User manual PIONEER SPEC-4

[. . . ] If both L (left) and R (right) channels are connected to the RCA input of this product, output is mixed because this product is a mono amplifier. Never replace the fuse with one of greater Use of an improper fuse could result in overheating and smoke and could cause damage to the product and injury including burns. Use the supplied hexagonal wrench to tighten screws when fastening wires to the terminal. The use of a long, commercially available hexagonal wrench can cause excessive torque to be applied possibly resulting in damage to terminals and wires. [. . . ] If sound output is cut, the gain control of this unit may be improperly set. To ensure continuous sound output at increased volume of the head unit, set the gain control of the amplifier to a proper position according to the preout maximum output level of the head unit. There is no need to decrease the volume of the head unit and too much output is controlled. If you decrease the volume of the head unit and set the gain control of the amplifier to the proper position but still the sound cuts out from time to time, contact the nearest authorized PIONEER Service Station. Relationship between the gain of the amplifier and the output power of the head unit Power Normal gain Equal power Power Maximum gain If you raise the gain of the amplifier to an improper level, only distortion is increased and the power increases only slightly. With high output the signal waveform is distorted, if you raise the gain of the amplifier the power changes only slightly. To protect the wiring, wrap adhesive tape around it where they lie against metal parts. Do not route wires where they will get hot, for example where the heater will blow over them. If the insulation heats up, it may become damaged, resulting in a short-circuit through the vehicle body. Make sure that wires will not interfere with moving parts of the vehicle, such as the gearshift, handbrake or seat sliding mechanism. Never feed power to other equipment by cutting the insulation of the power supply wire to tap from the wire. If the car stereo does not have a system remote control terminal, connect the male terminal to the power terminal through the ignition switch. Do not connect a cord having an exposed core wire to the power terminals of this amplifier (Power terminal, GND terminal, System remote control terminal). Since the wire will become loose over time, it must be periodically inspected and tightened as necessary. Fasten while making sure to not to clamp the insulating sheath of the wire. Use the supplied hexagonal wrench to tighten and loosen the terminal screw of the amplifier. However, since excessively tightening the terminal screw of the System remote control has the risk of damaging the wire, be careful not to tighten excessively by observing the status of the wire when tightening. 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. We recommend that you use the special red battery and ground wire [RD-228], which is sold separately. Failure to securely fasten the battery wire to the terminal using the terminal screws could cause the terminal area to overheat and could result in damage and injury including minor burns. Expose the end of the speaker wires using nippers or a cutter by about 10 mm to 12 mm. [. . . ] 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. 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. [. . . ]