Cambridge Sound Qt® E-A-W-25-4 Standard Emitters, White, 4 pack, with 4 x 25 ft white plenum rated cables - 911.0894.900

Product Overview

The Cambridge Sound E-A-W-25-4 is a four-pack of white Qt Standard Emitters with four 25-foot white plenum-rated cables, part number 911.0894.900. Qt emitters are the foundation of the Qt Quiet Technology Sound Masking System, projecting uniform direct-field masking into the workspace from compact ceiling-mounted speakers. Each emitter measures just 2.5 inches tall by 3.25 inches in diameter and ships with a slip ring for acoustical tile mounting.

Product Description

Qt emitters reduce noise distractions and safeguard speech privacy by distributing four separate uncorrelated audio channels across the ceiling plane, which keeps the masking field even and free of hot spots. The control module equalizes output to within +/- 1 dB in 1/3-octave bands across the entire speech range, so masking sounds consistent as occupants move through the space. Maximum output spans 36 to 57 dB, appropriate for direct-field masking levels in occupied offices. Each emitter presents a 4,000-ohm nominal impedance and connects over plenum-rated CAT3 wiring with RJ-45 connectors, making long daisy-chained runs practical with low-voltage cabling. The included 25-foot white cables suit larger ceiling grids and longer hops between emitters. The units are UL Listed and install into standard acoustical tile with the included slip rings. Find Qt control modules and additional cabling in the Cambridge Sound collection at Creation Networks.

Key Features

• 25 ft Plenum Cables Included — four white plenum-rated cables support longer runs between emitters.
• Uniform Direct-Field Masking — projects masking straight into the workspace for consistent coverage.
• Four Audio Channels — separate channels reduce phasing for smoother, more natural masking.
• Tight Equalization — +/- 1 dB in 1/3-octave bands across the speech range as equalized by the control module.
• Compact Housing — 2.5" tall by 3.25" diameter, visually discreet in finished ceilings.
• Low-Voltage CAT3 Wiring — plenum-rated cabling with RJ-45 connections simplifies installation.
• UL Listed — safety-certified for commercial ceiling installation.
• Slip-Ring Mount Included — standard mount for fast acoustical tile installation.

Typical Applications

The E-A-W-25-4 serves open-plan offices, private office clusters, conference room perimeters, healthcare exam and waiting areas requiring speech privacy, and legal or HR suites. The white finish matches standard acoustical ceiling tile, and the 25-foot cables accommodate wider emitter spacing in large floor plates.

Technical Specifications

Specifications sourced from Cambridge Sound vendor data. Unlisted values are omitted rather than estimated.

Frequently Asked Questions

What is included in the E-A-W-25-4 pack?

Four white Qt Standard Emitters, four 25 ft white plenum-rated cables, and slip rings for acoustical tile mounting.

How do Qt emitters keep masking uniform?

Each emitter distributes four separate audio channels and is equalized by the control module to +/- 1 dB in 1/3-octave bands across the speech range, eliminating hot spots.

What wiring do these emitters use?

Plenum-rated CAT3 cabling with RJ-45 connections; the included 25 ft cables are plenum-rated for ceiling runs.

When should I choose 25 ft cables over 16 ft?

Choose 25 ft cables for larger ceiling grids or wider emitter spacing where 16 ft hops would fall short.