How can you check if the subwoofer is working?
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True, but that's why I thought of paper. It will show if it's working at all. Maybe it's weak from a stuck voice coil, or maybe it's completely blown out. It's easier than connecting a tester to the wires. I would first rule out all the settings on the stereo, then a tester at the speaker wire would be my next step in diagnosing, then follow back till you find power...
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I didn't notice which vehicle you have, but mine is accessible from the trunk/boot. Pull the Carpeted cover to expose the gas tank and SubWoofer. It's a TIGHT fit.
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I've also never removed the Sub, so not sure how it comes out, but this gives you access to the wires, and hopefully the bolts that hold it in. Sounds like burmaz might be more help with that part.
Last edited by SuperSport; 02-16-2011 at 04:27 PM.
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Okay, examined the subwoofer and it can move up/down freely by hand, so not dry-rotted plus the wires are all perfect (stemming from a wire harness and looking like-new without any corrosion) with no sign of a previous owner messing with them.
What do I do next? Check for current with a voltage tester? Would that even show up? I have a fancy digital true-RMS multimeter to test with, just need to learn how to use it![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
If no current is making it to the sub, where do I look next, the back of the radio head?
Is there a fuse for this somewhere? I could not find anything like that in the fuse-listing and checked a whole bunch of radio-related ones in the trunk-fusebox (#11, 12, 3, 4, etc.)
What do I do next? Check for current with a voltage tester? Would that even show up? I have a fancy digital true-RMS multimeter to test with, just need to learn how to use it
![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
If no current is making it to the sub, where do I look next, the back of the radio head?
Is there a fuse for this somewhere? I could not find anything like that in the fuse-listing and checked a whole bunch of radio-related ones in the trunk-fusebox (#11, 12, 3, 4, etc.)
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What does it feel like??
Make sure you are playing a CD with Music of heavy Bass or a radio station with music of heavy or medium bass in it.
If that also does not help, turn your Treble all the way down on your Radio, and turn Bass up, you should here something.
![Icon Speaker1](https://www.jaguarforums.com/forum/images/smilies/icon_speaker1.gif)
Okay, examined the subwoofer and it can move up/down freely by hand, so not dry-rotted plus the wires are all perfect (stemming from a wire harness and looking like-new without any corrosion) with no sign of a previous owner messing with them.
What do I do next? Check for current with a voltage tester? Would that even show up? I have a fancy digital true-RMS multimeter to test with, just need to learn how to use it![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
If no current is making it to the sub, where do I look next, the back of the radio head?
Is there a fuse for this somewhere? I could not find anything like that in the fuse-listing and checked a whole bunch of radio-related ones in the trunk-fusebox (#11, 12, 3, 4, etc.)
What do I do next? Check for current with a voltage tester? Would that even show up? I have a fancy digital true-RMS multimeter to test with, just need to learn how to use it
![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
If no current is making it to the sub, where do I look next, the back of the radio head?
Is there a fuse for this somewhere? I could not find anything like that in the fuse-listing and checked a whole bunch of radio-related ones in the trunk-fusebox (#11, 12, 3, 4, etc.)
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Doh, actually I never tried touching it while it is on, lol, but there is no audible difference when the radio subwoofer is set to -7 or +7 when playing Run DMC's You Be Illin' (very bass heavy song) and there is a noticeable lack of bass in the music, like it is all generated from the midrange drivers.
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Visual inspection completed, I would test for volatage at the SubWoofer connection. DC Voltage and at about 24 volts, just to protect your tester. You will definately see spikes if it is getting power when the music is playing. If no voltage there, follow it back to the amp, then the head unit.
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vdpnyc (03-07-2011)
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Thanks, 2 questions:
- test by just touching a multimeter probe to each of the 2 subwoofer contacts (in parallel, like you check for voltage) or disconnect a plug and then pass through the multimeter (like you test for amperage)?
- how do I access the amp? I read somewhere else on this forum it is near the CD changer, but where and how do I remove the carpeting? (are there any plastic retaining fasteners?)
- test by just touching a multimeter probe to each of the 2 subwoofer contacts (in parallel, like you check for voltage) or disconnect a plug and then pass through the multimeter (like you test for amperage)?
- how do I access the amp? I read somewhere else on this forum it is near the CD changer, but where and how do I remove the carpeting? (are there any plastic retaining fasteners?)
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Thanks, 2 questions:
- test by just touching a multimeter probe to each of the 2 subwoofer contacts (in parallel, like you check for voltage) or disconnect a plug and then pass through the multimeter (like you test for amperage)?
- how do I access the amp? I read somewhere else on this forum it is near the CD changer, but where and how do I remove the carpeting? (are there any plastic retaining fasteners?)
- test by just touching a multimeter probe to each of the 2 subwoofer contacts (in parallel, like you check for voltage) or disconnect a plug and then pass through the multimeter (like you test for amperage)?
- how do I access the amp? I read somewhere else on this forum it is near the CD changer, but where and how do I remove the carpeting? (are there any plastic retaining fasteners?)
If I remember correctly, the carpet is tucked behind the tail light (or near it), the cover over the fuel tank, and tucked under the trunk lip. I don't think there are any retainers or anything. AMP is mounted on top of the CD Changer.
Last edited by SuperSport; 03-07-2011 at 03:41 PM.
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vdpnyc (03-07-2011)
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