Description
Install a full-featured paging and background audio speaker in half a ceiling tile with the Valcom S-521, a 1x2 lay-in ceiling speaker with integrated backbox, 25/70-volt transformer, rotary volume control, and T-bar included for suspended ceiling grid installation.
The Telecom Spot Expert Review
The S-521 occupies exactly half of a standard 2x2 ceiling tile opening — replacing one half-tile with the speaker assembly while the other half remains a standard tile. This format is the right choice for spaces where a full 2x2 speaker would be too dominant visually or acoustically for the room size, but a small round ceiling cut-out speaker lacks the output needed. The 1x2 format fits naturally in office corridors, server rooms, small conference rooms, and break rooms where two speakers per 2x2 bay is unnecessary. The integral backbox with a 3-hour burn rating meets plenum-space requirements that apply in most commercial suspended ceiling installations. Front-accessible rotary tap volume control lets the installer or occupant adjust the speaker level without going above the ceiling. The included T-bar simplifies ordering by eliminating a separate support bridge purchase. Built-in amplifier operates directly on 25/70V speaker lines.
Key Features
- 1x2 lay-in ceiling speaker replacing half of a 2x2 tile — no cutting required
- Integral backbox with 3-hour burn rating for plenum ceiling compliance
- 25/70V operation with front-accessible rotary tap volume control
- Built-in amplifier; T-bar included
- White acrylic baked enamel finish matches standard ceiling tile
Technical Specifications
| Model | S-521 |
|---|---|
| Type | 1x2 Lay-In Ceiling Speaker with Backbox |
| Speaker Line Voltage | 25V / 70V |
| Ceiling Format | 1 ft. × 2 ft. (half of 2x2 tile) |
| Backbox | Integral, 3-hour burn rating |
| Volume Control | Front-accessible rotary tap |
| Finish | White acrylic baked enamel |
| Included Hardware | T-bar |
| Operating Environment | Indoor suspended ceiling |