9
PRECAUTIONS
Be sure that power to the CPA650 is turned off when making all connections. High voltages can be present at the speaker terminals, and
static pops or broken ground connections on cables can cause speaker damage.
Use speaker wire of sufficient gauge to prevent power loss and damping factor reduction. Larger size wire has a lower resistance and
permits longer cable runs. Use 16 or 18 gauge wire for cable runs up to 20 feet. For runs 20~80 feet, use 14 gauge wire. For runs longer
than 80 feet, use 10 or 12 gauge wire.
Never connect the red (+) speaker binding posts directly together. This can result in internal damage to the amplifier.
Before turning power on, set the CPA650 level controls to the fully counter-clockwise (off) position.
The CPA650 is designed to be used in a standard 19" equipment rack or on a flat surface. The CPA650 has heat-sinks on each side panel
for passive cooling. Do not block the heat-sinks in any way. When mounting the CPA650 in a rack, leave at least one rack-space above
and below the amplifier to allow proper air flow. Do not use a CPA650 in a closed rack. In situations with high ambient temperatures,
particularly where multiple amplifiers are mounted in the same rack, it may be advisable to use fans to cool the rack. Best results are
attained if the fans blow cool air in from the bottom of the rack, up through the amplifiers, expelling the heated air at the top.
If the green LED indicator next to the power switch does not light when the power switch is turned on, turn the power switch off and check
the AC power cord connections. If the power cord connections are complete, but the indicator still does not light, disconnect the CPA650
from AC power and check the AC fuse. If the fuse needs to be replaced, use the same value and type fuse only. If the AC fuse continues
to fail, the amplifier may require service.
Once power is turned on, slowly advance the level controls clockwise. If no sound is heard, turn the level controls back to their original
counter-clockwise position and check to confirm there is an input signal. Also check for proper wiring at all input and output connections,
and verify that the cables being used are undamaged and are in good condition.
If the CPA650 should require service, please contact Biamp Systems Customer Service at 1-800-826-1457 or (503) 641-7287.
(11 pages)
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