SRM 650

The Mackie SRM 650 is a budget pro audio PA loudspeaker. Commonly found in music venues, theatres, band rehearsal rooms etc.

The unit is actively powered. This article is based on a single repair. In the unit I received all capacitors were cheap brands like CapXon and Jwco. They will likely all have to be replaced at some point, but in my case most of them were within spec. If the unit was intended for 24/7 operation I would consider replacing all electrolytic capacitors as preventive maintenance.