Hifonics BRW6D4 6.5" Dual 4-Ohm Car Subwoofer

The Hifonics BRW6D4 is a 6.5-inch component car subwoofer designed to add dedicated low-frequency output to a vehicle audio system. It is intended for installations where full-range car speakers need support reproducing bass. Because it is a component subwoofer, it requires both a suitable enclosure and an external amplifier.

This model uses dual 4-ohm voice coils, giving system builders wiring flexibility when matching a compatible amplifier. It is rated for 300 watts RMS and 600 watts maximum power. The compact 6.5-inch format can suit custom multi-subwoofer systems or applications with limited enclosure space.

A 2-inch voice coil is mounted on a vented aluminum former to help exchange heat during operation. The vented construction is designed to support thermal management at the voice coil. This engineering supports sustained use when the subwoofer is powered and set up appropriately.

The BRW6D4 uses a dual poly-cotton spider with double centering, along with a pressure-treated, double-stitched ribbed foam surround. These suspension components are designed to help keep cone movement controlled. The result is a subwoofer built around stable piston motion for bass reproduction.

Its heavy-gauge, powder-coated aluminum die-cast basket incorporates back venting, while the motor assembly is also vented. Dual 70-ounce magnets form the high-energy motor structure. These features make the BRW6D4 a practical choice for a custom bass upgrade built around an externally amplified enclosure.

Key Features

• 300W RMS Rating: Supports amplifier matching around its continuous power specification.
• Dual 4-Ohm Voice Coils: Provides wiring options for compatible amplifier loads.
• 2-Inch Voice Coil: Uses a substantial coil for this compact subwoofer size.
• Vented Aluminum Former: Helps exchange heat around the voice coil.
• Dual Poly-Cotton Spider: Supports controlled cone movement with double centering.
• Die-Cast Aluminum Basket: Provides a rigid, back-vented mounting structure.

Design & Installation

The BRW6D4 combines a heavy-gauge, powder-coated aluminum die-cast basket with a vented high-energy motor assembly and dual 70-ounce magnets. Its pressure-treated, double-stitched ribbed foam surround works with the dual poly-cotton spider suspension. The basket and motor use venting intended to promote airflow around the assembly.

Install this subwoofer in a properly designed enclosure and power it with an external amplifier matched to its 300-watt RMS rating and final wired impedance. Confirm the vehicle's available mounting clearance, enclosure volume, amplifier minimum impedance, and wiring plan before purchase, as mounting dimensions and enclosure recommendations are not published in the confirmed product information. Professional installation is advisable for custom enclosure construction or multi-subwoofer wiring.