15FHW

The 15FHW is an ultra low frequency sub-woofer, designed to deliver large amounts of very low frequencies. With 91 dB 1watt / 1 meter sensitivity, you find this 15-inch sub-woofer with incredibly linear frequency response characteristics ideally assembled in sub-woofers for hi-fi, gaming, studios or cinema. The 15FHW uses a strong paper cone, along with a high excursion single roll rubber surround. Rubber surround material was specifically developed for this application. The shape of the surround roll was FEM optimized to ensure low distortion in whole working range.

Power Handling
At the core of the 15FHW is it’s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 200°C, well beyond the thermal requirements of modern professional audio systems.

REDCATT has implemented a Nomex(r) spider design to ensure long term Fs memory, consistency and diminish anomalies associated with spider deterioration.

The 15FHWX8-089 is a 15-inch cost-effective deep-bass subwoofer designed for home cinema, KTV, studio monitoring, and hi-fi systems where very low-frequency extension is the primary performance objective. With a free-air resonant frequency of 24 Hz - among the lowest available in a 15-inch driver format - the 15FHW is optimized to reproduce the full audible bass spectrum and the tactile infrasonic range required by modern object-based cinema audio formats such as Dolby Atmos and DTS:X. The driver uses a 76 mm copper voice coil on a Polyimide former rated to 200 degC, delivering 400 W AES at 8 ohms in a cost-optimized package that includes a steel basket, ferrite motor, and glass fiber reinforced paper cone - a construction approach that concentrates the acoustic performance budget in the motor system and moving assembly rather than in structural materials. The NBR rubber surround is produced using a FEM-optimized single-roll profile designed to minimize geometric nonlinearity across the full Xmax excursion range, and the Nomex spider is specified for long-term Fs consistency, ensuring that the driver's critically low resonant frequency remains stable over the service life of the installation.

Sealed alignments of 40, 60, and 80 litres produce system Qtc values of 1.53, 1.30, and 1.16 respectively, with natural -3dB points at 43, 37, and 35 Hz. These alignments are particularly suited to DSP-active subwoofer systems employing Linkwitz Transform (LT) equalization, which corrects the rising sealed response to a flat target alignment and extends usable bass output to 16-20 Hz from compact enclosures. The 40 L sealed cabinet achieves extension to approximately 20 Hz with LT correction from an enclosure of approximately 380x380x320mm external - a practical size for built-in, in-wall, and under-seat home cinema installations. The amplifier must provide headroom of approximately 11-14 dB at the target low-frequency extension point relative to the unequalized response; a high-quality Class-D amplifier of 400 W or greater with DSP LT capability is the appropriate system amplification for all three sealed alignments.

The 15FHWX8-089 is suited for: home cinema subwoofer systems requiring LFE channel reproduction to 20-30 Hz from a single 15-inch driver; KTV and entertainment venue bass cabinets where deep tactile bass impact is valued at controlled cost; professional studio monitoring subwoofer extensions for bass verification in music production, film post-production, and game audio; audiophile hi-fi subwoofers for music systems where bass guitar, double bass, pipe organ, and synthesizer sub-register reproduction is required; and multimedia subwoofer systems in themed entertainment, simulation, and exhibit environments. Its Fs=24 Hz, FEM-optimized surround, and Nomex spider make it the appropriate choice in the REDCATT portfolio for deep-bass civilian applications where cost-effectiveness and infrasonic extension take precedence over maximum sensitivity and professional output capability.