Here is my latest project.
Its a 150WRMS guitar amplifier with treble, bass, volume and gain controls.
It also has a clean/distorted switch with distortion control pot.
Sounds very good and pretty loud too.
Sadly I managed to scrape the back panel which has a few scratches.
I have used a soft limiter for distortion. It uses transistors in the feedback loop of an op amp to round off the signal.
Its a circuit I picked up from wireless World in the 1980's.
The enclosure is a cheapie ebay one for £35.
Its a bit big for such a small amp but gives plenty of air flow.
It has a 80mm LED fan on the back to keep the amplifier cool.
It has cheapie labels on it, this needs improving.
Its a 150WRMS guitar amplifier with treble, bass, volume and gain controls.
It also has a clean/distorted switch with distortion control pot.
Sounds very good and pretty loud too.
Sadly I managed to scrape the back panel which has a few scratches.
I have used a soft limiter for distortion. It uses transistors in the feedback loop of an op amp to round off the signal.
Its a circuit I picked up from wireless World in the 1980's.
The enclosure is a cheapie ebay one for £35.
Its a bit big for such a small amp but gives plenty of air flow.
It has a 80mm LED fan on the back to keep the amplifier cool.
It has cheapie labels on it, this needs improving.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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Nice 
We deserve some gut pictures now
FWIW my very first product sold was about same technology of construction: a guitar booster pedal built on a store bought aluminum box (which I had anodized blue) with Dymo Labeller adhesive letter strips .
Oh boy, was I proud !!!!!
So I fully gather how you feel now, congratulations.
We deserve some gut pictures now
FWIW my very first product sold was about same technology of construction: a guitar booster pedal built on a store bought aluminum box (which I had anodized blue) with Dymo Labeller adhesive letter strips .
Oh boy, was I proud !!!!!
So I fully gather how you feel now, congratulations.
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