Installing Your Amplifier; Planning Your System - Insignia NS-A 1200 Guía Del Usario

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Insignia NS-A1200 Car Amplifier
Item
4 B- terminal
(chassis
ground)

Installing your amplifier

Planning your system

Before beginning the installation, consider the following:
If you plan to expand your system by adding other components
sometime in the future, make sure that adequate space is
provided and that cooling requirements are met.
Consider whether you should use high or low inputs. Your
amplifier has been designed to accept a low-level (pre-amp
output from your stereo) signal source. If your source device is
equipped with pre-amp outputs, you can use them to drive the
amplifier, so you can connect the amplifier to the two rear
speakers. Then you can use the built-in power of your source
device to drive the two front speakers.
Make sure that your components are adequately matched. The
peak power rating of your speakers must be equal to or greater
than the amplifier's. They also must be 1-8 Ω impedance. You
can find the speaker's impedance rating by looking on the
speaker magnet.
Consider the length of your leads (wires) and the routing when
determining the amplifier's mounting location. Pre-amp input
jacks require a length of high-quality, shielded, male-to-male
RCA patch cable.
Description
To avoid unwanted ignition noise caused by ground
loops, the amplifier must be grounded to a clean,
bare, metal surface of the vehicle's chassis. The
ground wire should not be more than three feet
(one meter) long.
Note
Distortion level is considerably lower from pre-amp (low
level) outputs.
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