EXONIC EX 680M - Manual (Page 4)

- 4 -
E EX X 6 6880 0M M
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 adequate space is left, and cooling requirements are met.
b. Should you use high or low level inputs?
Your Amplifier has been designed to accept either High-Level( speaker outputs
from your radio) or Low-Level (Pre-Amp outputs from your radio) signal source.
If your radio/source is equipped with Pre-Amp outputs, it is possible to utilize them
to drive the 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.
c. Are your components matched? The peak power rating of your speakers must
be equal or greater than the Amplifier’s. They also must be 2 - 8 Ohms impedance.
(This information is normally printed on the speaker magnet)
d. Consider both the length of your leads, and routing when determining the
mounting location. Pre-Amp input Jacks require a length (depending on location)
of high quality shielded male to male RCA patch cord.
MOUNTING YOUR AMPLIFIER
The mounting position of your Amplifier will have a great effect on its ability to dissipate
the heat generated during normal operation. Ample Audio has designed the heatsink for
maximum heat displation and also designed with a thermal shut down protection circuit,
making it reasonably tolerant of mounting variations. Any configuration which allows
moving air to be directed over the cooling fins will improve heat dissipation dramatically.
DO NOT enclose the amplifier in a small box or cover it so that air cannot flow around fins.
Temperatures in car trunks have been measured as high as 175 F (80 ) in the summer
time. Since the thermal shut-down point for the Amplifier is 185 F (85 ), it is easy to see
that it must be mounted for maximum cooling capability. To achieve maximum
advantage of convection air flow in an enclosed trunk, mount the amplifier in a vertical
position, on vertical surface.
Cooling requirements are considerably relaxed when mounting inside the passenger
compartment since the driver will not often allow temperatures to reach a critical point.
Floor mounting under the seat is usually satisfactory as long as there is at least 1 inch
(2cm)
above the Amplifier’s fins for ventilation.
a. Select a suitable location that is convenient for mounting and is accessable for wiring
with ample room for air circulation and cooling.
b. Use the amplifier as a template to mark the mounting holes. Remove the
Amplifier and drill 6 holes. USE EXTREME CAUTION, INSPECT UNDERNEATH
SURFACE BEFORE DRILLING.
c. Secure the Amplifier using the screws provided.