User manual PIONEER CDR-850

[. . . ] The surfaces of the amplifier and any attached speakers may also heat up and cause minor burns. Thank you for purchasing this PIONEER product. To ensure proper use, please read through this manual before using this product. It is especially important that you read and observe WARNINGs and CAUTIONs in this manual. [. . . ] Extended use of the car stereo while the engine is at rest or idling may exhaust the battery. If the Protection function is turned on, the power indicator will turn off, and the amplifier will shut down. If the temperature inside the amplifier gets too high. Setting the unit What's what Output of 4 V or more, adjust level to match that of the car stereo output. If you hear too much noise when using the speaker input terminals, turn the gain control to higher level. 5 Power indicator The power indicator lights up to indicate power ON. This eliminates high range frequency and outputs low range frequency. 2 FREQ (cut off frequency) control Cut off frequency selectable from 40 Hz to 500 Hz if the LPF select switch is set to ON. 3 BASS BOOST (bass boost level control) switch You can select a bass boost level from 0 dB, 6 dB and 12 dB. 4 GAIN (gain) control If output remains low, even when the car stereo volume is turned up, turn controls to lower level. If distortion occurs when the car stereo volume is turned up, turn these controls to higher level. For other amplifiers, please follow the speaker output connection diagram for bridging shown on rear: two 8 W speakers in parallel for a 4 W load or a single 4 W speaker per channel. For any further enquiries, contact your local authorized Pioneer dealer or customer service. Connect the speaker leads to suit the mode according to the figures shown below. Ensure speakers conform to the following standards, otherwise there is a risk of fire, smoke or damage. Do not connect both the RCA input and the speaker input at the same time. The use of a special red battery and ground wire RD-223, available separately, is recommended. If the battery wire is not securely fixed to the terminal using the terminal screws, there is a risk of overheating, malfunction and injury, including minor burns. After completing all other amplifier connections, finally connect the battery wire terminal Fix the wires securely with the terminal screws. Fix the speaker wires securely with the terminal screws. 1 Use wire cutters or a utility knife to strip the end of the speaker wires to expose about 10 mm of wire and then twist the wire. To ensure proper installation, use the supplied parts in the manner specified. [. . . ] After installing the amplifier, confirm that the spare tire, jack and tools can be easily removed. Example of installation on the floor mat or chassis 1 Place the amplifier in the desired installation location. Insert the supplied tapping screws (4 mm × 18 mm) into the screw holes and push on the screws with a screwdriver so they make an imprint where the installation holes are to be located. 3 Install the amplifier with the use of supplied tapping screws (4 mm × 18 mm). [. . . ]