8445 or 8465 meaning 8 input channel and 450 or 650 Watts Output for InterM Powered Mixer. This schematic diagram is right choise for you to make cloning audio.
Appearance of the Powered Mixer in THIS LINK.
Following the edited schematic diagram of 8445 or 8465 mixer:
Firstly stage of this circuit is balance amplifier by Q101 and Q102 ( 2SA2400 ). Then the output of this balance amplifier going to OPAMP that using NJM2068D.
The OPAMP is famous for high performance and Very low noise ( DATASHEETS ).
Next step is TONE CONTROL. Its using 3 potensiometer for controlling three center of freq: HI, MID, LOW. All Potensio are using B50K.
After Tone control block, audio signal goes to Pot MONITOR, Pot FADER and Peak Control circuit.
Audio signal from Pot Fader will amplify by OPAMP and after amplification will be split as Stereo signal.
This Preamp need symmetrical Supply 15VDC.
