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Connecting the Unit
Connecting the Speakers and Input Wires
The speaker output mode can be four-channel, three-channel (stereo + mono) or two-channel
(stereo, mono). Connect the speaker leads to suit the mode according to the figures shown
below.
Four-channel mode
Input Select Switch
For two-channel input, slide this switch to
the left. For four-channel input, slide this
switch to the right.
RCA input jack A
RCA input jack B
(Right)
Speaker out A
(Left)
+
≠
≠
+
Connecting wires
with RCA plugs (sold
separately)
From car stereo (RCA output)
(Left)
If only one input plug is used, such as when
Speaker out B
the car stereo has only one output (RCA out-
(Right)
put), connect the plug to RCA input jack A,
but do not connect a plug to RCA input jack B.
Three-channel mode
Input Select Switch
For two-channel input, slide this switch to
the left. For four-channel input, slide this
switch to the right.
RCA input jack A
RCA input jack B
(Right)
Speaker out A
(Left)
+
≠
≠
+
Connecting wires
with RCA plugs (sold
separately)
Speaker out B
From car stereo (RCA output)
(Mono)
If only one input plug is used, such as when
the car stereo has only one output (RCA out-
put), connect the plug to RCA input jack A,
but do not connect a plug to RCA input jack B.
Two-channel mode (stereo)
RCA input jack A
In the case of two-channel mode
Input Select Switch
connect RCA plugs to the RCA
Slide this switch to the left.
input jack A.
Speaker (Right)
+ ≠
Connecting wire with RCA
plugs (sold separately)
From car stereo (RCA output)
Speaker (Left)
Two-channel mode (mono)
RCA input jack A
In the case of two-channel mode
Input Select Switch
connect RCA plugs to the RCA
Slide this switch to the left.
input jack A.
Speaker (Mono)
≠
+
Connecting wire with RCA
plugs (sold separately)
Speaker (Mono)
From car stereo (RCA output)
Installation
• Do not install the amplifier on unstable places
CAUTION
such as the spare tire board.
• The best location for installation differs with the
• Do not install in:
car model and installation location. Secure the
—Places where it could injure the driver or pas-
amplifier at a sufficiently rigid location.
sengers if the vehicle stops suddenly.
• Make temporary connections first and check that
—Places where it may interfere with the driver,
the amplifier and the system operate properly.
such as on the floor in front of the driver's
• After installing the amplifier, confirm that the
seat.
spare tire, jack and tools can be easily removed.
• Make sure that wires are not caught in the sliding
mechanism of the seats, resulting in a short-cir-
Example of installation on the floor
cuit.
• Confirm that no parts are behind the panel when
mat or on the chassis
drilling a hole for installation of the amplifier.
Protect all cables and important equipment such
as fuel lines, brake lines and electrical wiring
1. Place the amplifier where it is to be
from damage.
installed. Insert the supplied tapping
• Install tapping screws in such a way that the screw
screws (4 × 18 mm) into the screw
tip does not touch any wire. This is important to
prevent wires from being cut by vibration of the
holes. Push on the screws with a
car, which can result in fire.
screwdriver so they make marks
• DO NOT allow amplifier to come into contact
where the installation holes are to be
with liquids due to, for example, the location
where the amplifier is installed. Electrical shock
located.
could result. Also, amplifier and speaker damage,
smoke, and overheating could result from contact
2. Drill 2.5 mm diameter holes at the
with liquids. In addition, the amplifier surface and
point marked, and install the ampli-
the surface of any attached speakers could become
hot to the touch and minor burns could result.
fier, either on the carpet or directly
• To ensure proper installation, use the supplied
to the chassis.
parts in the manner specified. If any parts other
than the supplied ones are used, they may damage
Tapping-screws
internal parts of the amplifier, or they may
(4 × 18 mm)
become loose causing the amplifier to shut down.
• Never replace the fuse with one of greater value
or rating than the original fuse. Use of an improp-
er fuse could result in overheating and smoke and
could cause damage to the product and injury
including burns.
CAUTION:
To prevent malfunction and/or injury
• To ensure proper heat dissipation of the amplifier,
be sure of the following during installation.
Drill a 2.5 mm diameter hole
—Allow adequate space above the amplifier for
proper ventilation.
—Do not cover the amplifier with a floor mat or
carpet.
• DO NOT allow amplifier to come into contact
with liquids due to, for example, the location
where the amplifier is installed. Electrical shock
could result. Also, amplifier and speaker damage,
smoke, and overheating could result from contact
with liquids. In addition, the amplifier surface and
the surface of any attached speakers could become
hot to the touch and minor burns could result.
Specifications
Power source .............................................................................................................. 14.4 V DC (10.8 — 15.1 V allowable)
Grounding system ............................................................................................................................................ Negative type
Current consumption ........................................................................................................ 35.0 A (at continuous power, 4 Ω)
Average current drawn* .......................................................................................................... 9.0 A (4 Ω for four channels)
Fuse .......................................................................................................................................................................... 25 A × 2
Dimensions ........................................................................................................................ 300 (W) × 60 (H) × 327 (D) mm
Weight ...................................................................................................................... 4.7 kg (Leads for wiring not included)
Maximum power output ................................................................................................ 120 W × 4 (4 Ω) / 300 W × 2 (4 Ω)
Continuous power output .............................................................. 60 W × 4 (at 14.4 V, 4 Ω, 20 Hz— 20 kHz, 0.2% THD)
150 W × 2 (at 14.4 V, 4 Ω, 20 Hz— 20 kHz, 0.8% THD)
75 W × 4 (at 14.4 V, 2 Ω, 20 Hz— 20 kHz, 0.8% THD)
Continuous power output (DIN power) ................................ 80 W × 4 (4 Ω) / 230 W × 2 (4 Ω) (DIN45324, +B=14.4 V)
Load impedance ............................................................................................................................ 4 Ω (2 — 8 Ω allowable)
Frequency response ............................................................................................................ 10 Hz— 50 kHz (+0 dB, –1 dB)
Signal-to-noise ratio ........................................................................................................................ 95 dB (IEC-A network)
Distortion .............................................................................................................................................. 0.01% (10 W, 1 kHz)
Separation ........................................................................................................................................................ 70 dB (1 kHz)
Low pass filter ................................................................................................................................ Cut off frequency: 80 Hz
High pass filter ................................................................................................................................ Cut off frequency: 80 Hz
Gain control ...................................................................................................................................... RCA: 200 mV — 6.5 V
Maximum input level / impedance ........................................................................................................ RCA: 6.5 V / 22 kΩ
Note:
• Specifications and the design are subject to possible modification without notice
due to improvements.
*Average current drawn
• The average current drawn is nearly the maximum current drawn by this unit
when an audio signal is input. Use this value when working out total current
drawn by multiple power amplifiers.
Floor mat
or chassis
15.0 A (4 Ω for two channels)
(Bridge connection: 4 — 8 Ω allowable)
Cut off slope: –12 dB/oct
Cut off slope: –12 dB/oct
Speaker: 0.8 — 26 V
Speaker: 26 V / 40 kΩ
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