Audiobank P1601 Monoblock Class AB Car Amplifier

The Audiobank P1601 is a single-channel car audio amplifier designed to supply dedicated power for a subwoofer system. Its monoblock layout concentrates on low-frequency reproduction, making it suitable for a bass upgrade separate from full-range door-speaker amplification. It can be used with aftermarket head units, processors, or compatible factory-audio integrations.

This amplifier is intended for listeners building an entry-level or replacement subwoofer system who need selectable bass controls and support for common 2- or 4-ohm subwoofer loads. It accepts both RCA line-level and speaker-level input signals, helping it connect with a wider range of source units. A wired remote subwoofer-level control allows bass output to be adjusted from the listening position.

The P1601 is a Class AB monoblock amplifier with a published maximum output rating of 1,600 watts at 2 ohms and a published RMS rating of 375 watts x 1 at 4 ohms. Its frequency response is listed at 20Hz to 22kHz, while the variable low-pass crossover helps limit upper frequencies sent to the subwoofer. Gain, bass boost, phase, and subsonic controls provide useful adjustment during system tuning.

A MOSFET pulse-width-modulated power supply supports the amplifier's power section, and the aluminum-alloy heatsink is designed to help dissipate operating heat. Soft turn-on, thermal protection, and speaker-short protection are included to support normal operation and fault protection. Power and protection LEDs provide visible status indication.

The P1601 fits best in a system with a properly matched subwoofer or subwoofer combination wired to a supported 2- or 4-ohm load. Use the low-pass filter and subsonic filter to tailor the amplifier to the enclosure and subwoofer being used. Correct power, ground, remote-turn-on, input, and speaker wiring are required for a safe installation.

Key Features

• Monoblock Configuration: Directs one amplified channel toward a dedicated subwoofer system.
• 2-Ohm Stable Operation: Supports compatible subwoofer loads at 2 or 4 ohms.
• Variable Low-Pass Filter: Lets you set the upper bass cutoff from 50Hz to 250Hz.
• Subsonic Filter: Helps reduce very low frequencies below the selected setting.
• Remote Bass Level Control: Provides convenient adjustment of subwoofer output from the cabin.
• Protection Circuitry: Includes thermal and speaker-short protection for added system support.

Design & Installation

The P1601 uses a heavy-duty aluminum-alloy heatsink with a surface-mount form factor. Its control panel combines gain, low-pass crossover, subsonic filter, bass boost, and phase adjustment, along with power and protection indicators. Nickel-plated RCA connections and speaker-level inputs support common car-audio signal connections.

Mount the amplifier securely in a dry, ventilated location with clearance around the heatsink. Disconnect the negative battery terminal before installation, use appropriately sized wiring and correctly rated fuses, and keep the ground connection short and secure to clean vehicle metal. Connect only a compatible 2- or 4-ohm subwoofer load, then begin tuning with gain and bass boost set low before making gradual adjustments.