Cambridge Sound Qt X 300 Control module, sound masking generator, and controller - 911.0078.900

Product Overview

The Cambridge Sound Qt X 300 (part number 911.0078.900) is a three-zone control module that functions as a sound masking generator, controller, third-octave band equalizer, and amplifier. Sound masking raises the ambient background level with engineered sound so nearby speech becomes unintelligible, improving privacy and cutting distraction. The compact, networkable module supports installations up to 36,000 square feet (3,345 m2). Two auxiliary audio inputs distribute paging and background music through the same emitter network as the masking signal.

Product Description

The Qt X 300 controls up to three zones of Qt standard or active emitters, with each zone independently adjustable for masking level, aux audio level, and spectrum. Every zone receives four non-correlated sound masking sources for uniform, comfortable coverage. Two cable runs serve each zone, supporting up to 50 Qt Active Emitters per run at 800 feet or 60 standard Qt emitters per run at 1,000 feet. The module includes an adjustable equalizer for masking and audio inputs, auto ramping, event scheduling, and a built-in clock with NTP support for time-dependent masking levels. Dual network ports separate media and control traffic, and management options include the front-panel LCD (with software lock), a web interface from any web-enabled device, and a third-party control API over Ethernet. The Qt X 300 is fully compatible with Biamp SageVue system management software, and in multi-controller systems audio inputs are shared across controllers via the AVB media network (the 300D variant adds Dante). A contact closure integrates with fire alarm systems, and a wall mount bracket is included with an optional rack mount available. Pair the module with emitters from the Cambridge Sound range.

Key Features

• Three independent zones — separate masking and aux audio levels and spectra per zone for up to 36,000 sq ft.
• All-in-one module — masking generator, controller, third-octave equalizer, and amplifier in a compact wall-mount chassis.
• Two audio inputs — distribute paging and background music through the masking emitter network.
• Four non-correlated sources per zone — uniform masking free of hot spots and phasing artifacts.
• AVB media network — share audio inputs across multiple Qt X controllers; SageVue compatible.
• Scheduling and auto ramping — event scheduling and gradual level changes with NTP-synced clock.
• Flexible control — front-panel LCD, web interface, and third-party API over Ethernet.
• Fire alarm integration — contact closure mutes masking during alarm events.
• Compliance and warranty — CE marked, ETL listed, RoHS and TAA compliant, GSA eligible, made in the U.S.A., five-year warranty.

Typical Applications

• Open-plan offices needing per-zone masking control
• Healthcare clinics and suites supporting HIPAA speech privacy
• Call centers combining masking with paging and music
• Law and financial offices protecting confidential conversations
• Government facilities requiring TAA-compliant, GSA-eligible equipment

Technical Specifications

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

Frequently Asked Questions

How large an area can one Qt X 300 cover?
Up to 36,000 square feet across three zones, with two cable runs per zone supporting up to 50 active or 60 standard emitters each.

Does it handle paging and background music?
Yes. Two auxiliary inputs distribute audio from paging controllers and music players, with independent aux level control per zone.

Can multiple controllers be networked?
Yes. Audio inputs are shared across Qt X controllers via the AVB media network (the 300D variant adds Dante), and SageVue software manages multi-controller systems.

Are emitters included?
No. This is the control module only; Qt standard or active emitters and cabling are ordered separately. Creation Networks can design a complete bill of materials for your floor plan.

What warranty applies?
The module carries the manufacturer's five-year warranty. Request a quote from Creation Networks for project pricing.