Audiobank P1604 4-Channel 1600W Bridgeable Amplifier

The Audiobank P1604 is a four-channel Class AB car audio amplifier designed to add external amplification to aftermarket speaker systems. It gives installers separate channels for front and rear speakers, or flexibility to bridge channel pairs for compatible higher-power applications. This makes it a practical component for replacing the limited power available from many factory or aftermarket head units.

The P1604 is intended for car-audio users building a basic full-range speaker system with adjustable filtering. Its channel pairs provide independent gain and crossover controls, helping match the amplifier to the output level of the source unit and the frequency range of connected speakers. It supports 2-ohm stereo operation and is bridgeable when wired according to the amplifier markings.

Class AB operation is paired with variable high-pass and low-pass crossover controls for system tuning. The high-pass filter adjusts from 80 Hz to 4 kHz, while the low-pass filter adjusts from 40 Hz to 300 Hz. A selectable full-range setting and 0 to +12 dB bass boost provide additional adjustment options.

The amplifier uses a MOSFET pulse-width-modulated power supply and a heavy-duty aluminum-alloy heatsink. Its soft turn-on circuit is designed to make startup more gradual, while power and protection LEDs provide visible operating status. Confirmed product information also lists thermal and speaker short-circuit protection circuitry.

For a system upgrade, the P1604 can be used to power four compatible speakers or two bridged speaker loads where the required impedance is maintained. RCA signal connections, a +12V power terminal, ground terminal, and remote turn-on terminal are provided on the amplifier. Proper power wiring, a solid chassis ground, suitable fusing, and careful gain setup are important for a reliable installation.

Key Features

• Four-Channel Design: Powers up to four speaker channels from one amplifier.
• Class AB Operation: Provides full-range amplification for speaker-based car audio systems.
• 2-Ohm Stable Operation: Supports compatible 2-ohm loads in stereo operation.
• Variable Crossovers: Helps direct appropriate frequencies to connected speakers.
• Bridgeable Channels: Lets paired channels support compatible bridged configurations.
• MOSFET Power Supply: Supports the amplifier's regulated internal power conversion.

Design & Installation

The P1604 uses a silver heavy-duty aluminum-alloy heatsink chassis with integrated mounting feet and vented end panels. Its connection layout places RCA inputs and tuning controls at one end, with power, ground, remote, fuse, and speaker terminals at the other. Nickel-plated RCA connectors, power/protection status LEDs, and external blade-fuse positions are part of the confirmed design.

Mount the amplifier on a secure, dry surface with airflow around the heatsink, away from direct heat and locations where ventilation is blocked. Connect it to a 12-volt vehicle electrical system using appropriate power, ground, remote-turn-on, RCA, and speaker wiring; disconnect the vehicle battery before installation. Set gain conservatively, use the HPF for full-range speakers when needed, and verify speaker impedance before using bridged operation.