Velodyne DLS4000R Subwoofer Speaker Logo

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Posted on Apr 03, 2011
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I have the velodyne DLS4000R and it keeps popping at high volumes ??

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  • Posted on Jun 30, 2013
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I've encountered the same problem with the subs popping at high volumes. Being an electronic hobbyist myself, I've open up the power amp module ( the rear side with a enormous heat sink ).
I managed to identified my problem due to 1 of the 2pcs of 4700 / 63V uF capacitor leaked ( aka reservoir caps ) and that leads to shorting of an NPN transistor D669A. I've since replaced both the 4700uF / 63V uF capacitors ( advisable to replaced a pair ) and the faulty D669A transistor. So far, my subs is working like new again...lol.

  • Jesse Davis
    Jesse Davis Dec 14, 2013

    I'm having the same popping problem. Seems like the amp is kicking into clip prevention at volumes that weren't a problem before. Was the amp particularly hard to remove? I have all the perimeter screws out and it won't budge. Velodyne wants $190 to repair (plus shipping).

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  • Posted on Apr 05, 2011
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Popping ????? if popping sounds mechanical: chek for speaker blowned (replace or repair speaker)
if popping sounds electronic: chek circuitry.

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Very low output and clicking noise. Circuit boards glued in. Company wants $250 to fix. Any other possibilities for rehab?
The amp is clipping.. witch could mean there is a bad or lose ground, or wire are lose on speaker or worst you voice coil is melted.
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Sep 11, 2015 • Velodyne DLS4000R Subwoofer Speaker
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I'd contact Velodyne directly. Check their website, velodyne.com/contacts/
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Aug 31, 2015 • Velodyne Audio Players & Recorders
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I believe the unit has a blown fuse, but I cant locate it?
Hello,

If the fuse is blown, then you can locate the fuses at the power stage of the power supply, trace the LIVE terminal on the you see a link that connect the fuse and the LIVE terminal of the power source, most of the fuse are easily detached, because they have a fuse holder, but some are resistor like in appearance, it is always solder to the panel board, which make it difficult for people to know that is a fuse, but as a technician they will know.

Hope this will help in solving the problem...
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Any good quality audio shop or electronics repair shop should be able to fix this.


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Mar 26, 2009 • Velodyne SPL-1000 Subwoofer
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No sound
1. Verify unit is plugged in and power outlet used is active.
2. Is power switch on?
3. Is auto turn on/off set properly?
4. Is unit receiving an input signal from your source?
5. Have all controls on subwoofer (volume, crossover, phase, etc.) been
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http://www.velodyne.com/products/manuals/DLS.pdf
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Go to the Velodyne web site, look under the support section and check the service center listings.

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DLS4000R Subwoofer Speaker

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Very low output and clicking noise. Circuit boards glued in. Company wants $250 to fix. Any other possibilities for rehab?

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