Question about Velodyne CHT-10 Subwoofer

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No sound Will give bass for a short period of time, if I power it off on back on it will work for another short period, capacitor?

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  • dcksjk Aug 05, 2008

    I have the exact same problem with my CHT-10 Velodyne. I always have to turn off the power switch and then turn it back on for it to work for a SHORT period of time. It does not feel hot to the touch and has no hot odor. I didn't understand the solution given for the same problem I am having. My email is dcksjk@comcast.net and would certainly appreciate any help you may be able to give to me.

  • fredjones May 11, 2010

    On the back of the unit, find the "auto on" switch, set this switch so the unit is always on. When in this mode, does the unit work fine?



    If yes then it is a setting adjustment you need to make with your system. The sub out put is too low to keep the sub on. rasie the sub out put on your source unit, then lower the sub volume to mach the rest of the speakers,

  • fredjones May 11, 2010



    Is this problem all the time?



    Only during a movie?



    Does it play all the time when listening to music

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Overheating and powering itself down... will it stay on if you play it quieter.

Posted on May 17, 2008

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Posted on Jan 02, 2017

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1 Answer

IBENEZ BASS AMP P500H NO SOUND


I had a short at one of the electrolytic capacitors at the EQ board. Check the voltages!

Apr 11, 2014 | Ibanez P500H Promethean Bass Amplifier...

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It plays for about 30 minutes and then just stops, as if overheating. After a cooldown period, it starts up again for another short period. Suggestions? Any recommended vents I could cut in...


The small Fender products often have a TDA2050 power chip in them. The chip is on a thin aluminum heatsink and is intended for light use. If you try to sound like a bass guitar amp with this, the chip will go into thermal protection mode. Cutting vents will not help very much, and pushing it to these levels will destroy the speaker eventually. If you need more power, buy a bigger amp. This one would be suitable for a 10 foot by 10 foot room.

May 24, 2011 | Fender Musical Instruments Corporation...

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Works great for a period of time then- it starts a pulsating hum. Sometimes it happens after 30 minutes and other times it is a couple of hours before it starts.


it sounds like a bad sub woofer amplifer, as the unit heats up the capacitors start to leak and the amp will try to shut down. it would depend on how hard you are driving it, (heavy bass versus light bass) that would cause it to fail sooner than later. You need to replace the internal amp

Mar 20, 2011 | Velodyne DPS-10 Subwoofer

1 Answer

No sound from tweeter bx5a


First of all, never connect the audio from your receiver directly to the tweeter. You can blow the tweeter instantly. The mid-bass driver can be damaged from a direct connection as well.

Since you get absolutely no sound from either driver, this seems to implicate the crossover. If the crossover has opened, no signal gets through, if it has opened early in the signal path.

But, it is also possible that a short exists, and that perhaps your amp cuts off the output having sensed a short. The short could be in the crossover or one of the drivers.

Here are some troubleshooting tips--

To prevent damage to your amp, turn it off while making or breaking any connections inside the speaker boxes.

Write down which wires get connected to which place on the drivers, so you can get them back where they belong.

With your amp turned off, connect the bad speaker to your amp. You've already verified that no sound is produced when both drivers are connected.

So, with your amp off, disconnect one wire from the tweeter in the bad box.

Briefly turn your amp on and listen for sound.

If you get sound, the tweeter is shorted.

If you get no sound, with the amp off, reconnect the tweeter in the bad box and disconnect one wire from the mid-bass driver.

Briefly turn the amp on and listen before turning the amp off.

If you get sound now, but not before, the mid-bass driver is shorted.

If you got no sound either way, check the DC resistance of the mid-bass driver (only, not the tweeter. Ohmmeters put out a small DC voltage to test resistance. That DC voltage might damage a tweeter, maybe. Don't risk it). Ohm the mid-bass driver while it is not connected to the crossover. If the driver is good, you should read some ohms--a little less than the stated impedance. An 8 ohm driver might read 6.5 ohms, for instance. If you get an open or a short (with the crossover disconnected from the mid-bass driver) you have a blown driver. Two actually, since neither the tweeter nor the mid-bass driver produced any sound in the previous tests.

If you can't get ahold of an ohmmeter, try this--

Open the good, working speaker and place the two side by side.

Connect your amp to the bad speaker box only.

With your amp turned off, disconnect the wires from the mid-bass driver in the bad box and connect them to the mid-bass driver in the good box. Disconnect one of the wires from the "good" mid-bass driver first, so you don't have two crossovers connected to it at the same time--even if only one of them will get powered on. It keeps the confusion down to a minimum when trying to isolate your problem. Oh, and disconnect one wire from the bad tweeter, in case it is shorted.

