User Manual

! Check all connections and systems before
final installation.
! After installing the amplifier, confirm that the
spare tire, jack and tools can be easily re-
moved.
Example of installation on
the floor mat or chassis
1 Place the amplifier in the desired instal-
lation location.
Insert the supplied tapping screws (4 mm ×
18 mm (1/8 in. × 3/4 in.)) into the screw holes
and push on the screws with a screwdriver so
they make an imprint where the installation
holes are to be located.
2 Drill 2.5 mm (1/8 in.) diameter holes at
the imprints either on the carpet or directly
on the chassis.
3 Install the amplifier with the use of
supplied tapping screws (4 mm × 18 mm
(1/8 in. × 3/4 in.)).
45
1
23
1 Tapping-screws (4 mm × 18 mm (1/8 in. ×
3/4 in.))
2 Drill a 2.5 mm (1/8 in.) diameter hole.
3 Floor mat or chassis
4 Hole-to-hole distance: 343 mm (13-1/2 in.)
(GM-A6704) / 313 mm (12-3/8 in.) (GM-
A4704)
5 Hole-to-hole distance: 195 mm (7-5/8 in.)
Specifications
GM-A6704
Power source ............................. 14.4 V DC (10.8 V to 15.1 V
allowable)
Grounding system ................... Negative type
Current consumption ............ 31 A (at continuous power,
4 W)
Average current consumption
..................................................... 8.5 A (4 W for four channels)
14 A (4 W for two channels)
Fuse ................................................ 25 A × 2
Dimensions (W × H × D) ...356mm × 60 mm ×
215 mm
(14 in. × 2-3/8 in. × 8-1/2 in.)
Weight .......................................... 2.2 kg (4.9 lbs)
(Leads for wiring not in-
cluded)
Maximum power output ....... 170 W × 4 (4 W) / 250 W × 4
(2 W) / 1000 W TOTAL
(BRIDGE)
Continuous power output ... 60 W × 4 (at 14.4 V, 4 W,
20 Hz to 20 kHz ≦ 1 % THD
+N)
190 W × 2 (at 14.4 V, 4 W
BRIDGE 1 kHz, ≦ 1 % THD
+N)
95 W × 4 (at 14.4 V, 2 W,
1 kHz, ≦ 1 % THD+N)
Load impedance ...................... 4 W (2 W to 8 W allowable)
Frequency response ............... 10 Hz to 70 kHz (+0 dB,
–3 dB)
Signal-to-noise ratio ............... 95 dB (IHF-A network)
Distortion ..................................... 0.05 % (10 W, 1 kHz)
Low pass filter:
(A ch)
Cut off frequency ........... 80 Hz
Cut off slope ..................... –12 dB/oct
(B ch)
Cut off frequency ........... 80 Hz
Cut off slope ..................... –12 dB/oct
High pass filter:
(A ch)
Cut off frequency ........... 40 Hz to 500 Hz
Cut off slope ..................... –12 dB/oct
(B ch)
Cut off frequency ........... 80 Hz
Cut off slope ..................... –12 dB/oct
Bass boost:
Frequency .......................... 50 Hz
Level ..................................... 0 dB/6 dB/12 dB
Gain control:
RCA ...................................... 0.3 V to 6.5 V
Speaker .............................. 3.0 V to 26 V
Maximum input level / impedance:
RCA ...................................... 6.5 V / 22 kW
Speaker .............................. 26 V / 16 kW
En
Installation Additional information
5707000011290S <15>