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Protection Circuits
There are several protection mechanisms designed into the SRM1801 to safeguard the subwoofers and amplifiers from inadvertent damage.
CAUTION: The protection circuits are
designed to protect the subwoofers under
reasonable and sensible conditions. Should
you choose to ignore the warning signs
(i.e., frequent OL LED indications, excessive distortion), you can still damage the speakers in the SRM1801 by overdriving them past the point of amplifier clipping. Such damage is beyond the scope of the warranty.
Limiting
The driver has its own compression circuit, which helps protect it from damaging transient peaks. The compressor is designed to be transparent and is not noticeable under normal operating conditions.
Placement
The SRM1801 subwoofer is designed to sit on the floor or stage. It is not designed to be
When
WARNING: The cabinet has no rigging points and is not suitable for rigging. NEVER attempt to suspend the SRM1801 by its handles.
As with any powered components, protect them from moisture and extreme cold and follow the other Care and Maintenance suggestions below.
Overexcursion Protection
A 12 dB/octave
Thermal Protection
All amplifiers produce heat. The SRM1801 is designed to be efficient both electrically and thermally.
The amplifier module is mounted on a large heatsink, which is cooled by convection where cool air is drawn over the rear panel, carrying the heat away. In order for this convection cooling to work efficiently, it is important to provide adequate airspace behind the subwoofer. When you position the SRM1801, we recommend leaving at least six inches of air space behind it.
If for some reason the internal temperature gets too hot, a
Care and Maintenance
Your Mackie subwoofers will provide many years of reliable service if you follow these guidelines:
•Avoid exposing the subwoofers to moisture. If they are set up outdoors, be sure they are under cover if rain is expected.
•Avoid exposure to extreme cold (below freezing temperatures). If you must operate the subwoofers in a cold environment, warm up the voice coils slowly by sending a
•Use a dry cloth to clean the cabinets. Only do this when the power is turned off. Avoid getting moisture into any of the openings of the cabi- net, particularly where the driver is located.
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