Question about Behringer Truth B2031a 225-watt Powered Studio Monitors

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One of my monitors when i turn it on making a strange noise and dont work to sort it?

Its making a strange noise very strong sound like power cicuito or something..

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When used, it seems to effect guitar amplifiers and cause a strange sort of a chorus sound, like somehow the unit is bleeding into the other amps.

it maybe interference picked up through an unsheided or poorly sheided cable or through single coil type pickups rather though the amp itself. You might also try get your power for the amps and this unit through different circuits.

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Sounds like feedback from your monitors, the speakers can't be pointing in the direction of the mic.

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I own a Peavey Valveking vk100 and when using the distortion channel on high gain it makes a weird whistle-like noise (not a feedback sound). The strange thing is that if i lower the gain, the sound...

Sounds like Tube Microphonics to me...
Change the 12AX7 (I guess) for that channel for starters.
If not, some condenser went crazy.

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Psr 60 no sound

Are you using the original PA-4 power adapter that goes with this unit? Using the wrong one would cause it to not work properly. Weak batteries would do the same. A generic power adapter would also, if working would cause static noises in the sound. The PA-4 is an odd unit, it is 10volt DC at 1 amp output. IF the one you are using is less than 1 amp, meaning if it says 400mA or something with an "m" in front of the A, UNLESS it is at least 1000, then it isn't strong enough to work correctly, EVEN if it powers up. If you have the wrong one, you can find it here:

I hope this helps you.

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I have a problem with my behringer b3031a truth studio monitors.Slightly before a sound it's played (and during the playing) they make a little buzz. Ex. I turn on Windows Media Player and as long as...

The fault is not with the speakers... It is with the noisy audio system common in computers. Get a decent USB audio interface and use balanced interconnect cables to solve the problem.

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My Marshall Haze 40 Amp started making a very loud humming noise after a couple hours of playing.I let it cool down,and turned it back on and the noise came back after a few minutes

may be one of the electrolytic capacitors in the power supply has become leaky...this is a common problem among you let it cool down..then after a period of time the capacitor heats up and then causes the hum...the power supply caps filter out the 60 hertz ac line noise...which is probably the frequency of the sound it is making...this is a good indication of these caps going bad....another thing you can check is to see if the amp is properly grounded(eg: the ground pin on the plug is present) and that you dont have an open cord or input

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It sounds like you have cable in the wrong ports. Make sure your cabling goes in to out on all ports. Also make sure no cable are bent or heavy equipment on top of it. If your getting sound but sounds like muted sound its either cable in the wrong place bad cable or amp setting is to low.

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