User manual PIONEER GM-X374

[. . . ] Detect the cause and solve the problem, then replace the fuse with another one of the same size and rating. To prevent malfunction of the amplifier and speakers, the protective circuit will cut the power supply to the amplifier (sound will stop) when an abnormal condition occurs. In such a case, switch the power to the system OFF and check the connection of the power supply and speakers. To prevent an electric shock or short-circuit during connection and installation, be sure to disconnect the negative (­) terminal of the battery beforehand. [. . . ] the speaker impedance must be 2 to 8 ohms. But in case of two-channel and other bridge connections, the speaker impedance must be 4 to 8 ohms. Install and route the separately sold battery wire as far away as possible from the speaker wires. Install and route the separately sold battery wire, ground wire, speaker wires and the amplifier as far away as possible from the antenna, antenna cable and tuner. Cords for this product and those for other products may be different colors even if they have the same function. When connecting this product to another product, refer to the supplied Installation manuals of both products and connect cords that have the same function. Subwoofer Other than subwoofer Subwoofer Other than subwoofer Subwoofer Other than subwoofer Subwoofer Other than subwoofer Subwoofer Other than subwoofer Subwoofer Other than subwoofer Subwoofer Other than subwoofer Subwoofer Other than subwoofer Ground wire (Black) [RD-223] (sold separately) Connect to metal body or chassis. Fuse (30 A) Special red battery wire [RD-223] (sold separately) After making all other connections at the amplifier, connect the battery wire terminal of the amplifier to the positive (+) terminal of the battery. fuse (30 A) Grommet Connecting wires with RCA pin plugs (sold separately). Car stereo with RCA output jacks RCA input Amplifier with RCA input jacks External Output If only one input plug is used, do not connect anything to RCA input jack B. The female terminal can be connected to the auto-antenna relay control terminal. If the car stereo does not have a system remote control terminal, connect the male terminal to the power terminal through the ignition switch. Always use the special red battery and ground wire [RD-223], which is sold separately. Fix the wires securely with the terminal screws. 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. Expose the end of the speaker wires using nippers or a cutter by about 10 mm and twist. Fix the speaker wires securely with the terminal screws. Do not connect both the RCA input and the speaker input at the same time. Connect the speaker leads to suit the mode according to the figures shown below. [. . . ] Use this value when working out total current drawn by multiple power amplifiers. 8 kg (Leads for wiring not included) Maximum power output . Cut off frequency: 80 Hz Cut off slope: ­12 dB/oct High pass filter . Cut off frequency: 80 Hz Cut off slope: ­12 dB/oct Maximum input level/impedance . [. . . ]