AudioBahn A18001DJ - Manual (Page 12)

Planning Your System
Before beginning the installation, consider the following:
a. If you plan to expand your system by adding other components sometime in the
future, ensure that adequate space is left, and cooling requirements are met.
If your radio/source is equipped with Pre-Amp outputs, it is possible to utilize
them to drive an Amplifier and connecting (Amplifier) to the 2 rear speakers.
Then, use the built-in power of your radio to drive the 2 front speakers.
NOTE:
DISTORTION LEVEL IS CONSIDERABLY LOWER FROM PRE-AMP (LOW LEVEL) OUTPUTS, THAN
SPEAKER (HIGH LEVEL) OUTPUTS.
b. Are your components matched? The RMS power rating of your speakers must
be equal or greater than the Amplifier’s. They also must be 1-8 Ohms
impedance (this information is normally printed on the speaker magnet).
c. Consider both the length of your leads, and routing when determining the mounting
location. Pre-Amp input Jacks require a length of high quality shielded male to male
RCA patch cord.
Mounting Your System
The mounting position of your Amplifier will have great effect on its ability to dissipate the heat generated
during normal operation. It has an ample heat sink for heat dissipation, and also is designed with a thermal
shut-down (for heat protection) circuit, having enough air directed over the cooling fins will improve heat dis-
sipation dramatically. DO NOT enclose the amplifier in a small box or cover it so that air can not flow around
the fins. Temperatures in car trunks have been measured as high as (155˚F) in the summer time. Since the
thermal shut-down point for the Amplifier is (158˚F) it is easy to see that it must be mounted for maximum
cooling capability. To achieve the maximum advantage of convection air flow in an enclosed trunk, mount the
amplifier in a horizontal position. Cooling requirements are considerably relaxed when mounting inside the
passenger compartment since the driver will not allow temperatures to reach a critical point. Floor mounting
under the seat is usually satisfactory as long as there is at least 1 inch (2.54cm) above the Amplifier’s fins for
ventilation.
a. Select a sutable location that is convenient for mounting, accessible for wiring and has
ample room for air circulation and cooling.
b. Use the amplifier as a template to mark the mounting holes. Remove the amplifier and
drill holes. Use extreme caution. Inspect underneath the surfaces before drilling!
c. Secure the Amplifier using the screws provided.
CAUTION: Before connecting any wires to the amplifier, disconnect the ground lead from
the battery. Leave the ground lead disconnected until you are done wiring the
amplifier.
PLANNING/MOUNTING YOUR SYSTEM
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