Message from brent
I've built this with a few little changes..
By accident, I used 2k2 resistors instead of 22k resistors..
Two of the inputs don't have pots on them..
I'm using a 3904 transistor..
Two of the inputs are from my iPod.. the third is the mono input from my airplane... The output is to my airplane headset..
The music sounds great, but I cant turn up the volume much..
The audio from the airplane is really finicky... If I adjust the pot too much in either direction all of the audio goes away..
If I turn up the input volume too much (from either source) there is quite a bit of clipping..
Any one have any idea how I can fix it?
Otherwise I am loving it!!
About the clipping problem, I had the same problem, so I putted a 100k resistor before that 5uF capacitor that enters the circuit and it works like a charm...Of course that it lowered the volume, cuz that's all about , the signal coming from the inputs is to high, so that 100k resistor attenuates a little bit that mixed inputs before it enters the circuit.
Thanks for the schematic, it's amazing!