Wiring a Twincaster for a speaker output

[estch71]

Hey,

I just built the Twincaster pedal:


From this schematic:



and was wondering how I would convert the output to power a cabinet - 8 ohms.  Also, I think it's a little fuzzy so, I'm thinking that a couple of cap changes might relieve that?

[dwmorrin]

The quickest, easiest thing to do would be to tack a LM386 circuit to the output.
http://beavisaudio.com/bboard/projects/bbp_CigaretteAmp_Rev1_1.pdf
You need output impedance of less than 8Ω to drive an 8Ω speaker, and the output device has to handle the power, even if it's only a fraction of a watt.
The 386 is the simplest thing that puts all that into 1 little chip.

[estch71]

The quickest, easiest thing to do would be to tack a LM386 circuit to the output.
http://beavisaudio.com/bboard/projects/bbp_CigaretteAmp_Rev1_1.pdf
You need output impedance of less than 8Ω to drive an 8Ω speaker, and the output device has to handle the power, even if it's only a fraction of a watt.
The 386 is the simplest thing that puts all that into 1 little chip.

Amazing.  I didn't think of the smoky amp.  Going to build this tomorrow.  Thanks for the info!