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White rectangular ceiling speaker with backbox and T-bar, 1 by 2 tile replacement, rotary volume control

Valcom, Inc

Valcom, Inc S-521B Lay-in Ceiling Speaker w Backbox handheld pcs accessory

SKU CH-988E-YYHBY

Lay-in ceiling speaker with integral backbox, 25/70 volt operation and built-in amplifier

  • Lay-in design replaces half a 2' x 2' tile
  • 25/70 Volt operation suits distributed audio systems
  • Integral backbox provides three hour burn rating
  • Front rotary tap allows inconspicuous volume adjustment
  • Built-in amplifier simplifies installation with TBar included

Valcom S-521B Lay-in Ceiling Speaker

This Valcom ceiling speaker is designed for commercial audio installations that require a discreet overhead paging or background music solution. It replaces half of a standard 2' x 2' ceiling tile and includes an integral backbox for simplified mounting in suspended ceiling grids.

Verify ceiling grid and voltage before ordering

Confirm that your ceiling system uses a standard T-bar grid compatible with the included hardware and that your audio distribution line operates at either 25 or 70 volts. The speaker measures 1' x 2' and requires the amplifier output to match one of these two voltage taps for correct operation.

Upgrades basic flush-mount units without backboxes

This model replaces simple ceiling speakers that lack an integrated enclosure and fire-rated construction. The jump is worth it when building codes require a 3 hour burn rating or when a front accessible rotary tap volume control is needed for zone adjustments without removing the tile.

How it compares

Measured against everything we stock in Handheld Computer & PDA Add-Ons, at today’s prices. Recalculated every night.

Price $82.99
Pricier than about 55% of the 624 comparable items (median $56.49).

Specifications

No published specifications for this item yet.

Questions about this item

Does the S-521B include everything needed for a drop-ceiling install, or must I buy mounting hardware separately?

The speaker ships with an integral backbox and a TBar, so it fits directly into a suspended grid without extra brackets.

Should I wire the S-521B for 25 V or 70 V line operation?

Both are supported; choose 70 V for long cable runs with many speakers, or 25 V where local code or amplifier output requires the lower voltage.

What does the 3-hour burn rating on the backbox mean once the speaker is installed?

The enclosure is rated to maintain structural integrity for three hours in a standard fire test, helping meet ceiling-fire-barrier requirements.

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