User manual PIONEER GM-6500F

[. . . ] Check the connections of the power supply and speakers if the fuse of the separately sold battery wire or the amplifier fuse blows. Determine and resolve the cause, then replace the fuse with and identical equivalent. Do not allow this unit to come into contact with liquids. Also, damage to this unit, smoke, and overheating could result from contact with liquids. [. . . ] , this function cuts off the output for a few seconds as a normal function, but output is restored when the volume of the head unit is turned down. A cut in sound output may indicate improper setting of the gain control. To ensure continuous sound output with the head unit at a high volume, set amplifier gain control to a level appropriate for the preout maximum output level of the head unit, so that volume can remain unchanged and to control excess output. Despite correct volume and gain settings, the unit sound still cuts out periodically. Above illustration shows NORMAL gain setting. Relationship between amplifier gain and head unit output power If amplifier gain is raised improperly, this will simply increase distortion, with little increase in power. Signal waveform when outputting at high volume using amplifier gain control Signal waveform distorted with high output, if you raise the gain of the amplifier the power changes only slightly. The female terminal can be connected to the auto-antenna relay control terminal. 1 Special red battery wire RD-223 (sold separately) After completing all other amplifier connections, finally connect the battery wire terminal of the amplifier to the positive (+) battery terminal. 2 Ground wire (Black) RD-223 (sold separately) Connect to metal body or chassis. 3 Car stereo with RCA output jacks (sold separately) 4 External output If only one input plug is used, do not connect anything to RCA input jack B. To protect the wiring, wrap sections in contact with metal parts in adhesive tape. Never cut the insulation of the power supply to feed power to other equipment. Never shorten any wires, the protection circuit may malfunction. Never ground speaker wire directly or band together multiple speakers' negative (*) lead wires. If the system remote control wire of the amplifier is connected to the power terminal via the ignition switch (12 V DC), the amplifier will remain on with the ignition whether the car stereo is on or off, which may exhaust battery if the engine is at rest or idling. Install and route the separately sold battery wire as far 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. Ensure speakers conform to the following standards, otherwise there is a risk of fire, smoke or damage. Improper connection to the amplifier may result in malfunction or personal injury due to burns from overheating. [. . . ] To ensure proper heat dissipation of the amplifier, ensure the following during installation: -- Allow adequate space above the amplifier for proper ventilation. -- Do not cover the amplifier with a floor mat or carpet. Protection function may activate to protect the amplifier against overheating due to installation in locations where sufficient heat cannot be dissipated, continuous use under high-volume conditions, etc. Avoid routing wires through hot areas, such as near the heater outlet. [. . . ]