Bedienungsanleitung Pioneer GM-3000T (Seite 3 von 8) (Englisch, Französisch)

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Connecting the Unit

Connecting the Power Terminal

• Always use the special red battery and ground

wire [RD-223], which is sold separately. Connect

the battery wire directly to the car battery positive

terminal (+) and the ground wire to the car body.

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.

2. Twist the battery wire, ground wire

and system remote control wire.

3. Attach lugs to wire ends. Lugs not

supplied.

• Use pliers, etc., to crimp lugs to wires.

4. Connect the wires to the terminal.

• Fix the wires securely with the terminal

screws.

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.

2. Attach lugs to speaker wire ends.

Lugs not supplied.

• Use pliers, etc., to crimp lugs to wires.

10 mm

Fuse (30 A)

Engine

compart-

ment

Interior of

the vehicle

Drill a 14 mm

(1/2 inch) hole

into the vehicle

body.

Insert the O-ring rubber

grommet into the vehicle

body.

Twist

Positive terminal

GND terminal

Power terminal

Battery wire

System remote

control terminal

System remote

control wire

Ground wire

3. Connect the speaker wires to the

speaker output terminals.

• Fix the speaker wires securely with the termi-

nal screws.

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.

7 Connections when using the speaker

input

Twist

Speaker

output

terminal

Terminal screw

Speaker wire

Lug

Fuse (30 A)

Battery wire

Ground wire

Lug

Speaker wire

Connecting the Speaker wires

The speaker output mode can be two-chan-

nel (stereo), one-channel (mono), or three-

channel (stereo + mono). Connect the

speaker leads to suit the mode according to

the figures shown below.

• Do not connect both the RCA input and the

speaker input at the same time.

Two-channel mode (stereo)

One-channel mode (mono)

Three-channel mode (stereo + mono)

The power amplifier is basically a two-

channel/one-channel bridgeable amplifier,

but three channels can be achieved by

combining the stereo and mono modes

using inductors and capacitors.

Three-channel mode, two-way system

Three-channel mode, three-way system

• Inductors (L1 and L2 in the diagrams)

act as low-pass filters. Capacitors (C1

and C2 in the diagrams) act as high-pass

filters. Inductors (L) are used for the

woofer/subwoofer, and capacitors (C)

are used for the high/mid-high.

• 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.

(Right)

Speaker

(Left)

Speaker (Mono)

Mid-high (Right)

Woofer (Mono)

Mid-high (Left)

High/mid-high

(Right)

Mid/mid-bass

(Right)

Woofer/subwoofer

(Mono)

Mid/mid-bass

(Left)

High/mid-high

(Left)

Component Guide

Speaker load Impedance 2 Ω 4 Ω 8 Ω

fc (Hz) L (mH) C (µF) L (mH) C (µF) L (mH) C (µF)

50 6.4 1,600 12.70 800.0 25.50 400.0

80 4.0 1,000 8.00 500.0 16.00 250.0

125 2.5 640 5.10 300.0 10.00 160.0

200 1.6 400 3.20 200.0 6.40 100.0

320 1.0 250 2.00 125.0 4.00 62.0

500 0.64 160 1.30 80.0 2.60 40.0

800 0.4 100 0.80 50.0 1.60 25.0

1,250 0.25 64 0.50 30.0 1.00 16.0

2,000 0.16 40 0.30 20.0 0.64 10.0

3,200 0.1 25 0.20 12.5 0.40 6.2

5,000 0.06 16 0.13 8.0 0.26 4.0

8,000 0.04 10 0.08 5.0 0.16 2.5

10,000 0.03 8 0.06 4.0 0.13 2.0

Setting the Filter Constant

Low-pass filter (for subwoofer/woofer):

6 dB/octave

High-pass filter (for mid/mid-high):

6 dB/octave

Band-pass filter (combination of low-pass

filter and high-pass filter for mid-

bass/mid): 6 dB/octave

• A multi-channel system can be set up using a

combination of filters. The inductance (L) and

capacitance (C) will determine the frequency (fc)

that the speaker will reproduce. Refer to the chart

below to determine the components required.

• Use the capacitors specified. Non-polarized capac-

itors rated at over ±25 V should be used for C1

and C2 in the diagram. Because of the voltage

output of the amplifier, it is very important to use

non-polarized capacitors rated at or over 25 V.

This will prevent a safety hazard.

0dB

–6dB

0dB

–6dB

0dB

–6dB

Speaker output

Car Stereo

Speaker input connector

To speaker input terminal of

this unit.

White:

Left

Gray:

Right +

White/black:

Left ≠

Gray/black:

Right ≠

(3/8 inch)

HRD0271A_Eng 1/9/04 13:27 Page 9

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