is there any instructions on how to make a 9v amp that goes into the cbg?
I've looked at Gitty but a bit pricey when you add the cost of shipping too.
I mention it to chicken john but has not got back to me on that.
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"instructions" for it ? not really that i know of .... but you can put any 9 volt amp in a guit pretty much ,
i have done many . and really it's as basic and installing pre wired pots and pups . drill the holes to match the pots , speaker etc . but ... each board will be different .
a few basic hints ill share is .. keep the speaker as far away from the pup as you can to avoid feedback issues .
consider inverting the speaker facing into your box and mounting it on the outside blowing in .. this will make the body act as a bass cabinet . (most 9volt amps sound tinny ) this will add some bass .
you can even take apart a mini amp and re-fit the guts into the guitar . rip out the " in " jack and solder 2 wires going to your guitar out jack . easy peasy . (you'll even have a pre made drilling template for the controls .)
and boom! , bob's your gay aunt . ;-)
Really? I just thought Bob had an allergy to women
it's gotta be true .. i heard it on the internet from a guy that knows the dude , whose daughter looked after bobs grandmothers goldfish .
good idea I never thought of that.
cheap as chips @ £12
thanks mr pick!
yer welcome ;-)
you don't even have to rip out the jack .. just solder to its terminals .
and by "rip" i mean "gently de-solder and remove " lol.
or leave it as is and add a mini patch cord as i did here .
then it is a separate unit and you can plug the guitar into itself or another amp .
but you can still run both the other way too , just by turning your onboard amp on or off .. you can even run both at the same time that way too .. which makes for some feedback boost fun .
The components needed to make your own 9v guitar amp are rather cheap. Here in Canada, we used to have Radio Shack, which had a wide assortment of parts for that purpose. Unfortunately, RS left Canada, and left us with a store called "The Source", which only caters to everyday electronics like iPhones, cameras, and stereo accessories.
I found all the parts needed on Ebay. Most of the suppliers are in the land of the Red Sun. But shipping is usually free, although it takes up to 3 weeks to get a parcel.
Here is a schematic for one version of amp I make regularly:
LM386-N1 Op Amp IC chip
8-pin IC socket
10K-B Volume potentiomenter
10uF electrolytic capacitor in either 16v or 25v
220uF electrolytic capacitor in same voltage
0.1uF ceramic disc capacitor
330 ohm 1/4 watt resistor
LED light
9 volt battery clip
Perforated circuit board
SPDT on/on toggle switch
This circuit with the LM386 IC is rated at 325mW (1/4 to 1/3 watt) and drives most any 8 ohm speaker load. You can use two 4 ohm speakers in series to create an 8 ohm load. Or two 16 ohm speakers in parallel to get the 8 ohm load.
I often add to this amp circuit a line-out switch & jack, so the amp can be connected to an external speaker cabinet. This amp will drive a 2x12 cab at bedroom volume levels, and sounds awesome.
I just made one of these circuits yesterday and made another cigar box amplifier. The entire circuit board measured about 32mmx32mm.
You might like the TDA2822m IC. The chips have a lower cut-off voltage than an LM386 so you get a bit more battery time.
I build modified Tube Cricket amps running at 9v using 1T4 mini tubes in place of the 12AU7 with the TDA2822m in the power amp block.
Swapping the single 9v battery for six 1.5v AA batteries also extends the play time too.
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