PV1 vs KEF R400b
The R400b's sensitivity is 111 dB against the PV1's 90 dB, its woofer 9" against 8", and its low-frequency extension 26 Hz against 18 Hz. Both share high-frequency extension (140 Hz).
AI-generated product photo — not official manufacturer imagery.
The Bowers & Wilkins PV1 is an innovative active subwoofer designed with a spherical aluminium pressure vessel enclosure that minimizes resonance and vibration. It houses two 8-inch (200 mm) long-throw mica/aluminium cone drivers arranged in an opposed, in-phase configuration to balance kinetic forces and reduce floor-borne vibrations. Powered by a 500W Class D IcePower amplifier, the PV1 delivers a frequency response from 18 Hz to 140 Hz (-3 dB at 21 Hz), with a sensitivity of 90 dB and a nominal impedance of 100 kΩ. The subwoofer features adjustable crossover points (40 Hz to 140 Hz), volume control, a 180° phase switch, and EQ curve options for flat, fatter, or fattest bass response to suit room acoustics and listener preferences. Connectivity includes line-level RCA inputs and outputs, a speaker-level input via RJ11 connector, and a headphone output. The enclosure measures approximately 335.5 mm high, 289 mm wide, and 347 mm deep, weighing 20.5 kg. Its design is inspired by diving bells and soap bubbles, providing a compact yet powerful subwoofer that produces clean, deep bass suitable for both music and home cinema applications. The PV1 is noted for its stylish appearance and exceptional sonic performance, offering tight, controlled bass without the typical cabinet coloration or vibration found in conventional subwoofers.
Driver and acoustic performance characteristics
Amplification power output and characteristics
Driver configuration and enclosure design
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
Components that show up alongside the PV1 in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The R400b's sensitivity is 111 dB against the PV1's 90 dB, its woofer 9" against 8", and its low-frequency extension 26 Hz against 18 Hz. Both share high-frequency extension (140 Hz).
The Kube 8 MIE's power @ 8ω is 300W against the PV1's 500W and its sensitivity 105 dB against 90 dB. Both share high-frequency extension (140 Hz) and woofer (8").
The Airmotiv XS12e's power @ 8ω is 300W against the PV1's 500W, its low-frequency extension 28 Hz against 18 Hz, its high-frequency extension 200 Hz against 140 Hz, and its woofer 12" against 8".
The Kube 10b's low-frequency extension is 24 Hz against the PV1's 18 Hz, its woofer 10" against 8", and its drivers 1 against 2. Both share high-frequency extension (140 Hz).
James Loudspeaker EMB-1200
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