Audiobank P8000-1D Monoblock Car Audio Amplifier

The Audiobank P8000-1D is a single-channel car audio amplifier designed for a dedicated subwoofer or bass channel in a 12-volt vehicle audio system. It accepts compatible subwoofer wiring down to a 1-ohm load and provides bass-focused controls for system tuning. This makes it suited to upgrades where full-range speakers are powered separately and the amplifier is assigned to low-frequency reproduction.

Published output figures are maximum-power ratings of 8,000 watts at 1 ohm, 5,000 watts at 2 ohms, and 4,000 watts at 4 ohms. An RMS power specification is not confirmed in the available product information, so subwoofer selection should not be based on the maximum ratings alone. Confirm the final speaker impedance, subwoofer RMS handling, and vehicle electrical capacity before installation.

The P8000-1D provides a continuously variable low-pass crossover from 40 to 180 Hz to keep its output focused on lower frequencies. Its variable bass boost offers adjustment from 0 to +12 dB, while the variable input gain helps match amplifier sensitivity to the source unit. A remote subwoofer level control is specified for convenient adjustment of bass output from the driver’s seat.

For source compatibility, this monoblock amplifier is specified with line-level and speaker-level inputs. That allows connection to many aftermarket receivers as well as systems that need to use speaker-output signal. The listed frequency response is 17 to 180 Hz, supporting its role as a bass-channel amplifier rather than a full-range multi-channel design.

The amplifier uses a MOSFET pulse-width-modulated power supply and is marketed as a Class D monoblock design. Soft turn-on, remote turn-on/turn-off capability, and LED power and protection indicators support normal vehicle-audio operation. Thermal and speaker-short protection circuitry are specified to help protect the amplifier when an operating fault occurs.

Key Features

• 1-Ohm Stable Operation: Supports compatible subwoofer wiring configurations down to a 1-ohm load.
• Variable Low-Pass Crossover: Adjusts the bass passband from 40 to 180 Hz.
• Variable Bass Boost: Provides 0 to +12 dB of low-frequency adjustment.
• Remote Bass Level Control: Lets the driver adjust subwoofer output level conveniently.
• Line And Speaker-Level Inputs: Supports connection with a range of factory or aftermarket sources.
• Protection Monitoring: Thermal and speaker-short protection work with power and protection LEDs.

Design & Installation

The P8000-1D uses a heavy-duty aluminum-alloy heatsink intended to help dissipate operating heat. It also features nickel-plated RCA connections, LED status indicators, and three onboard 40-amp fuses. The compact surface-mount chassis is listed at 14 x 9 x 4 inches.

Mount the amplifier securely on a stable surface with clearance around the heatsink and away from moisture or excessive heat. Use appropriately fused power wiring, a solid chassis-ground connection, a remote turn-on lead, and speaker wiring that produces no less than the rated 1-ohm minimum load. Set gain, crossover, and bass boost conservatively during initial setup, then verify that the system remains free of distortion and protection faults.