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Old 07-01-2019, 09:33 AM
zeeway zeeway is offline
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Default Emerald X20 Feedback Buster

At the risk of committing heresy, I ask this question: does anyone know of a soundhole cover that works on an X20? Every once in a while, I have feedback issues while playing amplified, and I wonder has anyone made/or discovered a soundhole cover that would fit the X20?
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Last edited by zeeway; 07-01-2019 at 01:46 PM.
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Old 07-01-2019, 11:41 AM
GuitarLuva GuitarLuva is offline
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I doubt that you will find anything in the aftermarket that would fill the sound hole on an Emerald. You're probably better off trying to fab something up yourself. Might be worth sending Emerald an email to see if they can incorporate something like this in the future. Out of curiosity, what kind of pickup system do you have? I have a funny feeling you're going to say K&K.
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Old 07-01-2019, 12:07 PM
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Good suggestion GutarLuva. I would think that somewhere along the line Emerald would be accessorizing with such items as sound hole covers, tuners, etc.
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Old 07-01-2019, 12:38 PM
Flanders Flanders is offline
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A few years ago I wrote to Alistair about this issue and he said he was in the process of designing a cover, but it never happened. I use a soft rubber ball (think Nerf ball) and wedge it in the sound hole. A tad unsightly, but works.
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Old 07-01-2019, 12:44 PM
Earl49 Earl49 is offline
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Way to think out of the box, Flanders. I would guess that a closed-cell rubber ball (or one with a surface skin on it) would work better than an acoustically transparent open cell foam ball. But whatever actually works..... It probably doesn't take much to avoid feedback.
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Old 07-01-2019, 01:15 PM
zeeway zeeway is offline
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Quote:
Originally Posted by GuitarLuva View Post
I doubt that you will find anything in the aftermarket that would fill the sound hole on an Emerald. You're probably better off trying to fab something up yourself. Might be worth sending Emerald an email to see if they can incorporate something like this in the future. Out of curiosity, what kind of pickup system do you have? I have a funny feeling you're going to say K&K.
You must have ESP...yep, a K&K.
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Old 07-01-2019, 01:20 PM
zeeway zeeway is offline
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Quote:
Originally Posted by Flanders View Post
A few years ago I wrote to Alistair about this issue and he said he was in the process of designing a cover, but it never happened. I use a soft rubber ball (think Nerf ball) and wedge it in the sound hole. A tad unsightly, but works.
Thanks. Okay, I’m off to look for Nerf-like balls.
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Old 07-01-2019, 02:53 PM
GuitarLuva GuitarLuva is offline
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Quote:
Originally Posted by zeeway View Post
You must have ESP...yep, a K&K.
I do have ESP! There's other things you can do beside a sound hole cover to help fight feedback. Adjust the positon of your monitors (if you use any). Also try cutting low frequencies around 110 Hz. I don't know what your full setup is but generally speaking K&K pickups don't have the best feedback rejection.
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Old 07-01-2019, 06:03 PM
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I don't have the problem. But, if I did, I'd get a piece of sponge and cut it about a 1/4" oversized, cut out some grooves to fit the guitar, and tell everyone about my great idea.

My grandson has great ideas--if only I'd do those..........................
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Old 07-01-2019, 06:52 PM
jdinco jdinco is offline
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Quote:
Originally Posted by zeeway View Post
You must have ESP...yep, a K&K.
I have ESPN....
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Old 07-01-2019, 07:41 PM
zeeway zeeway is offline
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I have ESPN....
Close enough
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Old 03-07-2021, 11:17 AM
tryout tryout is offline
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Has anyone tried 3D printing an X20 feedback buster?
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Old 03-07-2021, 04:06 PM
mountainmaster mountainmaster is offline
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One thing I tried that didn't work is plastic kitchen foil.

Easy to apply on a gloss finish, but too thin to stop the feedback. And it made a buzzing sound when I hit the low E.
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Old 03-08-2021, 05:43 AM
zeeway zeeway is offline
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I wound up getting some dark gray foam rubber matting about 1/2 inch thick, and cutting a strip about three inches in height. I rolled it up and stuck it in the soundhole. That looks ugly but is very effective. Tonedexter has come out with new software, that is effective in finding the feedback frequencies, and allowing control of them directly. so I have not needed my "invention" lately.
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Old 03-09-2021, 03:22 PM
Matt_Ellis Matt_Ellis is offline
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Hi,

I ended up buying this from Amazon:

LMC Products Foam Ball Toy Football, The Perfect Sports Toy for Party Supplies, Mini Football for Kids. 3-Pack, Brown. Foamballs are 4.75" x 3"

I cut the little football not quite in half lengthwise, then I used sandpaper to get the cut surface flat a reasonable possible. Took my big black sharpie and made the cut surface black.

This fits quite well in my X20 soundhole, but haven't gotten a chance to really crank it up to check feedback resistance. It's on my list of things to do once my downstairs neighbor is out of the house

Matt
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