This is a mixer circuit which can mix stereo sources. The component values for the input circuit varies according to the type of
instrument connected to it. Table 6.0 shows the necessary component values for every input instrument. You will notice that if you
design the input for a tape instrument you don't need the A1/A2 IC and the discrete components around it. You simply connect the source line to the capacitor C4 or C10.
Printed Circuit and Parts Placement Layout (Input preamp module)
Printed Circuit Layout (Main mixer module)
Parts Placement Layout (Main mixer module)
Electronic Circuits volume 1.0 - Circuit Nr. 6
The complete data of the electronic circuit described above can be found in the following book and is available from Amazon.com.
Click on the image to view the book.