Question about Velodyne DLS4000R Subwoofer Speaker

2 Answers

I have the velodyne DLS4000R and it keeps popping at high volumes ??

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

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

Posted on Jun 30, 2013

  • 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).


  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 15 Answers

Popping ????? if popping sounds mechanical: chek for speaker blowned (replace or repair speaker)
if popping sounds electronic: chek circuitry.

Posted on Apr 05, 2011


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

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.
good luck home this helps

Sep 11, 2015 | Velodyne DLS4000R Subwoofer Speaker

1 Answer

Has low volume and clicking noise.

I'd contact Velodyne directly. Check their website,

Aug 31, 2015 | Velodyne Audio Players & Recorders

1 Answer

I believe the unit has a blown fuse, but I cant locate it?


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...

Aug 05, 2011 | Velodyne DLS4000R Subwoofer Speaker

1 Answer

My velodyne sub rattles when volume turn up

How high? There IS a limit to any speaker's volume and cone travel of the driver. The woofer could be bottoming out. Driving any speaker with excessively or with anm UNDER powered amp can send speaker-killing square-waves to it.

Feb 27, 2010 | Audio Players & Recorders

1 Answer

I just got a velodyne deq 10r, i paired it with 5

In the manual that was included with the unit, it covers the basics of this question.

It really is up to you and how you want the sub to work with your mains.

Try one setting and adjust to find what you like.

Nov 22, 2009 | Velodyne Audio Players & Recorders

1 Answer

Velodyne sub woofer: Series S Model: VA08BVX10

The volume control pot can be replaced.

Any good quality audio shop or electronics repair shop should be able to fix this.

Nov 17, 2009 | Velodyne SPL-1000 Subwoofer

1 Answer

I just bought a used Velodyne hps 18 subwoofer. I am hearing popping sounds even at idle. What might be causing it?

This is related to the "servo control" circuit.

For repair you will need to contact Velodyne.

Nov 16, 2009 | Velodyne HGS-18 Speaker

1 Answer

No volume control on Velodyne SPL12BV sub amp

If my memory serves me on this amp, the volume control is actually a chip in the pre-amp section.

You could try and replace the actual knob on the panel and see if that fixes the problem.
If not, you will most likely have to send the amp section back to Velodyne for repair.

If you do send the amp back, use some masking tape and mark the speaker leads. Hooking these back up wrong will blow the driver and the amp.

Mar 26, 2009 | Velodyne SPL-1000 Subwoofer

1 Answer

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
properly set?
6. If unit has been running at high levels, one of the protection circuits may be engaged.
7. Has the built-in amplifier overheated?

Mar 22, 2009 | Velodyne DLS-3500 Subwoofer

1 Answer

Velodyne SPL-1000 II subwoofer only snaps, pops and hisses

Go to the Velodyne web site, look under the support section and check the service center listings.

Also you could try the place you purchased the unit.

Dec 30, 2008 | Velodyne SPL-1000 II Subwoofer

Not finding what you are looking for?
Velodyne DLS4000R Subwoofer Speaker Logo

Related Topics:

513 people viewed this question

Ask a Question

Usually answered in minutes!

Top Velodyne Audio Players & Recorders Experts

Henry  Thomas
Henry Thomas

Level 3 Expert

1074 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1689 Answers


Level 3 Expert

5309 Answers

Are you a Velodyne Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides