User manual PIONEER PRS-D220

[. . . ] Thank you for purchasing this PIONEER product. Before attempting operation, be sure to read this manual. If you want to dispose this product, do not mix it with general household waste. There is a separate collection system for used electronic products in accordance with legislation that requires proper treatment, recovery and recycling. [. . . ] 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. The above illustration shows the gain set to NORMAL. 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. Otherwise the protection circuit may fail to work when it should. Never feed power to other equipment by cutting the insulation of the power supply wire to tap from the wire. Never replace the fuse with one of greater value or rating than the original fuse. Use of an improper fuse could result in overheating and smoke and could cause damage to the product and injury including burns. Do not ground the speaker wire directly or connect a negative (­) lead wire for several speakers. This unit is for vehicles with a 12-volt battery and negative grounding. If the car stereo is kept on for a long time while the engine is at rest or idling, the battery may go dead. Turn the car stereo off when the engine is at rest or idling. If the system remote control wire of the amplifier is connected to the power terminal through the ignition switch (12 V DC), the amplifier will always be on when the 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 idling. Speakers to be connected to the amplifier should conform with the standards listed below. If they do not conform, they may catch fire, emit smoke or become damaged. The speaker impedance must be 2 to 8 ohms for stereo connection, and 4 to 8 ohms for monaural and other bridge connection. [. . . ] Connect the car stereo speaker output wires to the amplifier using the supplied speaker input wire with RCA pin cord. As a result of connecting the car stereo speaker output wire to the amplifier, the power of the amplifier is turned on automatically when the car stereo is turned on. It is not necessary to connect the system remote control wire in this case. In the case the amplifier and head unit are connected using a speaker input wire with RCA pin cord, the amplifier power is only turned on when one amplifier is being used. [. . . ]