Tannoy CMS 801 SUB PI 8" Compact Ceiling Mounted Sub


  • Brand: Tannoy
  • Product Code: CMS 801 SUB PI

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  • $379.00

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8" Compact Ceiling Mounted Subwoofer for Installation Applications (Pre-Install)

  • Compact ceiling subwoofer for installation applications
  • 100 Watts continuous, 400 Watts peak power
  • 8" long excursion driver for greater low frequency response
  • Pre-install version supplied without back can (available separately)
  • Multiple transformer taps for 70 V and 100 V line systems or 6 Ohm direct input
  • UL 1480 certified for general signaling 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
  • 10-Year Warranty Program*
  • Designed and engineered in the U.K.


The CMS 801 SUB PI 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 PI delivers dynamic low frequency extension and premium grade audio for music and speech reinforcement applications.

Optimized for Installation

Specifically designed with a self-aligning 5 way clamp system for fast, simple and cost effective installation, CMS 801 SUB PI features removable locking screw terminal connector with 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 back can and plaster (mud) ring are available separately.


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


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)


100 W


200 W


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


Integral 2nd order passive, 160 Hz


Low frequency / High frequency

1x 200 mm (8.00") long throw woofer with multi fibre paper pulp cone


Back can

Zinc plated steel


Reflex loaded UL 94V-0 rated ABS


Steel, with weather resistant coating

Safety Features

Safety ring located at rear of enclosure for load bearing safety bondClamping


Security toggle clamp

Backcan Options

Pre Install (PI)

Separate back can for pre installation

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")


Removable locking connector with screw terminals with “loop through” facility

Safety agency ratings (pending)

UL-1480, UL-2043, CE

PI hole cutout diameter

295 mm (11.61")


Bezel diameter

325 mm (12.80")

Back of ceiling surface to rear of back can (PI)

151.2 mm (5.95")

Back of ceiling surface to top of safety loop (PI)

168.5 mm (6.63")

Front of ceiling to rear of bass ports (no back can) PI

123.7 mm (4.87")

Net Weight (ea)

CMS 801 PI

4.7 kg (10.34 lbs)

PI back can

4.2 kg (9.25 lbs)

Included Accessories

C Ring, tile bridge, paint mask, cutout template, grille

Optional Accessories

Plaster (Mud) Ring