congratulations... on your purchase of a Pyramid Royal Red Series amplifier. This amplifier extends the Pyramid tradition into a totally new series of amps, designed from the ground up to deliver the power, performance and flexibility the modern car audio enthusiast demands. When you check the list of features offered by the PB445X, PB545X, PB645X, PB845X, PB945X, PB1045X and PB1845X, you’ll know you made the right choice with a Pyramid Power amplifier.
table of contents general features 2-3 PB645X/PB845X/1045X/1845X features and specifications PB445X PB545X PB945X PB645X/PB845X PB1045X/PB1845X 4-5 6-7 8-9 10-11 12-13 14 15 stereo input connections PB445X/545X/945X 16 mono input connections PB445X/545X/945X 17 2/4 channel input connections PB645X/PB845X/1045X/1845X 18 19 mono input connections PB645X/PB845X/1045X/1845X 20 high level mono input connections PB645X/PB845X/1045X/1845X 21 speaker connections PB445X/545X/945X electrical c
general features PB445X PB545X PB945X PB645X · 300 Watts x 2 Output · 600 Watts x 1 Bridged Output · Variable Hi/Lo Electronic Crossover Network · Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Input · Power ON LED Indicator · LED Protection Indicator · S/N Ratio: > 95 dB · THD: <0.
general features PB845X PB1045X PB1845X · 300 Watts x 4 Output · 600W x 2 Bridged Output (300W x 2 + 600W x 1) · Dual Variable Hi/Lo Electronic Crossover Network · Dual Variable Bass Boost (0 - +18 dB @ 60Hz) · Variable Input Level (Gain) Control · Remote Turn On/Off · Gold Plated RCA Inputs · High Level MOLEX Inputs · Power ON LED Indicator · LED Protection Indicator · Remote Bass Boost · S/N Ratio: > 95 dB · THD: <0.
features and controls 2 ch amp PB 445X input level control pb445X crossover mode selector bass boost level high pass frequency control low pass frequency control 4 protection LED high level inputs low level inputs power LED speaker connections power terminals power fuse
features and specifications 2 ch amp PB 445X crossover mode selector when used with normal, full range systems, set this switch to “FULL.” If you wish to use the internal crossover to power a driver of specific frequency range, use the “LOWPASS” or “HIGHPASS” settings. input level control use this control to match the outputs of your head unit to the amplifier.
features and controls 2 ch amp PB 545X input level control pb545X crossover mode selector bass boost level high pass frequency control low pass frequency control 6 high level inputs Remote Bass Boost low level inputs protection LED power LED speaker connections power terminals power fuse
features and specifications 2 ch amp PB 545X crossover mode selector when used with normal, full range systems, set this switch to “FULL.” If you wish to use the internal crossover to power a driver of specific frequency range, use the “LOWPASS” or “HIGHPASS” settings. input level control use this control to match the outputs of your head unit to the amplifier.
features and controls 2 ch amp PB 945X input level control pb945X crossover mode selector bass boost level high pass frequency control low pass frequency control 8 high level inputs Remote Bass Boost low level inputs protection LED power LED speaker connections power terminals power fuse
features and specifications 2 ch amp PB 945X crossover mode selector when used with normal, full range systems, set this switch to “FULL.” If you wish to use the internal crossover to power a driver of specific frequency range, use the “LOWPASS” or “HIGHPASS” settings. input level control use this control to match the outputs of your head unit to the amplifier.
features and controls 4 ch amp PB 645X • PB845X pb645X pb845X ch 3/4 high pass frequency control ch 1/2 high pass frequency control ch 3/4 crossover mode selector switch ch 1/2 crossover mode selector switch ch 3/4 input level control ch 3/4 bass boost level control ch 3/4 low pass frequency control ch 1/2 input level control ch 1/2 bass boost level control ch 1/2 low pass frequency control ch 3/4 low level inputs ch 3/4 high level inputs Remote Bass Boost(PB645X without) power LED ch 1/2 high leve
features and specifications 4 ch amp PB 645X • PB845X 645X PB845X PB dual crossover mode selectors when used with normal, full range systems, set these switches to “FULL.” If you wish to use the internal crossovers to power a driver of specific frequency range, use the “LOWPASS” or “HIGHPASS” settings. dual input level controls use these controls to match the outputs of your head unit to the amplifier.
