Do you have a question about the McIntosh MC420M, MC431M and is the answer not in the manual?
Read, retain, heed, and follow all instructions and warnings for safe operation.
Avoid rain/moisture, prevent liquid entry, use correct power sources.
Refer damage to qualified personnel; heed hearing protection warning.
Familiarize with parts, use caution with wiring, shut off power, wear eyewear.
Explains floating ground, chassis connection, and noise reduction techniques.
Explains the circuit protecting speakers from clipping distortion.
Details the smart protection against overheating and fan control.
How to combine channels for increased output power.
Guidelines for power cable and explanation of the circuit breaker.
Procedures for mounting directly to frame or to an insulated surface.
Warnings about connecting speaker negative terminals to chassis.