User manual PIONEER GM-A4604

[. . . ] When installing this unit, make sure to connect the ground wire first. Ensure that the ground wire is properly connected to metal parts of the car’s body. The ground wire of the one of this unit must be connected to the car separately with different screws. If the screw for the ground wire loosens or falls out, it could result in fire, generation of smoke or malfunction. [. . . ] 1 LPF (low-pass filter)/HPF (high-pass filter) select switch Switch the settings based on the connected speaker. HPF eliminates low range frequency and output high range 4 En <5707000008290>4 Black plate (5, 1) Section Setting the unit !Bass boost level setting applies only to CHANNEL B (channel B) output. Relationship between amplifier gain and head unit output power 02 English Setting gain properly !Protective function included to prevent malfunction of the unit and/or speakers due to excessive output, improper use or improper connection. , 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. in such cases , please contact the nearest authorized Pioneer Service Station. Gain control of this unit Preout level: 2 V (Standard: 500 mV) 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 If the signal waveform is distorted due to high output, even if the amplifier gain is raised, the output power will change only slightly. En 5 <5707000008290>5 Black plate (6, 1) Section 03 Connecting the units Connection diagram 9 Please see the following section for speaker connection instructions. Speaker output terminals Please see the following section for speaker connection instructions. System remote control wire (sold separately) Connect male terminal of this wire to the system remote control terminal of the car stereo. The female terminal can be connected to the auto-antenna relay control terminal. If the car stereo lacks a system remote control terminal, connect the male terminal to the power terminal via the ignition switch. fuse 25 A × 2 (GM-A6604) / 30 A × 1 (GMA4604) Fuse (30 A) × 2 Grommet Rear side Front side a b c d e f Note INPUT SELECT (input select) switch must be set. 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. 5 Connecting wire with RCA pin plugs (sold separately) 6 RCA input jack A 7 RCA input jack B 8 Speaker input terminal (use a connector included) Before connecting the amplifier WARNING ! [. . . ] 5 mm diameter holes at the imprints either on the carpet or directly on the chassis. 3 Install the amplifier with the use of supplied tapping screws (4 mm × 18 mm). To ensure proper heat dissipation of the amplifier, ensure the following during installation: — Allow adequate space above the amplifier for proper ventilation. 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. [. . . ]