USB 1389 - 1390 - 1391 - 1392
Class-AB Power amplifiers
PRE-INSTALLATION
We recommend you have the installation done by an Authorized US BLASTER
dealer. Required power, ground wire and proper external fuse as below:
Model
Fuse
USB 1392
30AMP
USB 1391
40AMP
USB 1390
40AMP
USB 1389
60AMP
We recommend the fuse should be installed away less than 15 inches from the battery. The ground
wire should be connected directly with the chassis of your vehicle which should be metal to metal
ground point connection. The amplifier must be mounted securely at a solid, dry and low vibration
surface in the trunk or passenger area. Fix the amplifier in an open-air area to insure proper heat dis-
sipation. Fix the amplifier in a place where you can easily access to set the input controllers. Install
all amplifier cables as far as possible from car electrical cables such as the car ignition cable.
WIRING CONFIGURATION
© US Blaster Europe BV
Wire
8 Gauge
4-8Gauge
4-8Gauge
4-6Gauge