User manual SONY CDX-L450X

[. . . ] When your car has a built-in FM/AM aerial in the rear/side glass, see "Notes on the control and power supply leads. " To AMP REMOTE IN of an optional power amplifier This connection is only for amplifiers. [. . . ] When connecting this unit in combination with other stereo components, the connected car circuit's rating must be higher than the sum of each component's fuse. When no car circuits are rated high enough, connect the unit directly to the battery. The power aerial control lead (blue) supplies +12 V DC when you turn on the tuner. When your car has built-in FM/AM aerial in the rear/side glass, connect the power aerial control lead (blue) or the accessory power input lead (red) to the power terminal of the existing aerial booster. A power aerial without relay box cannot be used with this unit. Memory hold connection When the yellow power input lead is connected, power will always be supplied to the memory circuit even when the ignition key is turned off. notes on speaker connection · Before connecting the speakers, turn the unit off. Use speakers with an impedance of 4 to 8 ohms, and with adequate power handling capacities to avoid its damage. Do not connect the speaker terminals to the car chassis, or connect the terminals of the right speakers with those of the left speaker. Do not connect the ground lead of this unit to the negative (-) terminal of the speaker. Be sure to connect the earth cord before connecting the amplifier. If you connect an optional power amplifier and do not use the built-in amplifier, the beep sound will be deactivated. [. . . ] Attach part A of the front panel to part B of the unit as illustrated and push the left side into position until it clicks. When the installation and connections are completed, be sure to press the RESET button with a ballpoint pen, etc. [. . . ]