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Midiland mx-2 speaker humming buzzing

Doesn't matter where I plug the large black box in (meaning different wall outlets next to NO OTHER electrical devices), when I plug in the control device the speaker starts to hum or buzz. changing the volume doesn't change the hum

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: Switching on sound system results in consistent

The humming noise could be a earth loop problem.
This is caused by having the speakers/sub woofer connected to one power point and the computer connected to a different power point.
To eliminate earth loop problems, connect both the speakers/sub woofer and computer to only one power point. Connect all your equipment to one power point using a power board.

Posted on Sep 24, 2010

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SOURCE: midiland 8200 (ADS 4000 controller) 5.1 hum problem

You may have an earth loop problem. This is caused by connect various equipment to different mains power outlets.
Connect all the PCs, audio and speakers to a single mains power outlet, use a power board so they are connected to the one mains power outlet.
I suggest you use a power board that has a built-in surge protection.

Posted on Nov 14, 2011

  • 1 Answer

SOURCE: midiland 8200 (ADS 4000 controller) 5.1 hum problem


Posted on Mar 26, 2012

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How do I eliminate buzz?

Things to check:
1. With your multi meter, measure from left ground to right ground. What do you get? Measure from each input ground to chassis. What do you get there.

2. Get or make a pair of shorting plugs. Plug those into the inputs. Power on. Hum there or gone?

3. Turn the pre-amp on. Connect. Level of hum change with preamp on?

4 additional information. How efficient are your speakers? This is a big amp, high-efficiency speakers may show some noise, while low-efficiency speakers won't.

A trip back to the shop may be indicated, too.

Nov 23, 2015 | Adcom GFA-5500 2-Channel Amplifier

1 Answer

Testing household outlets with 3 light tester

Have you tried to determine if the problem outlets might be controlled by a wall-switch? This could be the case if separate black wires coming into the box are being used for the different outlets.

Dec 04, 2012 | IDEAL Electrical Supplies

2 Answers

Midiland 8200 (ADS 4000 controller) 5.1 hum problem

You may have an earth loop problem. This is caused by connect various equipment to different mains power outlets.
Connect all the PCs, audio and speakers to a single mains power outlet, use a power board so they are connected to the one mains power outlet.
I suggest you use a power board that has a built-in surge protection.

Nov 14, 2011 | MidiLand S4 8200 Computer Speakers

1 Answer

I have an older model Harman Kardon AVR and have started hearing humming from the speakers that are attached to it. Is my receiver going bad or is there something else I need to do to fix this problem?

you may have a bad Earth power 110 V AC cable connection which makes such hum / buzz even nothing connected..
Check the connections between components and make sure they are secure before proceeding to the next Step. Sometimes, loose connections can cause a hum.
  • Separate the audio cables from the power cables; electromagnetic interference from the power cables can cause stereo hum. Use cable ties to secure the audio cables away from the power cables.
  • Plug in a surge protector to the outlet, and then plug all the components into that surge protector
  • Connect a ground plug to the surge protector and then plug the ground plug into the main outlet. A ground plug is available at any hardware store, and turns a three prong connection into a two prong. Ground plugs help eliminate 60 cycle hum.
  • 5 Connect the ground wire from your turntable to the ground wire connection on the receiver. If this doesn't work, looking on the back there should be a grounding point,

    Unplug your receiver.. Split a wire and attach one of the splits to the receiver where you will see the text, "ground" or something similar. Attach the other end to something metal such as a pipe that goes into the ground. Secure with electrical tape. Plug in.
    connect the ground wire to a screw on the electrical outlet.

    Read more: How to Fix a Hum on a Stereo Receiver '

    Take care and please remember to rate "AS THUMBS UP" Thanks
  • Jun 20, 2011 | Harman Kardon AVR 85

    1 Answer

    I have bought an optical fibre cable to connect from my jamo a305 to my new sony nx810 tv and im getting a buzzing sound, there are 2 optical fibre outputs on the back of the amp, which one do i connect it...

    Have you looked at the manuals?

    A TV won't run external speakers directly. Besides, the TV-related audio should originate at, say, the cable Box, and go straight to your (presumed) AV receiver for the best possible decoding and reproduction.

    Buzzing is an analog phenomenon and is NOT carried by optical cable in any case.

    Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversible, try that. Sometimes the buzz is from an attached device. Make sure all audio cables are plugged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's. I've also seen variable track lights induce noise but it's usually minor.

    Try rotating the power cord in the wall outlet.

    If it still buzzes with no cables or anything external attached there's an internal problem.

    Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

    Reverse the cables Left to Right to see if it stays with the cable or the input channel. Follow it back to the source, isolating in the same manner. Eventually you will find the entrance point of the hum. Frequently a cable's ground will oxidize over time and simply removing and reattaching the cable with a twisting motion will re-establish the shield.

    May 02, 2011 | Jamo A 305 Main / Stereo Speaker

    1 Answer

    Speaker humming....what is the course?

    How to Eliminate the Hum and Buzz from your Sound System

    Is your sound system making noises you don't want to hear? Try these tips to clear it up!


    Hum is usually the result of using electrical outlets with different grounds. To verify this, run an extension cord from the outlet that the amplifiers are plugged in, to the mixer.

    Remove all the DI boxes and adapters. Connect the mixer to the amplifiers with balanced cables.

