Question about Velodyne HGS-15 Subwoofer

1 Answer

Servo amplifier Tractor sound generate itself . After power off and driver removal ( and signal off ) switched on again. Driver after touch ( by finger ) start tractor sound again . After removal plug ( black plug -- of servo unit ) from electronic board and switch on power supply keeping quied ( only make answer sound after finger kick in driver -- and again quite ) . If it is driver mount servo unit problem where possible to buy .

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

2683 input conection

Posted on Jul 16, 2013

Ad

2 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert 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 repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 124 Answers

SOURCE: No output from speaker

Test the speaker to see if it works.

Remove grille cover, take out the screws holding the speaker, disconnect the wires from the speaker ( note the + and -)

Apply a signal to the speaker, It will work or not.

If speaker is working, then
Could be that the amp section has failed.

The replament amp is not expensive.

Posted on Sep 12, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

No sound coming out of my mackie


Whether you are experienced in electronics repair?
if not, try this simply way:
1: Test whether the power amplifier is still working. See figure 1.
Power OFF,adjust the EQ settings as shown in the picture.
Minimize LEVEL.Switch ON Power. Touch pin 3 at the INPUT socket by using a small screwdriver or piece of wire / cable.
Slowly raise the LEVEL,a little bit only (as the clock showed 7-8) until
sound is heard in speaker. If not heard, slowly raise again LEVEL.
If audio input signal is heard,it can simply be taken to mean
that the amplifier is working.
If LEVEL at 9 o'clock position,and the audio is not heard,
the possibility of the amplifier is damaged.
Switch OFF the power. Take it to a repair place.
6825bf32-21db-4eec-b931-9d8e40f2652f.jpg

2: When the Power LED is lit, but no sound,
There are many possible causes, one of which is:
I have been getting 3 times similar cases, and all are caused by
two Rectifier-Diode (either or both.) damage on the power-supply-unit.
Remove/desolder,measure, if damaged replace it with a new one.
See figure 2-3.
eebe24b3-1cd5-4fba-b883-6ec7daa01b8f.jpg

83a7ac9f-dec0-4f86-8152-b570c34143cd.jpg

Hope it helps. Regards.

...............

May 13, 2014 | Mackie TH-15A Active DJ Powered THUMP...

2 Answers

My Mitsubishi colt CZ1 (07 plate) has problem with cental locking. I can manually central lock but with the remote it locks/unlocks all the doors except the driver's door. Please help. Thanks


Central locking works by way of little electric motors that engages and disengages the door lock. The drivers door has an additional set of contacts in the actuator which signal the controller when it changes position. The controller activates the servo motors when a signal is received from the receiver or from the drivers door servo motor. So in your case I suspect the motor part of the drivers door actuator is done for.
To replace you will have to remove the inner driver's door panel to get at the actuator. The actuator itself cannot be repaired and needs to be replaced as a unit.

Apr 29, 2011 | 2006 Mitsubishi Colt

2 Answers

Trying to drive this pair of speakers. Do you need to have batteries in them? do you have drivers or are they plug and play? If they need drivers can you send them in an email?


What manufacturer of speakers? What model-number?

Most speakers do _NOT_ have any "plug-and-play" capability -- they simply are electro-mechanical devices (amplifier, analog controls).

The amplifier needs power, either batteries, or an AC adapter, to convert the low-level outputs from the sound-card to bigger signals -- enough to move the speaker-cones to push air around, to make sound-waves.

Mar 18, 2011 | Computers & Internet

1 Answer

Sound button not working


Does this mean that there is no sound , if so check the speakers after disconnecting power plug. check the power amplifier output IC, voltage from the power supply, if present the IC can be faulty.
However if the sound is present then the touch pads switches can be faulty. remove clean and reset.
Check the contacts, and the signals to the processor.If not replace the switches .

Dec 31, 2010 | Televison & Video

1 Answer

No sound coming with protection light on


It's either overheated or you may have faulty speaker wiring or a shorted speaker. These directions come from a Samson servo 120a but the theory is the same.

The following conditions will cause the Protection LED to go on:

Initial power-up: For approximately five seconds after initial power-up, the relay

speaker connection circuitry is deactivated and the speaker output is muted. If everything is operating normally, you will hear an audible click at the conclusion of this brief period, as the circuitry is activated and the Servo 120a begins delivering signal to connected speakers (at which point the Speaker LED will light if the Speaker on/off switch is in its "in" position). It is normal for the Protection LED to fade gradually after the amplifier is powered off.

Overheating: A temperature sensing device in the Servo 120a will cause the relay speaker connection circuitry to be activated (and the Protection LED to go on) whenever the operating temperature of the unit rises above a safe level. To guard against this problem, make sure the Servo 120a receives adequate ventilation on all sides ; in extreme environmental conditions, you may also

want to consider the use of cooling fans.

Severe overcurrent conditions: This occurs whenever the signal being output

from the Servo 120a rises to a level above 20% THD (Total Harmonic Distortion).

Shorted speaker cables: This will occur if, due to faulty wiring, the hot and ground signals being output by the Servo 120a short to one another.

