Question about Soundstream Bx-20z Car Epicenter Digital Bass Processor

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I'm getting a hum when my volume control from the bx 20z is close to my amplifier

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I have the Klipsch Sub-10 Subwoofer, and it no longer plays music. Now it hums (vibrates constant) and corresponds (louder or softer) with volume control. Light is home but no one home situation. V


Does the subwoofer have the same hum when the input cables have been unplugged? Many input cables use very fine conductors, which often fail. A bad cable will often introduce a hum and prevent a signal from getting through. If the noise is still present without the input cable(s) connected, then repair options are limited. No schematics are available. There's a daughterboard that has been available, but its failure usually causes the system to die (short-circuit). The cost to repair the amplifier may be close to the cost to replace the entire sub.

Sep 14, 2014 | Klipsch Synergy Sub-10 Subwoofer Speaker

1 Answer

Recently, after about an hour of play, when my Adcom GTP-760 is warm, a low level hum begins and can be heard on all channels regardles of the source selected. The hum cannot be heard when the unit is...


The filter capacitors are probably going bad is the likely cause.

It may also be bypass capacitor in the preamp section.

Noting whether the hum volume varies with the setting of the volume control would aid troubleshooters.

One might be able to isolate the bad component with freeze mist/circuit cooler.

Apr 21, 2010 | Adcom GTP-760 Amplifier

1 Answer

Hifonics 1500D started to hum through subs after beating on them. Unhooked rca's and not the sound. Any ideas?


Check power supply diods. power supply capacitors and power supply and output transistors.
Remember, distortion is the biggest killer of subs and amps. Everything made by anybody has its limit.

Apr 16, 2010 | Hifonics Brutus BX 1505D Car Audio...

2 Answers

I stopped having sound coming from the speakers. I checked and we are not on mute, and the volume is turned up high.


Make sure all your connections are tight and you have power to your speakers...Then go Start>Control Panel>Sound and Hardware>Sound, after you are in here make sure that your speakers are selected as default device.
Hope this helps, pls rate

Mar 19, 2010 | Proview Computers & Internet

1 Answer

Constant buzzing in my 15 W amplifier


Make sure you have a ground prong on your power cord. Most input jacks nowadays are closed circuit. They have a switch built in that won't allow any sound without the cord plugged in. You may have a damaged jack that will give you a loud hiss, a loud hum or crackling depending on what volume your controls are set at.

Aug 27, 2009 | Line 6 Spider Iii 15 Modeling Guitar...

2 Answers

Amplifiers has a hum


The hum therefore is a generated before it reaches the volume control. Check that all the connects are good, a bad earth will cause a hum. If the hum is in both channels it will be something that is common to both. Electrolytic Capacitors are there to take out hum, so suspect them first!

Jun 06, 2009 | JVC Audio Players & Recorders

1 Answer

Bad Hum


Make sure you have a good ground from the amplifier to a metal surface in the car. Make sure this surface isn't paint covered and use a solid wire if possible (not stranded) to complete the ground.

Does the Hum pulsate?

Does the Hum get louder or softer when the ignition is turned?

Make sure your speker cables are not coiled or wraped up and or near any transformers, batteries, or other wires that have current running through them.

The most important thing is grounding.

Sep 14, 2008 | Hifonics Brutus BX 1205D Car Audio...

1 Answer

Gemsound power speaker pxa105


First,
Disconnect any input cables from the amp. Turn down the volume controls and disconnect the speakers. Power back on. If you still blow fuses with nothing hooked up, have the amp fixed.
If the fuse holds, shut down and connect the speakers, leaving the volume controls down. Power up and see if your fuse holds. If you have hum, an output transistor is most likely shorted. If you have no noise, SLOWLY turn up the volume controls and listen for the hum. If all is quiet, turn down the volume controls and connect your input cables and turn the volume back up. Noise? check your cables!
Mister Phil

Apr 07, 2008 | NAD C350 2-Channel Amplifier

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