User manual PYRAMID PS7KX

[. . . ] when one or both of the crossover selector switches is in "low pass" mode, one can set the upper frequency limit for audio program sent to the speakers. when the one or both of crossover selector switch is in "high pass" mode, one can set the lower frequency limit for audio program sent to the speakers. Plug in the Remote Bass Boost Control wire in here. this control permits adjustment of the bass level up to an increase of approximately 18 dB in either or both pairs of channels. [. . . ] when the one or both of crossover selector switch is in "high pass" mode, one can set the lower frequency limit for audio program sent to the speakers. Plug in the Remote Bass Boost Control wire in here. this control permits adjustment of the bass level up to an increase of approximately 18 dB in either or both pairs of channels. this amp features gold-plated RCA input jacks for high impedance input. Use these with car stereo output which uses RCA-type connector cables. if your car stereo lacks RCA-type output jacks, you may connect speaker output leads to these input connectors. this indicator is illuminated when power is applied. this indicator is illuminated when built-in protection circuitry is activated. the fuse protects the amplifier and your car's electrical system from short circuit conditions. use these connectors to deliver power, ground and remote turn-on control to the amplifier. these terminals are 14K gold plated to guarantee high conductivity and minimum signal loss. PB-1038GX 75 Watts x 4 125 Watts x 4 1000 Watts x 4 dual input level controls 15 Hz-30 KHz 10K Ohms 100 Ohms 250mV 2. 5V 14. 4V DC Neg. If you ever need to replace the fuse in your Pyramid Royal Blue 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 Royal Blue Series 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 be restarted by turning the remote power OFF and then ON again. troubleshooting No output. Confirm that all terminal strip connections are secure and tight. Both the +12V and the Remote terminals must have +12v referenced to chassis ground. Confirm that the audio signal source (car radio, equalizer, etc. ) is connected and is supplying output signal. To check if the amp is supplying signal, unplug the cables from the signal source (but leave them plugged into the amp). [. . . ] Do not mount this amplifier so that the wire connections are unprotected, or in a pinched condition, or likely to be damaged by nearby objects. Before making or breaking power connections in your system, disconnect the vehicle battery. Confirm that your head unit or other equipment is turned off while connecting the input jacks and speaker terminals. If you need to replace the power fuse, do so only with a fuse identical to that supplied with the amplifier. [. . . ]