Schematics > Audio > FET Audio Mixer
FET Audio MixerThis simple circuit mixes two or more channels into one channel (eg. stereo
into mono). The circuit can mix as many or as few channels as you like and
consumes very little power. The mixer is shown with two inputs, but you can add
as many as you want by just duplicating the "sections" which are clearly visible
on the schematic.
Schematic
Parts
| Part |
Total Qty. |
Description |
| R1, R3 |
2 |
10K Pot |
| R2, R4 |
2 |
100K 1/4 W Resistor |
| R5 |
1 |
6.8K 1/4 W Resistor |
| C1, C2, C3 |
3 |
0.1uF Capacitor |
| Q1 |
1 |
2N3819 Junction FET |
| MISC |
1 |
Wire, Shielded (Metal) Case, Phono Or Other Plug For
Output |
Notes
1. As many or as few channels as are required can be added to the mixer. Do
this by just duplicating the input "sections" which are clearly shown on the
schematic. One version of this mixer I saw had 25 inputs!
2. A shielded case is probably needed to reduce hum and help stop
oscillations.
3. The circuit can be powered by a single 9 volt battery.
Title: FET Audio Mixer
Source: www.aaroncake.net
Published on: 2005-02-01
Reads: 712
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