Mixer

This is just a simple four channel mixer. The case has wooden sides, an MDF base plate and a wrap around aluminum face plate. The picture on it was cut from an old health textbook. It’s a student taking a hearing test. Great headphones. There are three types of input jacks for each track.
- stereo 1/8″ jacks for plugging in walkmans, cd players, computers, etc. (uses two channels)
- RCA jacks for connecting old home stereo equipment
- 1/4″ jacks for guitar, mic, synth, etc.


Radu said:
April 27th, 2011 at 9:30am #
Great great job , i wanted to ask if you used stereo potentiometeres for stereo signal sources ? All the best from Timisoara – Romania !
Radu !
Joe said:
October 19th, 2011 at 8:57pm #
Looks great! Where did you obtain the enclosure?
casper said:
December 5th, 2011 at 11:42pm #
i made it!
Hans said:
December 24th, 2011 at 5:22pm #
can i make it up to 15 channel?
casper said:
February 16th, 2012 at 9:06pm #
@Hans:
sorry for the slow response. I’m pretty sure you can make it as high as 15 channels without any problems. This is a very standard circuit and there is LOTS of info on its capabilities and limitations out there if you have the stomach for dry engineer speak.
Nick Corbo said:
March 25th, 2012 at 6:12pm #
Looks like there’s a pot on the output, where does that go in the schematic? Near the 1 meg resistor?