User manual SONY XM-5020X

[. . . ] This power amplifier employs a protection circuit* to protect the transistors and speakers if the amplifier malfunctions. Do not attempt to test the protection circuits by covering the heat sink or connecting improper loads. Do not use the unit on a weak battery as its optimum performance depends on a good power supply. For safety reasons, keep your car audio volume moderate so that you can still hear sounds outside your car. [. . . ] The ground lead is not securely connected. t Fasten the ground lead securely to a metal point of the car. The voltage going into the remote terminal is too low. The connected master unit is not turned on. The power connecting leads are installed too close to the RCA pin cords. The ground lead is not securely connected. This amplifier has separated circuits for left and right channels built in. If you want to use this amplifier as a monaural amplifier, set the left and right dials of the Cutoff frequency adjustment, LOW BOOST level and LEVEL adjustment controls to the same position. If you do not use the low-pass filter, high-pass filter and low boost circuit, set the DIRECT switch to ON for more enjoyable high quality sound. 005 % or less (at 1kHz, 4 ohms) Input level adjustment range 0. 0 V (High level input) OTL (output transformerless) circuit Pulse power supply RCA pin jacks High level input connector Speaker terminals Through out pin jacks High-pass filter Low-pass filter Low boost Power requirements 50 ­ 200 Hz, ­12 dB/oct 50 ­ 200 Hz, ­12 dB/oct 0 ­ 10 dB (40 Hz) 12 V DC car battery (negative ground) Power supply voltage 10. Accessories Supplied accessories Mounting screws (4), High level input cord (1), Protect cover (1), Protection cap (1), (1set) Design and specifications are subject to change without notice. Mount the unit either inside the trunk or under a seat. Choose the mounting location carefully so the unit will not interfere with the normal movements of the driver and it will not be exposed to direct sunlight or hot air from the heater. Do not install the unit under the floor carpet, where the heat dissipation from the unit will be considerably impaired. First, place the unit where you plan to install it, and mark the positions of the four screw holes on the surface of the mounting board (not supplied). Then drill the holes approximately 3 millimeters (mm) in diameter and mount the unit onto the board with the supplied mounting screws. the supplied mounting screws are 15 mm long. Therefore, make sure that the mounting board is thicker than 15 mm. Before making any connections, disconnect the ground terminal of the car battery to avoid short circuits. Be sure to use speakers with an adequate power rating. If you use small capacity speakers, they may be damaged. [. . . ] Place the fuse in the power supply lead as close as possible to the car battery. Make sure that the leads to be connected to the +12 V and GND terminals of this unit respectively must be larger than 10-Gauge (AWG-10) or with the sectional area of more than 5 mm 2. Attach the supplied rubber bushing to the drilled hole to which you intend to route the extended power supply lead. Routing the lead through the hole without the rubber bushing may damage the coating of the lead. [. . . ]