Tannoy Back Can for CMS 801 PI Series Ceiling Loudspeakers (Pre-Install) - TA-CMS801-PI-BC
Tannoy Back Can for CMS 801 PI Series Ceiling Loudspeakers (Pre-Install) - TA-CMS801-PI-BC is backordered and will ship as soon as it is back in stock.
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Product Overview
The Tannoy CMS 801 PI 8 Ohm Back Can is an acoustically enhanced pre-installation back can for CMS 801 PI ceiling loudspeakers. Designed for new-construction, non-suspended ceilings, it lets integrators rough in speaker locations and containment before the ceiling is closed. The zinc-plated steel enclosure includes an integrated 60W line transformer for 70V/100V distributed audio and installs quickly with the supplied flexible metal straps, reducing project finalisation time.
Product Description

The CMS 801 PI 8 Ohm Back Can is purpose-built for pre-installation of CMS 801 PI loudspeakers in newly constructed, non-suspended ceilings. Installing the low-profile back can early lets crews complete containment and wiring before the ceiling is finished, which significantly reduces the time required to finalise the project. The integrated low-insertion-loss 60W line transformer supports 70V and 100V distributed audio systems, so the speaker can be tapped to the design level without additional in-line components. Phoenix connectors are provided for input and link output, simplifying daisy-chained wiring across a zone. Flexible metal straps secure the can to the ceiling structure, and an optional plaster (mud) ring is available separately to identify pre-wire locations. Browse the full Tannoy collection for the matching CMS loudspeakers and accessories.
Key Features
- Pre-Installation Design — Built for rough-in of CMS 801 PI loudspeakers in newly constructed, non-suspended ceilings before final fit-out.
- Integrated 60W Transformer — A low-insertion-loss 60W line transformer is mounted in the can for 70V/100V distributed audio.
- Low-Profile Enclosure — The shallow zinc-plated steel design eases installation in tight ceiling voids.
- Fast Fixing — Included flexible metal straps secure the back can quickly to the ceiling structure.
- Phoenix Connectors — Input and link-output Phoenix connectors simplify daisy-chained zone wiring.
- Optional Plaster Ring — A plaster (mud) ring is available separately to mark pre-wire locations.
Technical Specifications
| Type | Pre-install steel back can |
| Material | Acoustically enhanced zinc-plated steel |
| Line transformer | Integrated 60 W, low insertion loss |
| Connectors | Phoenix, input and link output |
| Compatibility | CMS 801 PI series ceiling loudspeakers |
| Fixing | Included flexible metal straps |
| Ceiling type | Newly constructed, non-suspended |
| Optional accessory | Plaster (mud) ring (sold separately) |
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- 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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