Hello. Not sure which group to post this in exactly. I am a beginner at all of this so this might be an obvious question.
I was thinking of building a CBG with a build in amp. The wiring would be super simple, just getting one of CBGitty's amp kits and wiring the input to the pickup, but my question is this: would this thing just explode with feedback because the amp is so close to the pickup? It would right? Is there some way of making this work? I have seen commercial guitars with built in amps so it must be possible.
Thanks.
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There is a difference between an amp and a pre-amp. You need to be more specific as to what you are trying to achieve. If you really mean amp,Honeytone makes one with a built in belt clip.You can be a walking rock and roll band,until your 9 volt battery runs down.(;-D)
I think you are talking about a setup similar to the Pignose PGG-200 guitar--> Pignose Guitar
It's a pretty cool six string with a Pignose portable amp installed in the guitar body.
If you are planning on using a mag pickup, I think you might get away with it. If you're thinking Piezo, that may be a problem. Bench testing might be the best way to see if it can be done with common off the shelf parts.
Nothing to lose in trying it and you will learn some things in the process. That's one of the best parts of designing and building your own guitars.
Thanks. That pignose is exactly what I was thinking of. I suppose potting the pickup would be advisable?
Potting the pickup (piezo) is pretty much SOP, so "yes"
I would give the pickup plenty of wire length so you can move it around a lot. Don't be afraid to move the pickup all over the box in search of that non-feedback location. I would even try it on the outside (sides, back) of the box just to gauge the response.
I think you can make this work, but it will take some patience in pickup positioning.
Another thing to consider is the speaker itself. It may help to reduce feedback if the speaker is not mounted firmly against the box lid. That would reduce the speaker vibration induced into the lid and thus into the piezo. Maybe s little foam to isolate the speaker a bit.
A lot can be learned from this project. Keep us posted
The ones I have seen are solid body, not acoustic, with mag not piezo pickups. there was another thread here-abouts that discussed the problem with feedback when the amp and piezo are in the same box.
i have built many built in amp guitars . the biggest tip i have is to keep the speaker as far away from the mag pickup as you can . you will still get some feedback when cranked and on overdrive .. but it is controllable and usable and can even be fun to work with .
other options are copper sheilding etc etc . but you can get away with it without it , if you have the space .
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