RS Series 4" (100 mm) Component Mid-Range Woofer Pair

The ARC Audio RS 4.0 is a premium 4-inch midrange driver crafted for high-resolution, active audio systems where accuracy, detail, and tonal purity are critical. As part of ARC’s flagship Reference Series, the RS 4.0 is designed to complement multi-channel DSP setups, excelling in dedicated midrange applications with an emphasis on natural timbre and low distortion. Its shallow-mount architecture makes it ideal for installations with limited space, without compromising sound quality.

At the core of the RS 4.0 is a hard-pressed composite paper cone, reinforced with bamboo and papyrus fibres. This blend offers a unique combination of rigidity and damping, producing a smooth, articulate midrange response that captures the nuances of vocals and acoustic instruments with lifelike clarity. A semi-parabolic dust cap, carefully designed with vertical internal splines, reduces cone break-up and distortion under high-excursion conditions, ensuring faithful sound reproduction even at higher volumes.

The motor structure is built around a powerful neodymium magnet and includes an extended copper shorting ring that minimizes inductance distortion while broadening the usable frequency range. The die-cast aluminium basket provides structural rigidity and features integrated venting to improve airflow and cooling across the CCAW (copper-clad aluminium wire) voice coil, helping to maintain performance under demanding conditions. A low-shore rubber surround and progressive flat spider further enhance the driver’s transient response and linearity.

With its refined material selection, compact dimensions, and advanced engineering, the RS 4.0 is a go-to choice for competitive car audio builds and enthusiasts seeking ultra-precise, emotionally engaging midrange reproduction. Whether used as part of a 3-way front stage or as a dedicated midrange in a fully active setup, the ARC Audio RS 4.0 delivers a transparent, dynamic listening experience that sets it apart in its class.