    Be sure that all your cables and connectors are correctly wired:

    Pin 1 shield
    Pin 2 + white/red
    Pin 3 - black

    Note: If the system has an electronic crossover, equalizer, or need to keep them in the signal chain to protect the system from damage. Just make sure all the cables are balanced and the pin-out on the connectors is correct.

    If your gear doesn't have balanced connections use good shielded cables with the proper connectors.... NO ADAPTORS!!!

    If the system still has noise, check each channel on the mixer by removing the input connections. There may be a DI box on stage that is also interacting and causing a ground loop. If that is the case try a different DI and make sure that all the instruments and amps on stage are also on the same dedicated ground as the mixer and amplifiers.

    If the hum is gone using the extension cord you will need the have your electrician run a dedicated ground to the mixer and amplifier electrical plugs.

    Simple Static
    Is static causing problems in your reel-to-reel (web) process?

    Tips & Warnings

    Removing the DI boxes, hum eliminators and bad cables may improve the sound quality...unless the DI boxes use very expensive line level transformers (Good ones are about $75 for just the raw transformer inside the box) the signal is being squished thru a $5 instrument level DI box.
    DO NOT lift the grounds on any of the AC inputs to the amps or the mixer as this could result in electrocution. OUCH!

    Hope it helped..

    Please don't forget to rate me ..Thanks...

    Have a nice day..

    Feb 21, 2011 | Eltax Atomic A-10.2R Speaker

    1 Answer

    I recently connected my satellite reciever to my

    Iassume you mean you hear the buzz independently of the audio program - simply connecting the cable causes the buzz?

    If tanything in the mix is powered from different AC sources you may have a different ground potential. Sometimes manipulating the orientation of one or more ac plugs will solve hum problems.

    Apr 02, 2010 | M&K Sound Mp Series MX-350 MK II THX...

    1 Answer

    There is a humming noise when I plug my computer speakers in to my laptop cmputer. The speakers are made by bose.

    Is there a separate power supply for your speakers? If yes, turn the plug over in the outlet.

    Does it buzzz all the time or only when you are plugging it in? Is there a flourescent desk light close by? Flourescent lights can interfere with your speaker system.

    Are you able to independently determine if the electric outlet your devices are plugged into are properly wired?

    Do not remove the outlet from the wall. If you have a volt ohm meter, you can do this test.

    Inside the box in the wall, there are three wires, a black (hot), a white (neutral) and a green (ground). Ultimately, the green and the white are attached to a common ground back at your power box by virtue that the service entrance is bonded ... don't try to reconcile this.

    You can look at the outlet and see there are two slots and a round hole (times 2). Notice that there is a big slot and a small slot. The hot wire is attached to the small slot and the neutral wire is attached to the big slot. The green wire is attached to the round hole or ground.

    With a volt/ohm meter (available at your hardware store for about $10.00) with the setting for 250 volts AC, insert one probe into the small slot and the other probe into the large slot. You should get a reading of 125 volts more or less.

    Remove the probe from the large slot (on the left side if the ground is at the bottom) and insert it into the ground. If you have a reading similar to your first reading, your plug is properly wired. If you get no reading between Hot and Ground it is not properly wired, you probably have a condition knows as reverse polarity. Check the other side, i.e. measure between the large slot and ground, if you have voltage, you definitely have reverse polarity. If you are handy, you can fix this yourself, if you are unsure, get it fixed by a pro.

    If you do it yourself, remember the dark wire goes to the dark screw (brass). The light wire goes to the light colored screw (zinc) and the green wirre goes to the green screw.

    There is the possibility that your ground is not actually connected. If your ground is not connected, you will not get a reading between black and ground. You can check this by setting your meter to Ohms. As I said, ultimately, green and white are common back at your power panel. Cross the probes together and watch your meter, it should show SHORT. Insert one probe into the ground part of your plug and the other probe in the big slot. You should read SHORT.

    I tell you all this because buzzing can be traced to bad electric. Please test yours and be careful.

    Please let me know what happens and if you have more question or comment - please post a comment to this question.

    I hope this helps you .

    Thanks for using

    Please vote



    Dec 04, 2009 | Bose Companion 2 Computer Speakers

    2 Answers

    One speaker buzz when cold

    It works fine for a couple of minutes the starts to hum. If you turn up the volume it masks the noise but is till audible, also the video switching cuts out. after examining the components I have seen some heat discoloration in the power suply area and believe it to be power for the video board. disconecting the ribbon cable form the video board the hum goes away, and so does any video wich does'nt matter for me because my monitor1.gif does all the HD video1.gif switching. hope this may help with some noise problems.

    Jan 23, 2008 | Harman Kardon AVR 225 Receiver

    2 Answers

    Home theater ground loop problem

    Boy you must have a mess. We will start process of elimination. Make sure power cords are out of the wall at first. First plug the preamp into the duplex then plug the amplifier into the wall. Connect the speakers then connect the wires between the preamp and amplifier. All should be well. If buzzing countinues, you need to find a ground adapter. This is a small device that on the female side has 3 prongs and the male said 2 female redeptor. If your using a AC strip plug put the adapter on and then plug in wall...

    Well pick it up in the next chapter if nothing works here...

    Jeff S

    Jan 17, 2008 | Audio Players & Recorders

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