Question about Altec Lansing IM7 (WMM137039)

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Speaker going out

One of my front speakers is checking in and out. Sounds like a short.....

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  • Not today Sep 23, 2008

    One of the speakers worked on and off for about 6 months, now it seems to be completely out, - Other speaker works as fine. I can't even get into the thing to see what's going on, it sounds like a flakey connection to me.

  • Anonymous Dec 04, 2008

    my left speaker crackles on higher volumes. my bass level also seems exaggerated even with bass level on remote down v low

  • jcho47 Feb 19, 2009

    Does anyone know how to properly disassemble the iM7? I was able to remove the battery doors, bottom panel, side speaker covers, side speakers, and rear grilles, but I am unable to go further. I still cannot loosen the top half of the rear handle panel, the front iPod bay, and subsequently the front speaker grilles. After removing the handle rubber lining the piece seems to be PVC-glued to the main body but I cannot be sure. I don't want to cut apart the unit just to find out that there was a screw or snap I could have removed beforehand. I was wondering if anybody had any experience with taking apart an iM7.

  • Anonymous Apr 03, 2009

    My IM7 is only 1 year old and everything is working intermittently - I am thinking that something is loose inside. I too tried to take the unit apart and only could get half way. If anyone has experience taking this thing apart could you please post some instructions.
    Thanks

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I had the same problem. Eventually the other speaker quit also. The problem was a broken wire under the door. This required complete disassembly of the unit just to get at these two wires. Sorry the news isn't better.

Posted on Jan 04, 2009

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When i turn on the cd player the sound from the components vuts off but the sound coming through the subwoofer stays on??


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Sounds like it could be a short in the speaker wiring or a blown speaker. Check all wiring to the speakers.

Check all speaker wires from the unit to the speakers.

First check that each pair of speaker terminals at the speaker end is not touching. Or, a wire fell of 1 terminal to rest on another.

Best way to check if it's a blown speaker or a wiring short, is to disconnect all speaker connections ( at the speaker end ) making sure the disconnected wires don't touch each other or any metal in the car. press the reset on the unit and power up. If the unit powers up ok, then its a blown speaker.

Otherwise it's a short in the wiring.

If it's a blown speaker, you can connect 1 speaker at a time and the blown 1 will send the unit into protect mode again.

If it's the wiring, disconnect the unit from the wiring and use and ohm meter to check each pair of cables. A reading suggests a short.

If you don't have an ohm meter a battery and bulb will do. This method usually works on a short.

If you have no joy with either method, take each speaker wire in turn and check with a source of earth (anything metal connected directly to the body of the car, cigar lighter main body when pulled slightly out is good)


Regards

Philip

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1 Answer

No volume


Protect is on because one of your speaker's or wires is shorted out. It comes on to protect the amp from frying, check ALL of your wiring and speakers for shorts to ground, NONE of the speaker wires should go to chassis ground only the stereos negative (-) speaker termina.l
Checking your speaker is easy, take a (D) cell battery and a couple of wires and connect the wires to the speaker, you should hear a click if the speaker is working properly. Good Luck
Leadispenser

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