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My Energy s8.3 hums and buzzes is this a capacitor problem? Which one? Could it be a ground issue? It make noise when powered with no input.

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Infinity tss 750 sub-woofer when powered on immediately pulls speaker in and has loud humming. no inputs hooked up, only plugged in to ac power source.


The loud humming is the sound of AC mains - clearly your amplifier is receiving an input from somewhere and possibly into the front end.

The hum could be induced by radiated energy from nearby unshielded equipment, it could be the result of an accidental hum-loop or could be because the amplifier power supply has a fault.

It is usual practice with amplifier construction to ensure unused inputs are shorted to ground by switching or by additional contacts and wiring at the input sockets. High gain high impedance inputs can cause a great deal of unwanted noise if they are not shorted.

I suggest you read the instruction manual and perhaps Google a few hints and tips about amplifiers and stuff.

Mar 28, 2016 | Infinity Audio Players & Recorders

4 Answers

Klh powered subwoofer model ASW10-120B... when you plug in to power... it makes a loud buzzing/humming noise


I would check the caps on the power supply. They are rather large electrolytic capacitors that will look like they burst and/or leaking. When these die, the caps ground and the sub will make a loud buzzing sound. If you are handy with a soldering iron you can replace them yourself. Replace them with the same voltage or a little bigger and same with the size.

If the cap. says 16v 4700pF on it, for example, a 20v 5300pF or a 16v 6200mF cap. will work for this application.

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Jan 05, 2016 | Audio Players & Recorders

1 Answer

I have extreem amount of noise between my tascam 2488 to computer based recording program , how can I delete the noise ?


What kind of noise is it? If it is hum or buzz, then you probably have a ground loop. If it is hiss, then you are picking up noise in the cable, most likely. For ground loops, see: http://www.audioholics.com/home-theater-connection/ground-loops-eliminating-system-hum-and-buzz

As for the cable, the cheap ones with the red and gray plastic ,olded ends can get noisy after awhile as the shielding is rather fragile. Cracling type noises are usually cable related as well.

Jul 30, 2014 | Tascam 2488 Portastudio Multitrack...

1 Answer

My 412Hot Rod Deville has terrible humming/white noise when distortion channel is on


It doesn't happen often but I suspect that the high gain input jack is defective. With nothing plugged into either input jack part of the signal is grounded and there should not be any noise. It might be that plus a noisy preamp tube. Try swapping the first two tubes to see if there is less noise. Carefully bang your fist or use an insulated tool's handle to hear if the noise changes. It might be an intermittent solder connection as well.

Jul 15, 2017 | Fender Hot Rod Deluxe Guitar Combo...

1 Answer

Hi, I get a buzzing sound coming from my s8.3 when it's plugged into the power outlet. No other cable are connected, it's only plugged into power outlet. Any suggestions? thank you!


I also had a severe hum or buzz that was NOT a ground fault loop issue or any other such problem.

Hummed to the point that reading in the family room was annoying !

I took my amp to a Very Qualified shop and the technician simply insulated the transformer 40.00 usd

Nov 19, 2010 | Energry Speakers Energy Speakers S8.3...

1 Answer

Loud humming noise


this may be result of blown capacitor - have it analyzed by applying strong magnet over the inside speaker , if humming persists, then its not blown capacitor -- the capacitor stores energy, and if that energy is lossed an out in the airwaves, thats the humming effect

Oct 15, 2010 | Cambridge Soundworks BassCube 12 Speaker

2 Answers

I have a low hum with my Carver M 400 amp. How do


If it is accros both channels (on every imput) your best bet is to replace the large electrolytic capacitors in the power supply, these filter out the 50/60 Hz hum from the mains, so they might have failed. Electrolytic capacitors anywhere are good at causing hum!
If they are say 4700UF at 50Volts, you can replace them with any UF rating higher than that, and the same with the voltage. Never go lower than the ratings marked. Also keep an eye out for the temperature rating. It will be given marked "c". If it says 105C then replace with one the same, though it will work with a lower rating it will fail faster than normal. The only problem with electrolytic capacitors is 'space' to fit as they come in many different sizes. So bare that in mind when you a tracking down replacements.

Mar 22, 2010 | Audio Players & Recorders

1 Answer

A Buzzing noise from my Reverb section of the amplifier


i am sensing 60 cycle hum. the reverb will draw more power. i would try what is actually powering the units. power strip??? off of an unknown amperage power outlet? if the electrical system that feeds the a/c outlet is ran in series, you may not be getting enough juice or the outlets have bad grounds. i dont see a capacitor causing the buzz noise, but more of a pop and then sudden loss of signal. may be a resistor. also if you have a reverb tank the lines maybe mixed up in/out, or the tank is going bad.

Nov 16, 2008 | Peavey AMPLIFIER, 1000 WPC, DDT, 8/4/2...

1 Answer

Onkyo HT-SR800 buzzing noise present then vanishes


The hum a fluorescent light makes is the 50 or 60 Hz hum of the alternating current mains supply. Inside the light fitting is a choke which when less than perfect tends to hum. When the choke is loose internally or externally is when the hum becomes an annoying buzz.

When an audio system has a similar tone of buzzing or humming the source will invariably be the same AC mains but how it got in there is difficult to answer...

It could possibly be poor smoothing and regulation of the power supply or an accidental hum loop caused by careless design and/or poor grounding. It could be caused by being induced in the input by connecting leads that are too long and poorly positioned/screened or it could be caused by mismatch between different components causing a poor signal-to-noise-ratio.

I am not sure why it should come and go but the fact it does would indicate a power supply problem more than the other possible causes.

If the Onkyo system has it's own volume control and it is being used witha tv or similar, it is worth trying to imporove things by turning up the tv volume to near maximum and then controlling the volume with the system control.

May 12, 2017 | Onkyo HT-SR800 System

1 Answer

SanyoDS25390 Tv good picture buzzing noise


What are you using as a source? If its a cable/satallite box, double check that first. If its a video input or a scart input, swap out the cables. If it still there you could have an input problem or a filter capacitor going bad. Does the hum get louder with sound? If it does it is an input source and or cables. Good luck Ps please dont forget to rate this thread.

Nov 25, 2006 | Sanyo DS25390 TV

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