Tannoy CMS 801 SUB BM 8" Compact Ceiling-Mounted Subwoofer (Blind-Mount,Pair) - TA-CMS801SUB-BM
Tannoy CMS 801 SUB BM 8" Compact Ceiling-Mounted Subwoofer (Blind-Mount,Pair) - TA-CMS801SUB-BM is backordered and will ship as soon as it is back in stock.
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Product Overview
The Tannoy CMS 801 SUB BM is a compact 8-inch ceiling-mounted subwoofer, sold as a pair, designed to extend the low-frequency response of CMS ceiling loudspeaker systems in commercial installations. With 70V/100V line operation and a UL-certified blind-mount back can, it delivers dynamic bass for music and speech reinforcement in distributed ceiling audio systems. The integrated single-unit construction and self-aligning clamp system speed installation in suspended ceilings.
Product Description

Supplied as a pair, the CMS 801 SUB BM is a 400-watt ceiling subwoofer that complements the full range of Tannoy CMS ceiling monitor systems, giving AV integrators a discreet way to add low-frequency extension to distributed ceiling audio. A powerful 8-inch long-excursion driver with a multi-fibre paper pulp cone reproduces bass from 58 Hz, reinforcing both background music and full-bandwidth program material. Multiple transformer taps support 70V and 100V distributed line systems or 6-ohm low-impedance direct drive, letting integrators match the subwoofer to existing constant-voltage infrastructure. The blind-mount version ships with an acoustically enhanced zinc-plated steel back can, and UL 1480 certification for general signalling systems plus UL 2043 certification for air-handling plenum spaces qualify it for use above suspended ceilings in commercial buildings. A self-aligning five-way clamp mounting system with an included C-ring and ceiling tile rails simplifies installation, while the removable grille can be custom painted to match interior finishes. The semi-matt white finish and UV-resistant perforated steel grille keep the unit unobtrusive in conference rooms, lobbies, and retail spaces. Browse the full Tannoy loudspeaker collection at Creation Networks to pair the subwoofer with matching CMS ceiling loudspeakers and amplifiers.
Key Features
- Sold as a Pair — This listing supplies two CMS 801 SUB BM subwoofers for distributed ceiling installations.
- 8-inch Long-Excursion Driver — A 200 mm long-throw woofer with multi-fibre paper pulp cone delivers extended low-frequency response from 58 Hz.
- 70V/100V and Low-Impedance Operation — Multiple transformer taps support 70V and 100V distributed lines or 6-ohm direct drive for flexible system design.
- UL Air-Handling Certified — UL 2043 certification for air-handling spaces allows installation in plenum ceilings, with UL 1480 certification for general signalling systems.
- Blind-Mount Back Can — The supplied acoustically enhanced zinc-plated steel back can provides a contained enclosure for blind-mount ceiling installs.
- Self-Aligning Clamp Mounting — A five-way clamp system with included C-ring and ceiling tile rails speeds accurate installation in suspended ceilings.
- Paintable Removable Grille — The UV-resistant perforated steel grille is removable for custom painting to match interior decor.
- Integrated Single-Unit Construction — The one-piece design eases handling and installation compared with multi-part assemblies.
- 10-Year Warranty Program — Backed by Tannoy's 10-year warranty program for long-term commercial reliability.
Typical Applications
- Conference room
- Boardroom
- Commercial meeting space
- Multi-purpose room
- Training room
Technical Specifications
| Frequency response (-3 dB) | 58 Hz - 160 Hz |
| Frequency range (-10 dB) | 42 Hz - 300 Hz |
| System sensitivity (1 W @ 1 m) | 92 dB (1 W = 2.45 V for 8 Ohms) |
| Rated maximum SPL | 112 dB (average) 118 dB (peak) |
| With THP60 | 110 dB (average) |
| Power handling | 100 W continuous, 400 W peak |
| Transducer | 1 x 200 mm (8") long throw woofer with multi fibre paper pulp cone |
| Transformer | 60 W line transformer with front rotary tap switch (70 V / 100 V); 6 Ohm direct input |
| 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") |
| Included accessories | C-ring, tile bridge, paint mask, cutout template, grille |
| Optional accessories | Plaster (Mud) Ring |
| Baffle / grille colour | White |
| Packed quantity | 2 |
| Packed weight | 20.2 kg (44.44 lbs) |
| Certifications | UL 1480 (general signalling), UL 2043 (air-handling spaces) |
Frequently Asked Questions
Is the CMS 801 SUB BM sold individually or as a pair?
This listing is sold as a pair, supplying two subwoofers.
Can it be installed in a plenum (air-handling) ceiling?
Yes. The subwoofer carries UL 2043 certification for air-handling spaces and UL 1480 certification for general signalling systems, qualifying it for plenum installation.
Does it work on 70V/100V distributed systems?
Yes. A 60 W line transformer with a front rotary tap switch supports 70V and 100V lines, and the unit can also be driven directly at 6 ohms.
What does the blind-mount version include?
It ships with an acoustically enhanced zinc-plated steel back can, plus a C-ring, tile bridge, paint mask, cutout template, and grille for installation.
Can the grille be painted to match the ceiling?
Yes. The UV-resistant perforated steel grille is removable and can be custom painted using the included paint mask.
What warranty and support are available?
The CMS 801 SUB BM is covered by Tannoy's 10-year warranty program. Contact Creation Networks for project pricing, CMS system matching, and AV design support.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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