Installation - US Blaster USB 7137 Owner's Manual

USB 7137 - 7138
Professional Power amplifier
FEATURES
Connection to the main supply
Offering top power, superior performance and full professional operating features in a roadworthy
compact chassis, the USB Series Bold Type are perfect for even the most demanding sound reinfor-
cement installation and touring applications. The operating instruction in this manual are for the USB
Series Bold Type power amplifiers. The operation and functions of these units are the same, except
as noted.
• Full operating features: detent volume controls ; 6,3 mm TRS jack unbalanced inputs speakon out.
• Full safety/reliability features: 2 variable speed fans for cooling; noise-free on-off; DC and thermal
overload protection; short circuit and speaker protection.
• Power ON, Clip, Signal, and Protect LED indicators for each channel.
• Roadworthy, rugged double rack space (1 U) housing
• -115V AC 60Hz, -230V AC 50Hz select switch and IEC

INSTALLATION

Inspection
Your USB Series was carefully packed at the factory in packaging designed to protect the units in ship-
ment. Before installing and using your unit, carefully examine the packaging and all contents for any
signs of physical damage that may have occurred in transit.
Rack mounting
The USB Series amplifiers are designed for standard 19" rack mounting as well as "stack" mounting
without a cabinet. Use 4 screws and washers for mounting to the front rack rails. It is also a good
idea to support the amps also in the rear, especially for mobile use where the amps will be subjected
to shocks.
Amplifier cooling
Also pay close attention to the cooling requirements. Never block the air vents in the back, side and
front of the amplifier if the load seen by amplifier is less than 4 ohms and the amplifier is being run
at high output levels. For best results, in such high output power applications you should augment
the amplifier's air flow with a rack cooling system.
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