EAW CAZ1400, CAZ2500, CAZ800 AC POWER REQUIREMENTS, THERMAL CONSIDERATIONS, MAINTENANCE, RACK MOUNTING

AC POWER REQUIREMENTS

RACK MOUNTING

The ampliﬁer's power cord should be plugged into an AC outlet properly conﬁgured with the voltage required for your particular model.

Be sure the AC outlet can supply enough current to allow full power operation of all the ampliﬁers plugged into it. The outlet should be a three-prong socket that matches the power cord.

WARNING: Bypassing the plug’s safety ground pin can be dangerous. Don’t do it!

The AC current demand of an ampliﬁer varies depending on several factors, including the load impedance, the crest factor, and the duty cycle of the program material. Under typical conditions reproducing rock music where musical peaks are just below clipping, the ampliﬁers require the following average currents.

CAZ800 = 5 A

CAZ1400 = 7 A

CAZ2500 =10 A

It is recommended that a stiff supply of AC power be used because the ampliﬁer places high current demands on the AC line. The more power that is available on the line, the louder the ampliﬁer will play and the more peak output power will be available for cleaner, punchier bass.

If you have more than one ampliﬁer sharing an AC outlet, you should avoid turning them all on at the same time. Rather, sequence them on, one at a time, to prevent popping the circuit breaker (due to in-rush current).

THERMAL CONSIDERATIONS

The power ampliﬁer is fan cooled. Air is drawn through the rear panel vents, to cool down the ampliﬁer heatsinks, and then expelled through the front panel vents.

When installing, be sure to allow sufﬁcient air space around the front and rear of the ampliﬁer for adequate cooling for the heatsinks. Leave at least one rack space above and below, and at least 6 inches behind and in front of the chassis to allow proper ventilation.

If the ampliﬁer should overheat, a thermal switch turns off the power ampliﬁer, allowing the heatsink to cool down. Once the ampliﬁer has cooled to a safe operating temperature, the thermal switch resets and reactivates the ampliﬁer. If this should occur, identify the cause of the problem and take corrective action. For example:

•Provide better ventilation

•Install a fan in the rack to move more air

•Make sure the ampliﬁer is not overloaded with too low of a load impedance or by a short circuit on the speaker line

The CAZ ampliﬁers are designed to be mounted in a standard rack. They require two rack spaces (2U = 3.5”). They also require 15.75” depth inside the rack, including the rear support brackets. When designing your rack, put the heavier items at the bottom and the lighter items toward the top.

Secure the front panel of the ampliﬁer to the front of the rack using four screws with soft washers to prevent scratching the panel. In addition, because of the weight of the ampliﬁer, you must secure the rear support brackets of the ampliﬁer to the back of the rack. You could use a support rail or shelf across the back of the rack, or angle brackets attached between the rear support rails and the rear rails of the rack. This is recommended for all components mounted in a rack that is going to be moved frequently.

MAINTENANCE

Usually, your ampliﬁer will not require regular maintenance for normal use. However, you can do several things to keep it in good operating and cosmetic condition.

•Testing: Periodically test your system for proper performance. A simple test is to play a CD through it using well-deﬁned, articulate, wide-range program material. Listen to ensure all drivers are working properly and for any evidence of distortion or other extraneous sounds. Test at several volume levels: very low, normal, and high.

•Cleaning: Use only a clean dry cloth to dust off and clean the surface. Turn off the power to the ampliﬁer while you do this.

8 – CAZ Series