MustangWorks.com : Ford Forums - View Single Post

zplan · 01-16-2003, 11:27 AM

My Mach 460 sound system occasionally has a high pitched buzz sound in speakers. It goes up in pitch with engine RPMs , then quits beyond ~2000 RPM. Also hear a "pop" sound in the speakers when I step on the brake pedal. Neither problem happens all of the time, but both always occur together. The volume control has no effect on the loudness of these sounds. Dealership says the amp is bad, but can be easily repaired for a small fortune. Doe anyone know the cure? Where can I get schematics/wiring diagrams for the amp(s)?

01-16-2003, 11:27 AM	#1
zplan Registered Member Join Date: Jan 2003 Posts: 1	Speaker buzzzzzz! My Mach 460 sound system occasionally has a high pitched buzz sound in speakers. It goes up in pitch with engine RPMs , then quits beyond ~2000 RPM. Also hear a "pop" sound in the speakers when I step on the brake pedal. Neither problem happens all of the time, but both always occur together. The volume control has no effect on the loudness of these sounds. Dealership says the amp is bad, but can be easily repaired for a small fortune. Doe anyone know the cure? Where can I get schematics/wiring diagrams for the amp(s)?