features and controls 4 ch amp PB 1045X • PB1845X ch 3/4 high pass frequency control ch 1/2 high pass frequency control ch 3/4 crossover mode selector switch ch 1/2 crossover mode selector switch ch 3/4 input level control ch 3/4 bass boost level control ch 3/4 low pass frequency control ch 1/2 input level control ch 1/2 bass boost level control ch 1/2 low pass frequency control pb1045X pb1845X 12 ch 3/4 low level inputs ch 3/4 high level inputs Remote Bass Boost power LED protection LED ch 1/2 h
features and specifications 4 ch amp PB 1045X • PB1845X 1045X PB1845X PB dual crossover mode selectors when used with normal, full range systems, set these switches to “FULL.” If you wish to use the internal crossovers to power a driver of specific frequency range, use the “LOWPASS” or “HIGHPASS” settings. dual input level controls use these controls to match the outputs of your head unit to the amplifier.
electrical connections 2 ch amp PB445X • PB545X • PB945X pb445X pb545X pb945X 14 12V battery head unit to remote turn-on +12V
electrical connections 4 ch amp PB645X • PB845X • PB1045X• PB1845X PB645X • PB845X • PB1045X pb645X pb845X pb1045X pb1845X 12V battery PB1845X head unit to remote turn-on +12V 12V battery head unit to remote turn-on +12V 15
stereo input connections 2 ch amp PB445X • PB545X • PB945X using low level inputs pb445X pb545X pb945X head unit L/R Audio Outputs using high level inputs head unit L L R R wiring harness from spealer terminals 16 PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time!
mono input connections 2 ch amp PB445X • PB545X • PB945X using low level inputs pb445X pb545X pb945X head unit To a second amplifier Y Adaptors using high level inputs head unit To a second amplifier L L R wiring harness R wiring harness from spealer terminals 17 PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time!
2/4 channel input connections 4 ch amp PB645X • PB845X • PB1045X• PB1845X 4 CH input connections using low level inputs pb645X pb845X pb1045X pb1845X L/R REAR Audio Outputs L/R FRONT Audio Outputs 2 CH input connections using low level inputs L Y adaptors R head unit 18
high level input connections 4 ch amp PB645X • PB845X • PB1045X• PB1845X 4 CH floating ground connections pb645X pb845X pb1045X pb1845X 19 4 CH harness wiring for common ground connections CH 3/4 FRONT L R L ORANGE ORANGE BLACK BLACK BLACK BLACK ORANGE ORANGE from speaker terminals PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! CH 1/2 R REAR FRONT L R L ORANGE R REAR ORANGE BLACK BLACK BLACK BLACK ORANGE ORANGE from speaker terminal
mono input connections 4 ch amp PB645X • PB845X • PB1045X• PB1845X 4 CH mono input connections using low level inputs pb645X pb845X pb1045X pb1845X head unit LEFT REAR Audio Outputs RIGHT REAR Audio Outputs LEFT FRONT Audio Outputs RIGHT FRONT Audio Outputs 2 CH mono input connections using low level inputs L Y adaptors R 20
high level mono input connections 4 ch amp PB645X • PB845X • PB1045X• PB1845X 4 CH floating ground connections pb645X pb845X pb1045X pb1845X CH 3/4 21 CH 1/2 R L ORANGE ORANGE BLACK BLACK BLACK BLACK ORANGE L ORANGE from speaker terminals PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! R ORANGE ORANGE BLACK 4 CH harness wiring for common ground connections BLACK BLACK BLACK ORANGE ORANGE from speaker terminals
speaker connections 2 ch amp PB445X • PB545X • PB945X Stereo Output Mode pb445X pb545X pb945X 22 Bridged Mono Output Mode LEFT speaker RIGHT speaker speaker MINIMUM SPEAKER IMPEDANCE 4 OHMS!
speaker connections 4 ch amp PB645X • PB845X • PB1045X• PB1845X 4 CH Output Mode pb645X pb845X pb1045X pb1845X L REAR speakers R Bridged Dual Mono Output Mode R FRONT speakers 23 L speakers L L R MINIMUM SPEAKER IMPEDANCE 4 OHMS! MINIMUM SPEAKER IMPEDANCE 4 OHMS! R
speaker connections 4 ch amp PB645X • PB845X • PB1045X• PB1845X 2 CH Bridged Output Mode with Subwoofer Output pb645X pb845X pb1045X pb1845X MINIMUM SPEAKER IMPEDANCE 4 OHMS! F 24 SUBWOOFER L SUBWOOFER R SPEAKERS MINIMUM SPEAKER IMPEDANCE 4 OHMS! R L
mounting and installation mounting Your new Pyramid Royal Red 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.
protection circuitry troubleshooting The built-in protection circuitry in the Pyramid Royal Red amplifiers will disable the amplifier if it senses an input overload, a speaker short circuit, or extreme temperature conditions. No output. Confirm that all terminal strip connections are secure and tight. When the protection circuit is activated by any of these conditions, the Protection LED will be illuminated. Confirm that the audio signal source (car radio, equalizer, etc.
precautions notes Do not operate the amplifier when it is unmounted. Attach all audio system components securely within the automobile to prevent damage, especially in an accident. 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.
