Pyramid PB1045X User Manual

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.

Pyramid PB1045X Specifications

General

Channels	4
Fuse Rating	25A
Impedance	4 Ohms
Signal to Noise Ratio	90 dB
Crossover Type	Variable
Low-Pass Crossover Frequency	250Hz
Minimum Impedance Bridged	4 Ohms

Summary

General Features

PB445X Features

Details the specific features and capabilities of the PB445X amplifier.

PB545X Features

Details the specific features and capabilities of the PB545X amplifier.

PB945X Features

Details the specific features and capabilities of the PB945X amplifier.

PB645X Features

Details the specific features and capabilities of the PB645X amplifier.

PB845X Features

Details the specific features and capabilities of the PB845X amplifier.

PB1045X Features

Details the specific features and capabilities of the PB1045X amplifier.

PB1845X Features

Details the specific features and capabilities of the PB1845X amplifier.

PB445X Features and Controls

Top Panel Controls

Overview of front panel adjustment knobs and switches for the PB445X amplifier.

Rear Panel Connections and Indicators

Details rear panel inputs, outputs, power, and status LEDs for the PB445X.

PB445X Specifications

Output Power and Frequency Response

Details amplifier output power ratings and frequency range for the PB445X.

Input Impedance and Sensitivity

Covers input impedance and sensitivity specifications for the PB445X.

Power Supply and Speaker Impedance

Specifies power supply voltage and matching speaker impedance for the PB445X.

Dimensions and Current Draw

Specifies physical dimensions and maximum current draw for the PB445X.

PB545X Features and Controls

Top Panel Controls

Overview of front panel adjustment knobs and switches for the PB545X amplifier.

Rear Panel Connections and Indicators

Details rear panel inputs, outputs, power, and status LEDs for the PB545X.

PB545X Specifications

Output Power and Frequency Response

Details amplifier output power ratings and frequency range for the PB545X.

Input Impedance and Sensitivity

Covers input impedance and sensitivity specifications for the PB545X.

Power Supply and Speaker Impedance

Specifies power supply voltage and matching speaker impedance for the PB545X.

Dimensions and Current Draw

Specifies physical dimensions and maximum current draw for the PB545X.

PB945X Features and Controls

Top Panel Controls

Overview of front panel adjustment knobs and switches for the PB945X amplifier.

Rear Panel Connections and Indicators

Details rear panel inputs, outputs, power, and status LEDs for the PB945X.

PB945X Specifications

Output Power and Frequency Response

Details amplifier output power ratings and frequency range for the PB945X.

Input Impedance and Sensitivity

Covers input impedance and sensitivity specifications for the PB945X.

Power Supply and Speaker Impedance

Specifies power supply voltage and matching speaker impedance for the PB945X.

Dimensions and Current Draw

Specifies physical dimensions and maximum current draw for the PB945X.

PB645X / PB845X Features and Controls

CH 3/4 Controls and Connections

Details controls and connections for channels 3 and 4 on 4-channel amps.

CH 1/2 Controls and Connections

Details controls and connections for channels 1 and 2 on 4-channel amps.

PB645X / PB845X Specifications

PB645X Specifications

Details the specific specifications for the PB645X 4-channel amplifier.

PB845X Specifications

Details the specific specifications for the PB845X 4-channel amplifier.

PB1045X / PB1845X Features and Controls

CH 3/4 Controls and Connections

Details controls and connections for channels 3 and 4 on 4-channel amps.

CH 1/2 Controls and Connections

Details controls and connections for channels 1 and 2 on 4-channel amps.

PB1045X / PB1845X Specifications

PB1045X Specifications

Details the specific specifications for the PB1045X 4-channel amplifier.

PB1845X Specifications

Details the specific specifications for the PB1845X 4-channel amplifier.

2-Channel Electrical Connections

Power, Ground, and Remote Wiring

Illustrates how to connect power, ground, and remote turn-on wires.

Speaker Wiring

Shows how to connect speakers in stereo or bridged mode.

4-Channel Electrical Connections

Power, Ground, and Remote Wiring

Illustrates wiring power, ground, and remote turn-on for 4-channel amps.

Speaker Wiring

Shows speaker connections for 4-channel and bridged mono modes.

2-Channel Stereo Input Connections

Using Low Level RCA Inputs

Explains RCA connections for stereo audio signals from the head unit.

Using High Level Speaker Inputs

Explains speaker wire connections for stereo audio signals from the head unit.

2-Channel Mono Input Connections

Using Low Level RCA Inputs

Explains RCA connections for mono audio signals to a second amplifier.

Using High Level Speaker Inputs

Explains speaker wire connections for mono audio signals to a second amplifier.

4-Channel Input Connections

4 CH Input Connections (Low Level)

Details low-level RCA connections for 4-channel amplifiers.

2 CH Input Connections (Low Level)

Details low-level RCA connections for 2-channel configurations.

4-Channel High Level Input Connections

4 CH Floating Ground Wiring

Wiring diagram for floating ground high-level inputs on 4-channel amps.

4 CH Common Ground Wiring

Wiring diagram for common ground high-level inputs on 4-channel amps.

4-Channel Mono Input Connections

4 CH Mono Input Connections (Low Level)

Details low-level RCA connections for mono output to a second amp.

2 CH Mono Input Connections (Low Level)

Details low-level RCA connections for 2-channel mono output.

4-Channel High Level Mono Input Connections

4 CH Floating Ground Wiring

Wiring diagram for floating ground mono high-level inputs.

4 CH Common Ground Wiring

Wiring diagram for common ground mono high-level inputs.

2-Channel Speaker Connections

Stereo Output Mode Wiring

Shows how to connect speakers for stereo sound output.

Bridged Mono Output Mode Wiring

Illustrates connecting speakers for bridged mono operation.

4-Channel Speaker Connections

4 CH Output Mode Wiring

Shows speaker connections for 4-channel output.

Bridged Dual Mono Output Mode Wiring

Illustrates connecting speakers for bridged dual mono operation.

2-Channel Bridged Output with Subwoofer

Subwoofer Connection Diagram

Details how to connect a subwoofer in bridged mode.

Speaker Connection Diagram

Shows speaker connections for bridged operation with a subwoofer.

Mounting and Installation

Location Selection and Mounting Procedure

Guidelines for selecting a mounting location and securing the amplifier.

Electrical Connection Guidelines

Recommendations for wiring power, ground, and remote connections.

About Power Fuses

Information on the purpose and replacement of built-in fuses.

Protection Circuitry and Troubleshooting

No Output Troubleshooting Steps

Steps to diagnose and resolve a complete lack of audio output.

Single Channel or Weak Output Issues

Solutions for problems with only one channel working or low output.

Audio Noise Troubleshooting Steps

Guidance on identifying and fixing unwanted noise in the audio signal.

Precautions and Notes

Operating and Mounting Safety

Safety guidelines for operating and mounting the amplifier.

Fuse Replacement Procedure

Instructions for safely replacing the power fuse.