Turn the amp on and listen briefly before turning the amp off.

If you got sound, the "bad" crossover is fine, but the "bad" mid-bass driver is blown. And, since you got no sound in the previous tests, the "bad" tweeter is blown, as well.

If you got no sound, try it the other way around. Meaning--

With the amp off, disconnect the speaker wires coming from your amp from the bad speaker box and connect them to the good speaker box.

Your amp is now connected only to the good speaker box.

With the amp still off, connect the mid-bass wires from the good box to the mid-bass driver in the bad box. Remember to disconnect one of the "bad" crossover wires from its own driver first, so only one crossover is connected to the "bad" mid-midbass driver. Remember to disconnect one wire from the "good" and "bad" tweeters, so the only sound you hear--if any--is from the "bad" mid-bass driver, powered by the "good" crossover.

If this produces sound, but the previous attempts failed, you have a crossover problem.

If you still get no sound, something went wrong and you need to retest the good speaker by itself and back up a few steps and try again.

Assuming you got sound from the "good" crossover while it was driving your "bad" mid-bass, make sure no wires have come loose inside the "bad" box. Assuming you have sound connections at each end of each wire, you now need to desolder the electrolytic capacitors from the circuit board.

Make sure you mark them first, so you can put them back where they belong.

You can remove only one at a time, if that helps.

Use an ohmmeter to check some components.

The big red coil should read pretty close to a short, maybe one ohm.

The capacitors should read open or infinite resistance, although you might see a steadily increasing resistance while the capacitor charges up from the ohmmeter. If you read a steady low resistance on a capacitor after it has been removed from the circuit board, that capacitor is bad and must be replaced. The markings on the capacitor should give you some clues as to the proper replacement.

All things considered, I suspect that your problem is a shorted electrolytic capacitor. But, I gave you all I could think of so you can narrow it down and isolate the problem, whatever it might be.

I hope this helps.

Feb 23, 2011 | M-Audio BX5a Speaker

1 Answer

Soo I just finished installing my subs and the bass hit the first note then didnt play anything else. I had to leave because i was at work but on the way home I had very short periods off bass ( 1/2 - 4...


There on there way to being burnt those subs can handle very little, i used to have those subs and gave them 125 watts each and they sounded perfect.

Feb 07, 2010 | Car Audio & Video

2 Answers

TV shuts down periodically for short periods of time


there is too much dust on the bulb. Take off the back panel and spray some compressed air over the bulb and clean out the fan. The dust is burning on the lamp which is causing the safety switch or breaker to shut down the bulb. I cleaned mine today and it works like new. Give it a try and let me know

Aug 14, 2009 | Sony KDF-E60A20 60 in. LCD HDTV

4 Answers

Bose Companion 5 Producing Unstable Sound


The intensive bass is making the speaker shake very much and that could have caused a short that changes the volume after a while when the speaker has been shaking for a period of time. You could try lowering the bass or volume to see if it makes a change in how long it takes to make the volume change.

Oct 18, 2008 | Audio Players & Recorders

1 Answer

Amp clickin in and out


Had a similar problem, mine was a power problem.
Power meaning voltage.
Those big bass speakers draw lots of power. My original alternator couldn't keep up.

Question: Do your headlights dim in rhythm to the bass hits?

If so, your sound system wants more power than your vehicle is producing.

My first solution was a high output alternator. It worked great.

Then I added another amp. Not great anymore.

My second solution was to tie in a large capacitor to the amps power supply. (These a big (1 farad), about the size of a Pringles can)

Your amps power consumption is not uniform. Each time your amp punches the bass, it draws extra power. If that power isn't available, it starves and shuts down (if only for a second) then restarts.

The higher the gain, especially using a low pass filter, the more power needed for each thump. Thats why when you turn the bass down, you can get higher volume from the rest of the system.

How a capacitor can help (simply put):
In this application, the capacitor acts like an auxiliary battery, smoothing out power fluxuations. The capacitor builds up its charge literally between bass hits when power demand is low. Then releases it's charge when the demand is high. Think of it as an on-demand power boost.

Hope this helped

Mike


Jul 10, 2008 | Rockford Fosgate P3001 Car Audio Amplifier

2 Answers

Bass sounds flat when volume is increased


probably your power is too short, increase your gauge wire, and your ground wire of the amplifier has to be shortly as possible, and the positive has to be enough to support peak power, you can also put a big capacitor on the positive wire to give some more power while the bass peak.

Apr 26, 2008 | Earthquake Sound PH-D2 Car Audio Amplifier

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