Acoustic guitar amp

[sreten]

Hi,

FWIW "homebuilt" music kit is hardly ever as as good a purpose built
stuff, as it usually misses out connectivity options, and the circuitry
used for live music amplifiers has (should have) little to do with "hi-fi".

The main differenced between an acoustic and electric guitar amplifier :

1) The speakers are not built / chosen for distortion characteristics.
2) The preamplifier is not built for distortion, can have a piezo input.
3) Has microphone inputs for miked up guitar and vocals.
4) Acoustic amplifiers are expected to reproduce voice also.
5) Can have phantom powered mic inputs
6) Facilities for controlling acoustic guitar feedback.
7) Different EQ and effects - suited to purpose.
8) Channel handling is different - again suited to purpose.
9) Built in compression to prevent power amplifier clipping.

Research the models available - I think you'll find building an even
approximate equivalent a daunting prospect - also note that the
reliability issues are very real - building for hard use is not easy.

Check out the various approaches here :

http://www.gear4music.com/Guitar_Amp...stic_Amps.html

I think you'd have difficulty bettering the ACX450 from BEHRINGER .

/sreten.

[Leonka]

Hey! As I'd like to start building an acoustic guiatar amp for my new CORT CJ-10X I'm wondering about the progress of this post writer project....how was the work? have you got good results?....

Thanks a lot

Leo

ps: I've already built a Vox AC30 for my electric guitar but one of the few thing I know is that i say generally, dark tube amps are not the best choice for bright acoustic guitar, so what do you say/suggest?...

[vglaso]

the requirements to make a decent sounding amp for an acoustic guitar... with (perhaps) a piezo pickup... are entirely different than what a 'punk-rock'... shredder guitar player is looking for. Everyone compromises. Impedance matters!. It IS easier to buy older equiptment and make it work for what you want it to do. Cheaper too... isn't there a design using one fet to match impedence for an (ac-30)(any tube amp) to an acoustic ... and still maintain the 'brightness'... and sound of an acoustic guitar?. I've forgotten. It's a 9 volt supplied 'impedance matching' circuit. -

[Leonka]

One of the few things I've understood about acoustic amps is that are very very different from punk-rock vox-fender-marshall-orange like amps in fact I'm here asking for schematics and also cabinet tips (wood, size and kind), I've said I've built a vox only to say that i'm quite skilled i soldering and wood working for the cabinet but, again, I'm here for finding the way to follow as i don't know it.

Reading various posts it seems that the Kreuser pre should be a good choice but I have no schems, and what about power stage? and again what kind of cab? open or closed? dimension and cab shape?

Thanks to all

Leo