User manual SONY XM-3520

[. . . ] Choose the mounting location carefully so that the unit will not interfere with the normal movements of the driver and so 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 1/8 inches (in. [. . . ] The ground lead is not securely connected. One or more of the switches is settled between settings (i. Features a 2 channel-input / 5 channel-output function that makes it possible to carry a 2-way multi system even with a single line output from the car stereo. Low-pass filter, high-pass filter circuit are built* Pulse power supply This unit has a built-in power regulator which converts the power supplied by the DC 12 V car battery into high speed pulses using a semiconductor switch. These pulses are stepped up by the built-in pulse transformer and separated into both positive and negative power supplies before being converted into direct current again. This is to regulate fluctuating voltage from the car battery. This light weight power supply system provides a highly efficient power supply with a low impedance output. OFFSET: Lights up in red when the voltage going out to the Speaker terminal or the Pin Jack is too high. 3 TEST TONE button When the button is pressed, if the test tone can be heard from the connected speakers, operation is normal. 46 Cut-off frequency adjustment control Sets the cut-off frequency (50­300 Hz) for the high-pass or low-pass filters. 5 LEVEL adjustment control The input level can be adjusted with this control. Connect the +12 V power supply lead only after all the other leads have been connected. Be sure to connect the ground lead of the unit securely to a metal surface of the car. A loose connection may cause the amplifier to malfunction. Be sure to connect the remote control lead of the car audio to the remote terminal. When using a car audio without a remote output on the amplifier, connect the remote input terminal (REMOTE) to the accessory power supply. Use the power supply lead with a fuse attached (40 A). 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 are larger than 10-Gauge (AWG10) or have a sectional area of more than 7/32 in. When using the optional RC-46 power amplifier connecting cord, consult that manual for proper use. Note Tighten the screws firmly, but be careful not to apply too much force* as doing so may damage the screws. * The torque value should be less than 8. [. . . ] If you have any questions or problems concerning your unit that are not covered in this manual, please consult your nearest Sony dealer. 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. [. . . ]