Pyramid PB1644X User Manual

congratulations...
On your purchase of a Pyramid Signature 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 PB744,PB844 and PB1644, you’ll know you
made the right choice with a Pyramid Power
amplifier.
23
precautions
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.
If you need to replace the power fuse, do so only with a fuse
identical to that supplied with the amplifier. Using a fuse of a
different type or rating may result in damage that isn’t covered
in the manufacturer’s warranty.
.
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.
notes

Pyramid PB1644X Specifications

General

Channels	4
Impedance	4 Ohm
Minimum Impedance	2 Ohm
Signal to Noise Ratio	>90dB
Bass Boost	0-18 dB
Fuse Rating	30A x 2
Low Pass Crossover	50Hz - 250Hz
Dimensions	2.25'' H x 10.12'' W x 14'' L
Input Sensitivity	0.2V - 6V
Crossover	Variable

Summary

Pyramid Amplifier Congratulations

Pyramid Amplifier Precautions

Safe Amplifier Operation

Safety instructions for amplifier operation and mounting to prevent damage.

Wire Connection Protection

Mount amplifier to protect wire connections from damage by objects.

Power Connection Safety

Disconnect battery before making power connections; turn off equipment.

Power Fuse Replacement

Replace power fuse only with identical type and rating to avoid warranty issues.

Pyramid Amplifier Troubleshooting Guide

Protection Circuitry Overview

Built-in protection circuitry disables amplifier for overload, short circuit, or temperature issues.

Troubleshooting No Audio Output

Steps to troubleshoot no audio output, checking connections and signal source.

Troubleshooting Single Channel Output

Steps to troubleshoot when only one audio channel is functioning.

Troubleshooting Weak Audio Output

Adjust input level control to improve weak audio output.

Troubleshooting Audio Noise

Troubleshooting common audio noise issues like engine whine or popping.

Pyramid Amplifier General Features

PB744 Amplifier Features

Features and specifications for the Pyramid PB744 amplifier.

PB844 Amplifier Features

Features and specifications for the Pyramid PB844 amplifier.

PB1644 Amplifier Features

Features and specifications for the Pyramid PB1644 amplifier.

Pyramid Amplifier Mounting and Installation

Amplifier Mounting Procedure

Procedure for marking and drilling mounting holes for the amplifier.

Electrical Connection Guidelines

Guidelines for making electrical connections, including wire gauge and battery connection.

Power Fuse Information

Information on power fuses, their protective function, and replacement guidelines.

Pyramid Amplifier Speaker Connections

PB1644 4-Channel Speaker Connections

Speaker connection diagram for the 4-channel PB1644 amplifier.

Pyramid Amplifier Features and Controls

PB744 2-Channel Features and Controls

Features and controls overview for the 2-channel PB744 amplifier.

Pyramid Amplifier Features and Specifications

PB744 2-Channel Specifications

Detailed specifications for the Pyramid PB744 2-channel amplifier.

Pyramid Amplifier Speaker Connections

PB1644 4-Channel Speaker Connections

Speaker connection diagrams for the 4-channel PB1644 amplifier in different modes.

Pyramid Amplifier Speaker Connections

PB844 4-Channel Speaker Connections

Speaker connection diagrams for the 4-channel PB844 amplifier.

Pyramid Amplifier Features and Controls

PB844 4-Channel Features and Controls

Features and controls overview for the 4-channel PB844 amplifier.

Pyramid Amplifier Features and Specifications

PB844 4-Channel Specifications

Detailed specifications for the Pyramid PB844 4-channel amplifier.

Pyramid Amplifier Speaker Connections

PB844 4-Channel Output Modes

Speaker connection diagrams for the 4-channel PB844 amplifier in different output modes.

Pyramid Amplifier Speaker Connections

PB744 2-Channel Speaker Connections

Speaker connection diagrams for the 2-channel PB744 amplifier.

Pyramid Amplifier Features and Controls

PB1644 4-Channel Features and Controls

Features and controls overview for the 4-channel PB1644 amplifier.

Pyramid Amplifier Features and Specifications

PB1644 4-Channel Specifications

Detailed specifications for the Pyramid PB1644 4-channel amplifier.

Pyramid Mono Connections

PB844/PB1644 Mono Input Connections

Diagrams for 4-channel mono input connections using low-level RCA inputs.

Pyramid 2/4 Channel Input Connections

4-Channel Input Connections

Diagrams for 4-channel input connections using low-level RCA inputs.

2-Channel Input Connections

Diagrams for 2-channel input connections using low-level RCA inputs.

Pyramid Electrical Connections

PB744 2-Channel Electrical Connections

Diagram showing electrical connections for the 2-channel PB744 amplifier.

Pyramid Electrical Connections

PB844 4-Channel Electrical Connections

Diagram showing electrical connections for the 4-channel PB844 amplifier.

Pyramid Mono Input Connections

PB744 2-Channel Mono Input

Diagram for 2-channel mono input connections using low-level RCA inputs.

Pyramid Stereo Input Connections

PB744 2-Channel Stereo Input

Diagram for 2-channel stereo input connections using low-level RCA inputs.

Pyramid Electrical Connections

PB1644 4-Channel Electrical Connections

Diagram showing electrical connections for the 4-channel PB1644 amplifier.