For producers and sound engineers with higher demands in the sub-bass,
Focal offers Sub One, a subwoofer that delivers power of 200W RMS. Thanks to its precision and very low distortion, this long-excursion, high-efficiency subwoofer ensures ideal coupling with the Alpha Evo line but also the Shape line of monitors.
 
The speaker drivers boast an exclusive double-skinned Slatefiber cone: 
The two cones affixed against each other offer even greater rigidity, ideal for a subwoofer. Finally, with its large vents located on the front panel, Sub One is very easily and discreetly positioned along a wall or under a desktop as it takes up less depth.
 
Overview
Dual-Woofer Design
Long-excursion, high-efficiency subwoofer with two 8" Slatefiber cones made in France
Large front vents ensure stable tonal balance and optimum integration
Two 100W RMS Class-D amplifiers
Reproduces sonic microdetails with great dynamics and low distortion
Integrates easily into a room, along a wall, or under a desk
Adjustable Settings
Subwoofer level control
Continuously variable phase from 0 to 180°
Switchable polarity
Defeatable high-pass crossover at 60 or 90 Hz
24 dB/octave low-pass crossover tunable between 45 and 120 Hz
Selectable auto-standby mode
Versatile I/O
Electronically balanced left, right, and LFE inputs on XLR 3-pin jacks
Left, right, and LFE XLR outputs
1/4" input and outputs for pedal-controlled mute (footswitch available separately) with linking between several subwoofers
 
Features
Dual 8" Slatefiber Cone Woofers
Large Front Vents for Stable Tone
200W RMS Class-D Amplification
32 to 120 Hz Frequency Response
Variable Phase and Switchable Polarity
Adjustable Low- and High-Pass Crossover
Subwoofer Level Control
Footswitchable Mute
Left, Right, and LFE I/O on XLR Jacks