Question about ElectroVoice Sx300we 300w 12" 2-way Sx/sb Seriest

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Hi, i have a pair of ev sx300's but one of them has developed a buzz. It buzzes to the bassy parts of the music. Is there a way to fix this?

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The woofer is blown recone or replace it

Posted on Nov 09, 2013

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Posted on Jan 02, 2017

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Had lots of buzzing coming from the back of Marshall AS50D. Removed the back cover and buzz gone. Any problem with leaving back cover off? Warnings on the back say not to remove the cover!


It was probably just loose screws and the cover was vibrating. Reinstall it and check that the screws hold in tight. If they're not, fill them with glue and some toothpicks, redrill the holes (the bit has to be as thick as the center of the screw, so that just the threads dig into the wood) and reinstall the grill.
If the vibrations persist, that means something else is loose. Try first with the screws that hold the metal chassis. Check for loose speakers, too. Then try the screws and nuts that hold the transformer, PCB, etc. These should have thread locker and not be loose, but if they are, clean it well with thinner and reapply some thread locker.
Only do this if you have experience and know what you are doing, and the safety precautions you have to take. Don't think you know, read safety precautions when working with electric equipment. The safest bet is to take it to a tech.
Also, removing the cover changes the sound of the amlifier. It should sound more bassy. It doesn't have tubes, so it shouldn't be a big deal, except that you should keep it for resale.

Jul 22, 2017 | Marshall Music

2 Answers

What causes buzzing in speakers?


There are many causes of buzz, so it should be checked step by step :
- Bad connection on the input connector, or cord.
- Amplifier, basically have the block diagram like this:
25850676-l1qpqmriditabltrjczr2eku-5-0.jpg If in one block damage, buzz can be heard.In the amplifier.
Generally occurs in the PSU and / or power amplifiers.
Fix it to the experts,because it requires a good knowledge of electronics.
Blown speaker cone, does not cause a buzz.
Short circuit along the wires supplying the audio, it will not cause any sound in the speakers, including the sound of music.
Try also, disconnect the input connector, whether the buzz is still audible. If after the input connector is removed, the buzz disappears, the possibility of buzz came from another device before the amplifier.

Sep 05, 2015 | Behringer Xenyx 1202fx Mixer 12 Input 2...

3 Answers

What would cause a buzz in speakers?


There are many causes of buzz, so it should be checked step by step :
- Bad connection on the input connector, or cord.
- Amplifier, basically have the block diagram like this. View image.25850665-l1qpqmriditabltrjczr2eku-2-0.jpg
If in one block damage, buzz can be heard.In the amplifier.
Generally occurs in the PSU and / or power amplifiers.
Fix it to the experts,because it requires a good knowledge of electronics.
Blown speaker cone, does not cause a buzz.
Short circuit along the wires supplying the audio, it will not cause any sound in the speakers, including the sound of music.
Try also, disconnect the input connector, whether the buzz is still audible. If after the input connector is removed, the buzz disappears, the possibility of buzz came from another device before the amplifier.

Sep 05, 2015 | Behringer Xenyx 1202 12-input 2-bus Mixer...

1 Answer

Only humming or buzzing , no music or sound


Try different cables. That would be the most simple and cheapest fix.

May 27, 2014 | Roland Kc-150 65-watt Keyboard Amplifier...

1 Answer

How to fix ground buzz


Try using a di box with ground lift switch

Feb 12, 2014 | Martin Thinline 332 Plus Piezo Acoustic...

1 Answer

Monitor buzz


its poor insulation on your power supply

Aug 27, 2012 | Music

1 Answer

Whenever I touch anything metal on my guitar it buzzes, including the metal part of the 3-way switch, I have a Dean Vendetta, how do I fix this?


You have a grounding problem ! You need to BOND (electrically connect) all the metal parts including the cases and shafts of the volume controls and switches. OFTEN the cavity with the controls are painted with a conductive paint such as Aquadag or NicklePrint which is then bonded to the barrel part of the jack you plug into. Note, while this helps the buzzing due to touching the metaal parts, it will not eliminate hum if you get your guitar pickups into a magnetic field from transformers, etc.

Jan 22, 2011 | Dean Vendetta Revenge Electric Guitar

1 Answer

Our Yamaha clavinova CLP-115 is buzzing, even with


Without power to the unit no sound should be generated. Make sure there are no other connections.

MAYBE you have a wall transformer behind it that is buzzing. MANY wall transformers develop buzz.

Another source is flourescent lights and even some of the low voltage halogens have noisy transformers in the base.

Nov 17, 2009 | Yamaha Music

1 Answer

Joe Pass, Ground buzz, changed over everything, still have buzz


Hi there. If the amp buzzes with nothing plugged in, it's the amp. I've found that most hum comes from instruments, not the amp.
Thanks
Paul

Jun 05, 2009 | Music

1 Answer

I have a mackie 32.8


Hi there. Disconnect all auxiliary inputs. Still buzzing? Internal problem. Not buzzing? External problem.
Thanks
Paul

May 27, 2009 | Mackie 1604 Vlz3 16 Channel Mixer

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