The Wharfedale NOVA 15 is an active subwoofer with a 380 mm driver and an ABR radiator, powered by a 360 W Class-D amplifier. It reaches down to 28 Hz at -6 dB.

The NOVA 15 replaces the bass-reflex port with a 380 mm ABR auxiliary radiator with an SPL paper cone. This radiator fires downward, on a double suspension, and works with the active driver. With no port, the subwoofer avoids turbulence, chuffing noise and compression. The manufacturer intends it for large rooms, with extension to 28 Hz at -6 dB.
The 380 mm (15-inch) long-excursion driver sits on the front face. Aluminium shorting rings are built into the motor. They reduce inductance modulation as the voice coil moves in the magnetic gap, and so distortion, and transients stay sharp. The subwoofer weighs 47.8 kg.
The Class-D amplifier delivers 360 W rated and 770 W peak. The DSP drives a dynamic equaliser that adjusts the response to the listening level. Two modes are built in: Music, faster and better matched to the main speakers, and Cinema, more expansive for film soundtracks. On standby, consumption stays below 0.5 W.
The crossover frequency is adjustable from 40 to 160 Hz, with phase and level controls. The stereo line input (2 x RCA) accepts LFE on the R channel, and the high-level input uses four 4 mm terminals. A stereo line output (2 x RCA), a 12 V trigger and a USB update port complete the connections. The subwoofer measures 540 mm wide, 549 mm high with base and feet, and 607 mm deep with grille and terminals.
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