HIFONICS BRL4000-1 4000W Mono Block Amplifier

The HIFONICS BRL4000-1 is a one-channel mobile amplifier designed for high-output subwoofer systems. Its mono configuration concentrates its output into a single channel, making it suited to installations built around one or more appropriately wired subwoofers. It is intended for enthusiasts upgrading beyond the power available from a factory radio or small amplifier.

Rated output is listed at 1 x 4000 watts at 1 ohm, 1 x 2800 watts at 2 ohms, and 1 x 1500 watts at 4 ohms. This gives installers options when matching the amplifier to a subwoofer system's final impedance. Proper impedance planning, power wiring, and charging-system capacity are important for a system at this output level.

The BRL4000-1 uses a Super D Class design and half-bridge topology intended to support efficient high-power operation. An iron-core transformer and ultra-low-EMI design are part of its power-supply approach. A mass-loaded extruded aluminum heat sink helps manage heat during sustained use.

For tuning, the amplifier provides variable high-pass and low-pass crossover controls, adjustable bass boost, and a 0.2 to 9V input-voltage range. Its illuminated HIFONICS logo can be set to constant blue lighting, VU meter mode, or off. In VU mode, the logo responds to audio level and can assist with gain-setting observation.

The BRL4000-1 fits into a dedicated bass upgrade using RCA-level signal from a compatible source unit. A wired bass remote is included for adjusting bass level relative to the amplifier setting from the driver's seat. Built-in protection circuits monitor voltage, short-circuit, overcurrent, and thermal conditions to help safeguard the amplifier and vehicle audio system.

Key Features

• Mono Output: Delivers one amplified channel for a dedicated subwoofer system.
• 1-Ohm Power Rating: Rated for 4000 watts through one channel at 1 ohm.
• Super D Class Design: Supports efficient operation in a compact mobile-amplifier format.
• Variable Crossovers: Lets installers tailor the passband to the connected speakers.
• VU Meter Logo: Selectable logo lighting can visually follow music signal level.
• Included Bass Remote: Provides convenient adjustment of bass level from the cabin.

Design & Installation

The BRL4000-1 has a black chassis with a mass-loaded extruded aluminum heat sink for thermal management. Its clean multi-layer PCB construction uses surface-mount components, while nickel-plated RCA connections are designed to resist corrosion. Molded power, ground, and speaker terminals are angled to support organized cable routing.

Mount the amplifier securely in a location with adequate airflow and keep signal wiring separated from power wiring where practical. The quick-start guide specifies 0 AWG power cable and an external 350A fuse for this model; the amplifier's listed power/ground terminal size is 2 AWG. Use subwoofers wired to a final load within the amplifier's supported 1-ohm minimum impedance and have a qualified installer assess vehicle electrical-system requirements.