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Permalink Reply by Ice Bob on February 5, 2011 at 3:55am

turn it way down little amps distort eazy if that dont work try a less powerful pickup some pickups are to hot for clean playing. its hard to get a clean sound and a loud level out of 9volt amps 

 

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Permalink Reply by Tom Caneschi aka cbg tom on February 5, 2011 at 4:17am

Hi Bob,I'm using a piezo and have to turn it down so low it's not worth having it on board. Somewhere I heard egg crate

foam like studios use on walls may help anyone know about that. 

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Permalink Reply by Tom Caneschi aka cbg tom on February 5, 2011 at 5:20am

Just realized I had a real senior moment I have a feedback problem not distortion I love distortion.

Sorry my bad !!! 

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Permalink Reply by Dave Onastik on February 5, 2011 at 8:57am

Check out this thread:

 

http://www.cigarboxnation.com/forum/topics/builtin-amp

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Permalink Reply by Tom Caneschi aka cbg tom on February 8, 2011 at 10:08am

Thanks for the ideas

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Permalink Reply by Henry Dervaric on February 10, 2011 at 6:20am

Do you have any video?

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Permalink Reply by Tom Caneschi aka cbg tom on February 10, 2011 at 10:12am

No it was done for a customer I told him to take it and I

would try to get some ideas to correct it...

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Permalink Reply by Don Thompson on February 10, 2011 at 11:33am

I have to assume you are using a piezo hence the feedback problems. Wouldn't happen with a magnetic.

Don

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Permalink Reply by Tom Caneschi aka cbg tom on February 10, 2011 at 12:13pm

Yes  using a piezo for the on board amp but using a single coil pu for external amp.

can that be used for both ? will I need a switch ?

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Permalink Reply by David L. on February 10, 2011 at 12:33pm

When I add an onboard amp I just wire it to the output jack so it plays whatever is able to go out to an external amp. So if you then wire piezo and magnetic via a 3 way to the output jack you get the output options of mag/both/piezo and if the input for the onboard amp is wired to the output jack it will play these options.  In my limited experience I have found piezo discs will feedback so you can either only use the magnetic pup, make the buyer aware to only use the magnetic with the internal amp (or expect to only play it low volume on piezo) or add one of the passive piezo preamps between the piezo and 3 way switch to tame it (works even better if you can add a piezo rod instead of a disc). Also what did you use as the onboard amp? The LM386 chip seems more troublesome with feedback than some of the ones that don't have an overdrive when it is fitted onboard.

 

David

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Permalink Reply by Tom Caneschi aka cbg tom on February 10, 2011 at 12:56pm

Don't know what the chip is for sure but it does have a overdrive that can be 

cut  by pulling a jumper out ... Thanks for everyones input  now I  have a couple

of different ways to attempt to resolve it. Ill do a follow up post soon....

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