HELIX D FOUR User Manual

12
Connectors and control units
10
Speaker Output
Speaker outputs for connecting speaker
systems.
11
Power & Protect LED
This LED indicates the operating mode of the
amplier.
12
Fuse
Input fuses - 2 x 25 Ampere.
13
+12 V
Connector for the +12 V power cable of the
positive terminal of the battery.
14
REM
Connector for the remote cable.
15
GND
Connector for the ground cable (negative
terminal of the battery or metal body of the
vehicle).
1
Remote
Input for connecting an optionally available
cable remote control for volume adjustment
of the channels C and D in bandpass mode.
2
Mode Input
Switch to route input signals to respective
amplier channels.
3
Bass Boost
Control for adjusting the bass boost on
channels C and D from 0 to 12 dB.
4
Line Input
RCA inputs for connecting lowlevel line sig-
nals.
5
LPF
Control for adjusting the lowpass lter of the
channels C and D from 40 Hz to 4,000 Hz.
6
X-Over
Switch for activating the lters for each
channel pair.
7
HPF
Control for adjusting the highpass lter from
15 Hz to 4,000 Hz.
8
Highlevel Input
Highlevel speaker inputs for connecting a
factory radio or an aftermarket radio without
lowlevel line outputs.
9
Level Input
Control for adjusting the input sensitivity of
the lowlevel Line and Highlevel Inputs.
10
11 1412 13 15
1 3 5 6 7 9
2
4
4 8
9 7 6

HELIX D FOUR Specifications

General

Brand	HELIX
Model	D FOUR
Category	Amplifier
Language	English