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Manafacture: Pyramid Car Audio File size: 889.71 kb File name: Language of manual:

CH 3 LOW IN LEVEL MIN MAX CH 4 HPF +18db0 35 400 Hz LPF 80 HPF 2.5k 2.5k Hz +18db0 BASS BOOST MIN MAX FREQ. CH 1 CH 2 80 Hz 35 400 Hz LPF HI IN CH4 CH3 + --+ HI IN CH2 CH1 + --+ LOW IN BASS BOOST LEVEL FULL HPF LPF FULL HPF LPF POWERPROTECT REMOTE BASS BOOST(CH3/4) head unit FREQ. CH 3 LOW IN LEVEL MIN MAX CH 4 HPF +18db0 35 400 Hz LPF 80 HPF 2.5k 2.5k Hz +18db0 BASS BOOST MIN MAX FREQ. CH 1 CH 2 80 Hz 35 400 Hz LPF HI IN CH4 CH3 + --+ HI IN CH2 CH1 + --+ LOW IN BASS BOOST LEVEL FULL HPF LPF FULL HPF LPF LEFT REAR Audio Outputs RIGHT REAR Audio Outputs pb681X pb881X pb1881X mono input connections4 ch amp PB681X • PB881X • PB1881X 20 REMOTE BASS BOOST(CH3/4) POWERPROTECT REMOTE BASS BOOST(CH3/4) POWERPROTECT 4 CH floating ground connections 4 CH harness wiring for common ground connections from speaker terminals PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! R L ORANGE ORANGE ORANGE ORANGE BLACK BLACK BLACK BLACK FREQ. CH 3 LOW IN LEVEL MIN MAX CH 4 HPF +18db0 35 400 Hz LPF 80 HPF 2.5k 2.5k Hz +18db0 BASS BOOST MIN MAX FREQ. CH 1 CH 2 80 Hz 35 400 Hz LPF HI IN CH4 CH3 + --+ HI IN CH2 CH1 + --+ LOW IN BASS BOOST LEVEL FULL HPF LPF FULL HPF LPF POWERPROTECT REMOTE BASS BOOST(CH3/4) pb681X pb881X pb1881X high level mono input connections4 ch amp PB681X • PB881X • PB1881X 21 CH 1/2 CH 3/4 R L ORANGE ORANGE ORANGE ORANGE BLACK BLACK BLACK BLACK from speaker terminals Stereo Output Mode Bridged Mono Output Mode MINIMUM SPEAKER 22 speaker connections2 ch amp PB481X • PB781X • PB1281X pb481X pb781X pb1281X RIGHT speakerLEFT speaker IMPEDANCE 4 OHMS! speaker 4 CH Output Mode CH3 CH4 GROUND +12V BATT REM BRIDGED FUSE BRIDGED + --+-+-+ -+-+ CH1 CH2 REAR speakersFRONT speakers pb681X pb881X pb1881X speaker connections4 ch amp PB681X • PB881X • PB1881X L R RL Bridged Dual Mono Output Mode MINIMUM SPEAKER IMPEDANCE 4 OHMS! REM CH3 CH4 GROUND +12V BATT BRIDGED FUSE BRIDGED + --+-+-+ -+-+ CH1 CH2 speakers LR 2 CH Bridged Output Mode with Subwoofer Output pb681X pb881X pb1881X speaker connections4 ch amp PB681X • PB881X • PB1881X 24 MINIMUM SPEAKER IMPEDANCE 4 OHMS!SPEAKERS R L REM CH3 CH4 GROUND +12V BATT BRIDGED FUSE BRIDGED + --+-+-+ -+-+ CH1 CH2 SUBWOOFER mounting and installation mounting Your new Pyramid Crystal Series amplifier comes complete with all required mounting hardware. When determining a suitable location in your vehicle for the amp, please remember that it is a high-power electronic device capable of generating high heat. For this reason, always choose a location in your vehicle which has low vibration, adequate ventilation, a minimum of dust, and no moisture. Be sure to mount the amp in such a manner as to allow reasonable airflow over the cooling fins. Mark the location for the mounting screw holes by positioning the amp where you wish to install it and use a scribe (or one of the mounting screws) inserted in each of the mounting holes to mark the mounting surface. If the mounting surface is carpeted, measure the hole centers and mark with a felt tip pen. Before attempting to drill the mounting holes, take note of any wires, lines or other devices in your vehicle which may be located behind the mounting surface! Then drill pilot holes in the mounting surface for the mounting screws and insert them. Tighten the screws securely. wiring tips 25 When making electrical connections to your amplifier, please observe the following: Use at least 8 gauge wire for power and ground connections. Wire the amplifier directly to the car battery. For the ground connection, use the shortest possible wire to a good chassis ground point. Wire the Remote connection to the auto start lead of your head unit, equalizer or power antenna. fuses About power fuses: Pyramid Crystal Series amplifiers feature built-in fuse systems. These fuses protect both the amplifier and the electrical system in your vehicle from fault conditions. If you ever need to replace the fuse in your Pyramid Crystal Series amp, use a fuse of exactly the same type and rating. A different type or rating of fuse may result in damage or fire. protection circuitry The built-in protection circuitry in the Pyramid Crystal amplifiers will disable the amplifier if it senses an input overload, a speaker short circuit, or extreme temperature conditions. When the protection circuit is activated by any of these conditions, the Protection LED will be illuminated. If this occurs, carefully inspect the system to determine the source of the problem. • If the shutdown was a result of a thermal overload condition, allow the amplifier to cool down before attempting to restart it. • If the shutdown was a result of an input overload, or speaker short circuit, be sure to correct the condition before restarting. The amplifier can b...

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