Connecting the Unit
Connecting the Power Terminal
•Always use the special red battery and ground wire
1.Pass the battery wire from the engine compartment to the interior of the vehicle.
•After making all other connections to the amplifier, connect the battery wire terminal of the amplifier to the positive (+) terminal of the battery.
Engine | Interior of |
Fuse (30 A) compart- | |
ment | the vehicle |
Fuse (30 A) | Drill a 14 mm |
Positive terminal | (1/2 inch) hole |
Insert the | into the vehicle |
grommet into the vehicle | body. |
body. |
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2.Twist the battery wire, ground wire and system remote control wire.
Twist
3.Attach lugs to wire ends. Lugs not supplied.
• Use pliers, etc., to crimp lugs to wires.
Lug
Ground wire
Lug
Battery wire
4.Connect the wires to the terminal.
•Fix the wires securely with the terminal screws.
| GND terminal |
Power terminal | System remote |
| control terminal |
| System remote |
| control wire |
| Ground wire |
Battery wire
Connecting the Speaker Output Terminals
1.Expose the end of the speaker wires using nippers or a cutter by about 10 mm (3/8 inch) and twist.
Twist
10 mm (3/8 inch)
2.Attach lugs to speaker wire ends. Lugs not supplied.
• Use pliers, etc., to crimp lugs to wires.
Lug
Speaker wire
3.Connect the speaker wires to the speaker output terminals.
•Connect the speaker wires, passing them through the terminal cover.
•Fix the speaker wires securely with the termi- nal screws.
Terminal screw
Terminal cover Speaker
output terminal
Speaker wire
4. Push on the terminal cover.
Using the Speaker Input
Connect the car stereo speaker output wires to the amplifier using the supplied speaker input connector.
•Do not connect both the RCA input and the speaker input at the same time.
7Connections when using the speaker input
Car Stereo
Speaker output
White/black: | Gray/black: |
Left ≠ | Right ≠ |
White: | Gray: |
Left + | Right + |
Speaker input connector
To speaker input terminal of this unit.
Connecting the Speaker wires
The speaker output mode can be
•Do not connect both the RCA input and the speaker input at the same time.
(Right) Speaker (Left)
Speaker (Mono)
Three-channel mode (stereo + mono)
The power amplifier is basically a two-
C1 
L1 
Woofer (Mono)
C1 |
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Three-channel mode, three-way system
C1 (Right)
L2 | C2 | ||
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Woofer/subwoofer
L1 (Mono)
L2 | C2 | ||
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C1
(Left)
•Inductors (L1 and L2 in the diagrams) act as
•Remember when bridging an amplifier it will see only half of the original speaker impedance. Therefore, you must use speakers that have ratings of 4 ohms or higher. If you use speakers that have lower impedance ratings it may cause damage to the amplifier.
•When the inductors and capacitors are connected to the speaker wires, secure or solder them so they cannot be pulled loose. Tape or use heat shrink on the joints to prevent short circuits.
Setting the Filter Constant |
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6 dB/octave |
| filter and |
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| 0dB | bass/mid): 6 dB/octave |
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L1 | L2 |
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fC | f |
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2fC |
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| fCL | fCL | fCH | 2fCH |
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High-pass filter (for mid/mid-high):
6 dB/octave |
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| combination of filters. The inductance (L) and |
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| that the speaker will reproduce. Refer to the chart | |
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| • Use the capacitors specified. |
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| fC f C | f | capacitors rated at over ±25 V should be used for |
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Component Guide
Speaker load Impedance | 2 Ω |
| 4 Ω |
| 8 Ω |
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fc (Hz) | L (mH) | C (∝F) | L (mH) | C (∝F) | L (mH) | C (∝F) |
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50 | 6.4 | 1,600 | 12.70 | 800.0 | 25.50 | 400.0 |
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80 | 4.0 | 1,000 | 8.00 | 500.0 | 16.00 | 250.0 |
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125 | 2.5 | 640 | 5.10 | 300.0 | 10.00 | 160.0 |
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200 | 1.6 | 400 | 3.20 | 200.0 | 6.40 | 100.0 |
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320 | 1.0 | 250 | 2.00 | 125.0 | 4.00 | 62.0 |
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500 | 0.64 | 160 | 1.30 | 80.0 | 2.60 | 40.0 |
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800 | 0.4 | 100 | 0.80 | 50.0 | 1.60 | 25.0 |
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1,250 | 0.25 | 64 | 0.50 | 30.0 | 1.00 | 16.0 |
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2,000 | 0.16 | 40 | 0.30 | 20.0 | 0.64 | 10.0 |
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3,200 | 0.1 | 25 | 0.20 | 12.5 | 0.40 | 6.2 |
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5,000 | 0.06 | 16 | 0.13 | 8.0 | 0.26 | 4.0 |
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8,000 | 0.04 | 10 | 0.08 | 5.0 | 0.16 | 2.5 |
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10,000 | 0.03 | 8 | 0.06 | 4.0 | 0.13 | 2.0 |
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