6
ART300A Service Manual
Safety First!
Before connecting and using the equipment, please read the Quick-Start Guide
carefully and keep it for future reference.
Warning
This equipment has been designed to be installed by qualifi ed professionals only! There
are many factors to be considered when installing professional sound reinforcement
systems, including mechanical and electrical considerations, as well as acoustic
coverage and performance. Mackie Industrial strongly recommends that this equipment
be installed only by a professional sound installer or contractor.
1. Never install, connect, or disconnect the unit with the power supply on.
2. Before powering up the speaker, make sure the voltage select switch
corresponds to the AC Voltage supply.
3. Make sure the safety ground on the power cord is properly grounded.
4. To prevent the risk of electric shock, never open the unit. There are no user
serviceable parts inside.
5. To ensure normal cooling of the amplifi er, make sure the unit is well ventilated.
Avoid exposure to direct sunlight or proximity to any heat source, dust, or
dampness.
Installation
A 1-3/8" (35mm) socket is provided in the bottom of the cabinet for mounting the
loudspeaker on a speaker stand.
The speaker can be suspended with approved rigging hardware. Always use at least two
M10 threaded inserts located on opposite sides of the enclosure. The speaker must be
positioned so that the weight of the enclosure is equally distributed over the two inserts.
Warning
Never attempt to suspend the ART Series loudspeakers by their handles. Consult a
professional rigger or structural engineer prior to suspending loudspeakers from a
structure not intended for that use. Always know the working load limit of the structure
supporting the loudspeaker array. Always make sure that the rigging hardware minimum
rating is at least fi ve times the actual load.