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8″ Compact Ceiling Mounted Subwoofer for Installation Applications (Blind Mount)

  • Compact ceiling subwoofer for installation applications
  • 100 Watts continuous, 400 Watts peak power
  • 8″ long excursion driver for greater low frequency response
  • Blind mount version supplied with acoustically enhanced zinc plated steel back can
  • Integrated single unit construction for ease of installation
  • Multiple transformer taps for 70 V and 100 V line systems or 6 Ohm direct input
  • UL 1480 certified for general signalling systems
  • UL 2043 certified for air-handling spaces
  • Low insertion loss 60 W line transformer with easily accessible tapping switch
  • Semi matt white finish fits unobtrusively in any environment
  • Powder coated UV resistant perforated steel mesh grille with dust protection
  • Removable grille for custom painting
  • Self-aligning 5 way clamp mounting system
  • Mounting C-ring and ceiling tile rails included
  • Designed and engineered in the U.K.



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The CMS 801 SUB BM is a compact 400- Watt subwoofer that complements the entire range of CMS ceiling monitor systems.
Thanks to a powerful 8″ long excursion LF driver, the UL certified CMS 801 SUB BM delivers dynamic low frequency extension and premium grade audio for music and speech reinforcement applications.


Frequency response (-3 dB) (1) 58 Hz – 160 Hz
Frequency range (-10 dB) (1) 42 Hz – 300 Hz
System sensitivity (1 W @ 1 m) (2) 92 dB (1 W = 2.45 V for 8 Ohms)
Rated maximum SPL (2) 112 dB (average) 118 dB (peak)
With THP60 110 dB (average)
Power handling (3)
Average 100 W
Programme 200 W
Peak 400 W
Recommended amplifier power 200 W @ 8 Ohms
Nominal impedance 8 Ohms
Transformer taps (via front rotary switch)
70 V 60 W/30 W/15 W/7.5 W/OFF & Low impedance operation
100 V 80 W/30 W/15 W/OFF & Low impedance operation
Crossover Integral 2nd order passive, 160 Hz


ncy 1x 200 mm (8.00″) long throw woofer with multi fibre paper pulp cone
Back can Zinc plated steel
Baffle Reflex loaded UL 94V-0 rated ABS
Grille Steel, with weather resistant coating
Safety Features Safety ring located at rear of enclosure for load bearing safety bondClamping
Design Security toggle clamp
Backcan Options
Blind Mount (BM) Complete with fixed back can
Cable Entry Options Cable clamp & squeeze connector for conduit up to 22mm
Conduit Knockouts 3 Sets of horizontal positions 19 / 22 / 28 mm (0.75 / 0.87 / 1.1″)
Connectors Removable locking connector with screw terminals with “loop through” facility
Safety agency ratings (pending) UL-1480, UL-2043, CE
BM hole cutout diameter 295 mm (11.61″)


Bezel diameter 325 mm (12.80″)
Front of ceiling to rear of back can (BM) 310.5 mm (12.22″)
Front of ceiling to top of safety loop (BM) 327.8 mm (12.90″)
Net Weight (ea)
CMS 801 BM 8.4 kg (18.48 lbs)
Included Accessories C Ring, tile bridge, paint mask, cutout template, grille
Optional Accessories Plaster (Mud) Ring

Ordering Information

Model name CMS 801 SUB BM
Baffle / Grille Colour WHITE
Packed Quantity 2
Packed weight kg (lbs) 20.2 (44.44)

More Info

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Optimised for Installation

Specifically designed with a self-aligning 5 way clamp system for fast, simple and cost effective installation, CMS 801 SUB BM features an acoustically enhanced zinc plated steel back can with removable locking screw terminal connector and loop-thru functionality.
A low-insertion loss 60 W transformer with convenient front panel tap switching, paintable powder coated steel mesh grille with dust protection, two tile support rails and one C-ring are all included. A plaster (mud) ring is available separately.

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The CMS 801 SUB BM is finished in semi matt white and optimised for use with LAB GRUPPEN amplifiers.