Output impedance drops below 2 ohms: This can occur if the Servo 120a is connected to inappropriate speaker systems (see the "Setting Up and Using the Servo 120a" section in this manual for more information).

DC voltage detected at speaker output: The most likely cause of this is an internal failure. In general, any time the Protection LED lights up (other than during the approximately five seconds following initial power-up), there is reason to be concerned. If this occurs, turn the Servo 120a off immediately and carefully check all wiring and external devices in order to locate and correct the condition that caused the LED to light up in the first place.

Dec 27, 2010 | Samson Servo 170 Amplifier

1 Answer

I am getting power but there is no sound from the subs. Wiring harness is correct but when you touch the amp with a screw driver or anything metal it sparks.


Okay well it sounds like you need to rewire the wires going from your amp to your sub-woofers.

Don't touch the amp while it's on with a screw driver!!

Jan 14, 2010 | Volfenhag ZX-7180 Car Audio Amplifier

1 Answer

No sound from Behringer 1800xpro subwoofer after connecting to an amplifier


Hi,

Remember that with the switch in Bi-amp mode that the sub takes its signal from pins 2+/2- on the speakon connector.

First of all you need to prove the circuit if you haven't already done so. Check the amplifier and cable by plugging it into another known working speaker, if this works then we have narrowed it down to the cab itself.

It could be a number of things from cabling, to the internal crossover to the driver itself.

The easiest thing to do is switch the active/passive switch at the back, it won't hurt. If it works then there is an issue with the crossover or the associated cabling, if not then take off the crossover panel with the 6 screws, and check for obvious issues here (wires disconnected, signs of burning around the crossover etc).

If this appear ok the you'll need to check the speaker driver itself. You will probably benefit from taking off the grille.

Push evenly on the cone and listen for scraping noises. These are not good signs, if the cone doesn't move this is another bad sign. Finally, either through the back if you can or if not take out the driver. Use a multimeter to check the passive resistance of the driver. It should be around the 6 to 7 ohm mark. An open circuit here is another sign that the speaker needs repair or replacement.

Dec 15, 2009 | Behringer Audio Players & Recorders

5 Answers

I have two noise-related problems with my '99 Lexus rx300.


I had a similar annoying noise with the root cause being found in the air-mix servo. This servo motor box is one of three I believe and is located on the passenger side of the climate control system and accessed by removing the glove compartment (4 screws) and the panel down just above the floor. The servo in question is located behind a couple of heater tubes and you need a stubby phillips screwdriver to remove it. Disconnect the wiring plug. The servo has a damper actuator on one side. Hold with the actuator down and pry open the case. Don't fret if the snaps break because the unit is held together with screws anyway. Clean the contacts inside the box and re-lube the gears and contact plate with silicone grease. Reassemble and reinstall (kind of a pain). Works fine now in my auto (all is quiet again!) and saves hundreds of bucks vs. a visit to Lexus service. Shield the servo from heater tube heat with some aluminum reflective duct sealing tape. I think the heat breaks the lube down and caused the servo voltage to become errant, causing the servo to "hunt" and generate annoying noise. Good Luck.

Jun 13, 2009 | 1999 Lexus RX 300

1 Answer

Cruise Control


My Answer:

I've only seen Cruise Controls have 1 or possibly 2 wiring problems by design.

Usually the Cruise Control Servo Unit itself if pretty darn dependable, and will outlast most everything else on the SUV/car.

The most common problem is usually a BAD GROUND wire at the CC Servo Unit itself, which is located under the hood and usually where it's mounted off to the drivers side at or near the engine firewall, or else up front nearest the battery box.

The other wiring problem might be a bad connector or dirty connection point from where the wiring harness is run into and under the steering column. That connector can be seen from under the dash area and checked pretty easily with a DVM for proper function.

With either an automatic transmission or clutch driven model there is one other "safety disengage switch" located on either the clutch pedal or else the brake pedal, and this switch (if it's not positioned properly, or defective - as in OPEN) will kill the +12-volt battery POWER going to the CC Servo Unit itself. The CC light may be ON, but there still won't be any battery power to the CC Servo Unit, causing it not to set.

On all newer generation CC units the vehicle "angle" or attitude sensor, and drive shaft VCO pickup sensor design were dropped, and instead the monitored engine speed is now taken directly from the engine's Black Box computer and used as the VCO reference. If this VCO signal is missing then the CC Servo Unit will not engage as well.

If the CC Servo Unit uses a vacuum line feed you'll need to check that as well to make sure the hose is intact and it's making a good snug connection.

If all these points show to be good - then the CC Servo Unit itself is bad and needs to be replaced. Make sure you troubleshoot everything else above first as the CC Servo Unit is no doubt pretty pricey in cost, and may not be bad at all.

Hope this solves your problem.

Frank

Aug 06, 2008 | 2003 Jeep Grand Cherokee

Not finding what you are looking for?
Velodyne HGS-15 Subwoofer Logo

82 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

Matthew Spark
Matthew Spark

Level 3 Expert

1066 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1667 Answers

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

Answer questions

Manuals & User Guides

Loading...