the tinsel lead or voice coil typically. If it plays a note that extends the cone out further, it can 'reconnect' that broken lead.

    Same can happen by simply pushing the cone in.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
    · Share on FacebookShare on Twitter
  • Vital
    Vital Posts: 747
    edited January 2011
    Yeah, gonna mess around with troubleshooting. Main problem is that it's freazing cold out and i don't have a garage to work in....

    Thanks guys!
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1
    · Share on FacebookShare on Twitter
  • Vital
    Vital Posts: 747
    edited January 2011
    exalted512 wrote: »
    Not typical but it does happen. Its caused by a break in the tinsel lead or voice coil typically. If it plays a note that extends the cone out further, it can 'reconnect' that broken lead.

    Same can happen by simply pushing the cone in.
    -Cody

    Makes sense.

    On the way to work yesterday woofer just decided to act normal again lol. Played fine for a day and this morning again on the way to work (when i turned the volume up) said "enought" lol and stopped playing low frequencies.

    This is gonna be some serious troubleshooting lol.
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1
    · Share on FacebookShare on Twitter
  • MacLeod
    MacLeod Posts: 14,358
    edited January 2011
    DSkip wrote: »
    Have you checked the wires from the amp? Perhaps one of the wires got pinched somewhere. Troubleshoot the amp/HU by swapping speaker wire/RCA's and see if it has something to do with those.

    This. It's probably not the cause but ya never know.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
    · Share on FacebookShare on Twitter
  • Vital
    Vital Posts: 747
    edited January 2011
    Yeah, gonna start troubleshooting. Main issue is that since it somehow fixes itself i'll need to wait at aleast a week or two after EACH little step - switch wires, rcas, amp's pre-outs...... then there's also a line driver in the mix, x-overs..... i should know for sure by 2012 what the issue is LOL
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1
    · Share on FacebookShare on Twitter
  • MacLeod
    MacLeod Posts: 14,358
    edited January 2011
    Checking the wires should be easy. Just wiggle them at each connection, speaker and amp. If its a bad hook up it should start cutting out immediately. If not, you know youre wiring is solid and you can move on to your speakers.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
    · Share on FacebookShare on Twitter
  • Vital
    Vital Posts: 747
    edited January 2011
    Ok, so it was lose connection. Positive connector going to the woofer somehow got lose right where it meets the woofer's connection point (spade??)
    So it's aaaaaallllllllll gooooooooooodddddddddddd :)

    Thanx guys!
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1
    · Share on FacebookShare on Twitter
  • MacLeod
    MacLeod Posts: 14,358
    edited January 2011
    Man its a burden being right all the time. :biggrin:
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
    · Share on FacebookShare on Twitter
  • arun1963
    arun1963 Posts: 1,797
    edited January 2011
    Chattanooga, TN

    Mac, you moved from Ringgold?
    · Share on FacebookShare on Twitter
  • MacLeod
    MacLeod Posts: 14,358
    edited January 2011
    Nah. Chattanooga sits on the TN/GA border and Ringgold is a tiny suburb only a few miles outside the city limits. Nobody has ever heard of Ringgold cause its so small so its just easier explaining where I live by just saying Chattanooga.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
    · Share on FacebookShare on Twitter
  • Hotdog
    Hotdog Posts: 3
    edited January 2011
    I have a blown woofer on one of my 4 momo's. Can you buy just one woofer individually?
    CDA-9855 (Alpine Head Unit)
    CHA-S634 (Alpine 6 CD Changer)
    2-SR 5250 (polkaudio components
    2-MMC 6500 (polkaudio components)
    JL Audio 700/5
    polkaudio 10" sub w/custom box
    · Share on FacebookShare on Twitter
  • MacLeod
    MacLeod Posts: 14,358
    edited January 2011
    Yes. Contact Polk customer service, they can hook you up.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
    · Share on FacebookShare on Twitter
  • Vital
    Vital Posts: 747
    edited January 2011
    U think they just have them laying around years after they were discontinued??
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1
    · Share on FacebookShare on Twitter
  • MacLeod
    MacLeod Posts: 14,358
    edited January 2011
    Possibly. Youd have to ask them though.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
    · Share on FacebookShare on Twitter