Fans and Cooling System
The CQ uses a
In the unusual event that the temperature reaches 74°C, the secondary fan turns on and is clearly audible. The secondary fan turns on in response to
•primary fan failure (check its status immediately);
•high source levels for a prolonged period in hot temperatures or direct sunlight;
•driver failure.
The secondary fan turns off when the temperature decreases to 68°C.
In the highly unlikely event that the secondary fan does not keep the temperature below 85°C, the CQ automatically shuts down until AC power is removed and reapplied. If the CQ shuts down again after cooling and reapplying AC power, contact Meyer Sound for repair information.
The fans draw air in through ducts on the front of the cabinet, over the heatsinks, and out the rear of the cabinet. Since dust does not accumulate in the amplifier circuitry, its life span is increased significantly. Make sure that the air ducts are clear and that there is at least 6 inches clearance for exhaust behind the cabinet.
cooling fans
air | power |
supply
heatsinks
A foam insert filter, in combination with the entire front grill surface, acts as an air filter for the cooling system. Despite the filtering, extensive use or a dusty operating environment can allow dust to accumulate along the path of the airflow, preventing normal cooling. We recommend periodically removing the grill, filter, and amplifier module and using compressed air to clear dust from the grill, filter, fans, and heatsinks.
Rigging
The maximum recommended load for a CQ with air- craft pan fittings is 500 lb (228kg). This working load is
rigging brackets
(two on top, two on bottom)
Handles are for carrying only.
!Do not use them for rigging!
There are four types of interchangeable rigging brackets, each fastened by six Phillips screws:
•aircraft pan fittings (ring and stud)
•
•
•blank plates (if no rigging brackets are requested)
NOTE: Units with nut plates are rated for the weight of one cabinet only.
Rigging load ratings assume a straight tensile pull and that the cabinet is in new condition with aircraft pan fittings. If these conditions are not met, the load ratings can be reduced significantly. Load ratings can also be reduced by age, wear, and damage. It is important to inspect the rigging hardware regularly and replace worn or damaged components immediately.
The standard model should not be installed outdoors without weather protection. The cabinet, exposed electronic circuitry, and drivers can all receive weather protection treatment that allows the unit to be used safely in wet conditions. Contact Meyer Sound for information about
NOTE: All Meyer Sound products must be used in accordance with local, state, federal, and industry regulations. It is the owner’s and/or user’s responsibility to evaluate the reliability of any rigging method for their application. Rigging should be done only by experienced professionals.
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