5 years ago#1
Morbuzaan
Fresh Member
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Forum: 1
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When I turn the tone control up on my guitar, my crate amp feeds back really badly. Any ideas why this is happening and how I can make it stop?

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5 years ago#2
Stringfellow
Silver Member
Blogs: 7
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Votes: 4

I found this explanation, which I hope may help you understand why you have feedback, and how to possibly fix it:

It's easy to forget what a wonderfully expressive instrument the electric guitar is. Oh well, shredding won't last forever.

Intentional feedback is an important element of the electric guitar sound (which by the way, you can never get from a plug-in).

To get feedback, you need to turn the amp up, not necessarily all the way to eleven, but far enough so that when you hold the guitar near the speakers, the sound from the speakers makes the strings vibrate, which reinforces the signal from the guitar. Feedback is controlled through the position of the guitar, damping the strings with the edge of the right hand, and subtle left-hand finger pressure.

But some guitars feed back uncontrollably causing a fierce whistle rather than anything you could possibly call an expressive effect. What causes this?

The answer is that the coil of the pickup is, or has become, microphonic.

Coils degrade over time. Even without mistreatment, the lacquer that insulates adjacent turns of the coil will crack causing microscopic short circuits. But the worst case is when the winding isn't uniformly tight and some turns of the coil have become loose and free to vibrate. This is what causes uncontrollable feedback.

The solution to this is to 'pot' the pickups. This means dipping the pickup in hot wax so that all of the turns are physically sealed. You can easily use the power of the Internet to find out how to do this. But try it on a pickup you don't mind damaging first, not on your vintage Stratocaster.

With potted pickups, you should be able to hold your guitar as close as you like to the speakers, while you remain in control of the degree of feedback all of the time.
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5 years ago#3
joker
Fresh Member
Blogs: 0
Forum: 8
Votes: 0

My other guitar player had a feedback problem (uncontrolable at hight gain levels not necceserarily loud) It turned out to be a bad guitar cord! Learn something new everyday huh ? good luck !

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4 years ago#4
Gaijun1
Gold Member
Blogs: 0
Forum: 242
Votes: 9

Feedback
Well If You Know How To Use It a la Hendrix
It Does Wonders If You Dont Disaster Strikes

Sound Hole Pickups
Are Nosterious For Feedback And The Best Way
To Avoid That Is Dont Face your Amp

The Shrill Sound
If You Cant Control It
It Melts The Speakers Voice Coil
That Is Not Good
Briefly Is Ok

Also Guitars With Pickup Covers
Are Exactly As You Stated
Remedy Remove The Covers
Not And Easy Job And You May Not like The Sound
After Its Done

F Hole Guitars
Cover The F Holes With Painters Tape
Its Lightly Sticky And Works Ok

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4 years ago#5
tony bambrough
Guest

i would have to know what rig you got. you will be pleased to know it's not your amp that gives you feedback it's your speakers. never face your rig unless your intent on causing feedback. if you have a stack use an angle cab on top which will deflect the soundwaves above your guitar level, and try not to stand directly in front of your floor monitor (if you use one)

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4 months ago#6
Paul the skeptic
Guest

If it isn't your amp, start removing pieces of equipment one at a time. Start with your pedals. If it's not a pedal, use different patch cables or cables etc. If it is your amp, you should be able to control your feedback with a noise gate.

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4 months ago#7
kcbuck
Champion
Blogs: 8
Forum: 1,695
Votes: 35

Paul:
Do you realize that the post you answered is 3 years old? I guess it's better late than never...
Be Good,
kcbuck

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