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.
Two-channel (Stereo)
Input select switch is on the top of the unit. Slide this switch to the left.
RCA input jack A
In the case of two-channel mode
CAUTION
• Do not install in:
—Places where it could injure the driver or pas- sengers if the vehicle stops suddenly.
• Do not install the amplifier on unstable places |
such as the spare tire board. |
• The best location for installation differs with the |
car model and installation location. Secure the |
amplifier at a sufficiently rigid location. |
• Make temporary connections first and check that |
Power source | 14.4 V DC (10.8 V to 15.1 V allowable) |
Grounding system | Negative type |
Current consumption | 28 A (at continuous power, 4 Ω) |
Average current drawn* | 10 A (4 Ω for four channels) |
| 20 A (4 Ω for two channels) |
| Ω |
(Left) Speaker out B (Right)
connect RCA plugs to the RCA input jack A.
Connecting wire with RCA plugs
(sold separately)
From car stereo (RCA output)
Speaker (Right)
Speaker (Left)
—Places where it may interfere with the driver,
such as on the floor in front of the driver’s seat.
• Make sure that wires are not caught in the sliding |
mechanism of the seats, resulting in a short-cir- |
cuit. |
• Confirm that no parts are behind the panel when |
drilling a hole for installation of the amplifier. |
Protect all cables and important equipment such |
as fuel lines, brake lines and electrical wiring |
from damage. |
• Install tapping screws in such a way that the screw |
tip does not touch any wire. This is important to |
prevent wires from being cut by vibration of the |
car, which can result in fire. |
• 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, |
the amplifier and the system operate properly. |
• After installing the amplifier, confirm that the |
spare tire, jack and tools can be easily removed. |
Example of installation on the floor mat or on the chassis
1. Place the amplifier where it is to be |
installed. Insert the supplied tapping |
screws (4 ⋅ 18 mm) into the screw |
holes. Push on the screws with a |
screwdriver so they make marks |
where the installation holes are to be |
located. |
| 20 A (2 for four channels) |
Fuse | 30 A ⋅ 2 |
Dimensions | 304 (W) ⋅ 56 (H) ⋅ 195 (D) mm |
Weight | 3.0 kg (Leads for wiring not included) |
Maximum power output | 150 W ⋅ 4 (4 Ω) / 600 W ⋅ 2 (4 Ω) |
Continuous power output | 75 W ⋅ 4 (at 14.4 V, 4 Ω, 20 Hz to 20 kHz 1.0% THD) |
| 300 W ⋅ 2 (at 14.4 V, 4 Ω, 1 kHz 1.0% THD) |
| 150 W ⋅ 4 (at 14.4 V, 2 Ω, 1 kHz 1.0% THD) |
Load impedance | 4 Ω (2 Ω to 8 Ω allowable) |
| (Bridge connection: 4 Ω to 8 Ω allowable) |
Frequency response | 10 Hz to 50 kHz (+0 dB, –3 dB) |
Signal-to-noise ratio | 100 dB (IEC-A network) |
Distortion | 0.005% (10 W, 1 kHz) |
Separation | 70 dB (1 kHz) |
| 60 dB (100 Hz to 10 kHz) |
Low pass filter | Cut off frequency: 40 Hz to 500 Hz |
| Cut off slope: –12 dB/oct |
High pass filter | Cut off frequency: 40 Hz to 500 Hz |
From car stereo (RCA output)
If only one input plug is used, such as when the car stereo has only one output (RCA output), connect the plug to RCA input jack A, but do not connect a plug to RCA input jack B.
(Right) Speaker out A (Left)
Two-channel (Mono)
Input select switch is on the top of the unit. Slide this switch to the left.
RCA input jack A
In the case of two-channel mode connect RCA plugs to the RCA input jack A.
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. |
• To ensure proper installation, use the supplied |
parts in the manner specified. If any parts other |
than the supplied ones are used, they may damage |
2. Drill 2.5 mm diameter holes at the |
point marked, and install the ampli- |
fier, either on the carpet or directly |
to the chassis. |
| Cut off slope: –12 dB/oct |
Gain control | RCA: 400 mV to 6.5 V |
| Speaker: 1.6 V to 26 V |
Maximum input level / impedance | RCA: 6.5 V / 22 kΩ |
| Speaker: 26 V / 90 kΩ |
Note:
Three-channel
Input select switch is on the top of the unit. 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
Connecting wires
with RCA plugs
(sold separately)
From car stereo (RCA output)
If only one input plug is used, such as when the car stereo has only one output (RCA output), connect the plug to RCA input jack A, but do not connect a plug to RCA input jack B.
Speaker out B (Mono)
(Right) Speaker out A (Left)
Connecting wire with RCA plugs
(sold separately)
From car stereo (RCA output)
Speaker (Mono)
Speaker (Mono)
internal parts of the amplifier, or they may |
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.
—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.
Replacing the terminal cover
1.Align the unit and terminal cover, and insert the screw.
2.Tighten the screw with a 4 mm hexagonal wrench.
Screw Tapping-screws
(4 ⋅ 18 mm)
Terminal Cover
Floor mat or chassis
Drill a 2.5 mm diameter hole
•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.
Connecting wires 
with RCA plugs 
(sold separately)