Audiobahn A18001DJ User Manual download pdf (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 Amplier and connecting (Amplier) 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 Amplier’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 Amplier 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 ns will improve heat dis-

sipation dramatically. DO NOT enclose the amplier in a small box or cover it so that air can not ow around

the ns. Temperatures in car trunks have been measured as high as (155˚F) in the summer time. Since the

thermal shut-down point for the Amplier 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 ow in an enclosed trunk, mount the

amplier 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 Amplier’s ns 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 amplier as a template to mark the mounting holes. Remove the amplier and

drill holes. Use extreme caution. Inspect underneath the surfaces before drilling!

c. Secure the Amplier using the screws provided.

CAUTION: Before connecting any wires to the amplier, disconnect the ground lead from

the battery. Leave the ground lead disconnected until you are done wiring the

amplier.

PLANNING/MOUNTING YOUR SYSTEM

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Audiobahn A18001DJ User Manual Page 12