Including an 8″ Polyglass speaker driver and a front vent with a streamlined inner frame to guarantee no-noise operation, Focal 100 IWSUB8 high-power passive bass-reflex subwoofer can be installed during pre-construction of the walls using 16″ OC studs. With a shallow in-wall depth (33/8″), a bass reproduction (bass cut-off frequency: 30Hz to -6db) and covered with a low profile magnetic grille, which can be painted, it is as high-performance as Focal claims it is as discreet. Focal has also developed a dedicated amplifier specially designed for this subwoofer, that can be rack-mounted: Focal 100 IWSUB8 Amplifier. Capable of powering up to two subwoofers connected in parallel, it delivers 200watts of power over 4ohms.

100 IWSUB8 Specifications:

• Type: Passive subwoofer
• Speakers: 8″ (21cm) Polyglass Woofer
• Bandwith (+/-3dB):  34-140Hz
• Cut-off frequency (-6dB): 30Hz
• Nominal impedance: 8Ώ
• Recommended amp power: Max 200W / 4Ώ
• Dimensions (WxDxH): 137/8 x 37/8 x 513/16″ (352 x 98 x 1,300mm)
• Cut-out dimensions (WxH): 137/8 x 513/16″ (352 x 1,300mm)
• Depth from wall: 33/8″ (86mm)
• Net weight: 32.3lbs (14.6kg)

100 IWSUB AMPLIFIER Specifications:

• Type: Subwoofer amplifier
• Power (continuous): Max 200W, 150W continuous (4Ώ)
• Minimum load: 4Ώ
• Voltage range: 100-120V~60Hz / 220-230V~50Hz
• Power consumption: 150W
• Stand-by power consumption: 0.5W
• Bandwith: 20-250Hz
• Subsonic filter: 18dB/oct.
• Inputs: LFE, Line in L/R
• Outputs: Line out L/R and subwoofer power output on speaker terminal
• Cord: Detachable IEC power cord
• Protection: Dynamic power control, thermal protection, short circuit, fuse, and over-current protection
• Dimensions (HxWxD): 13/4 (21/16 with stands) x 167/8 (19 with brackets) x 101/8″ [44.5 x 429 x 257mm]
• Net weight: 6.8lbs (3.1kg)

Here are all the details and pics.