Need help?Do you have a question about the Marantz 9 and is the answer not in the manual?
Describes signal path through phase inverter, driver, and output stages of the amplifier.
Explains V1A as cathode follower or amplifier and its role in center channel speaker arrangements.
Details the triode voltage amplifier pre-driver and its coupling to the driver-inverter.
Details push-pull parallel output tubes, triode/tetrode modes, and bias adjustment.
Explains the test circuit for monitoring output stage voltage and connections for balance tests.
Procedure for adjusting cathode current for output tubes V5-V8 using test meter and potentiometers.
Procedure for adjusting AC balance using test meter and R28 potentiometer for proper deflection.
Table listing DC and Fil voltages for various tubes and pins.
Table listing resistance values for various tubes and pins.
To Next Page
General
