PIONEER GMX924X1R/UC/ES/EW
Service Manual

GM-X1024,GM-X924

30
Fuse (30 A) avoid risk short-circuit and damage to ing parts of vehicle, such as the gearshift, After making all other connections at amplifier, tape. To protect the wiring, wrap adhesive tape tion circuit may fail to work when it should. Grommet positive (+) terminal battery. � Do not route wires where they will get hot, for insulation of the power supply wire to tap Connect to metal body or chassis. body. RCA input jacks Do not ground speaker directly or con� Install and route the separately sold battery wire Connecting wires RCA pin � This unit is for vehicles with a 12-volt Install and route the separately sold battery wire RCA output jacks If car stereo is kept on for a long time while � Speakers be connected to the amplifier should output RCA input jack A, B Reverse side plugs (sold separately). Three-channel Sub-woofer Nominal input: Min. 65 W Fuse (30 A) � 2 Speaker output terminal Blue [RD-223] (sold separately). See �Connecting Connect male terminal this to the blue wire of Speaker wires� section the car stereo (SYSTEM REMOTE CONTROL). The for speaker connection female terminal can be connected to the auto-antenna relay instructions. control terminal. If the car stereo does not have a system remote control terminal, connect male terminal to the power terminal through the ignition switch.

Connecting the Unit

CAUTION Connection Diagram

Disconnect negative (�) terminal of the battery � Make sure that wires will not interfere with mov-

the unit. handbrake or seat sliding mechanism.

Secure wiring with cable clamps or adhesive � Do not shorten any wires. Otherwise the protecSpecial red battery wire [RD-223] (sold separately).

around it where they lie against metal parts. � Never feed power other equipment by cutting connect battery wire terminal of the amplifier to

example where heater will blow over them. If from wire. The current capacity of the wire Fuse (30 A) the insulation heats up, it may become damaged, will be exceeded, causing overheating. resulting in a short-circuit through the vehicle Ground wire (black) [RD-223] (sold separately).

To prevent damage RCA input Amplifier with

nect a negative (�) lead wire for several speakers. far away as possible from the speaker wires.

negative grounding. Before installing it in a recreground wire, speaker wires, and the amplifier plugs (sold separately). ational vehicle, truck, or bus, check battery far away as possible from the antenna, antenna voltage. cable and tuner. Car stereo with

� If blue wire of the amplifier is connected to for stereo, monaural and other bridge connecthe Speakers and Input wires� section.

engine is at rest or idling, battery may go conform with the standards listed below. External Output dead. Turn car stereo off when engine is at Otherwise damage will occur to the speaker. The For details on how connect to RCA rest or idling. speaker impedance must be 1 ohms. (2 to 8 � input jacks A and B, see the �Connecting

power terminal through the ignition switch tions.) If only one input plug is used, do not con(12 V DC), the amplifier will always be on when nect anything to RCA input jack B. ignition is on� regardless of whether the car stereo is on or off. Because of this, the battery could go dead if the engine is at rest or idle.

Channel Speaker Type Power

Four-channel

Sub-woofer Nominal input: Min. 65 W

Other than sub-woofer Max. input: Min. 130 W

Two-channel

Sub-woofer Nominal input: Min. 150 W

Other than sub-woofer Max. input: Min. 300 W Connecting wires with RCA pin

Speaker output A Other than sub-woofer Max. input: Min. 130 W

Three-channel Sub-woofer Nominal input: Min. 150 W

Speaker output B Other than sub-woofer Max. input: Min. 300 W