Dynacord U240:1-US – 240W Single-Channel Power Amplifier

Product Overview

The Dynacord U240:1 is a 240 W single-channel power amplifier for fixed commercial audio systems driven by an external mixer or DSP front end. As a 70V power amplifier supporting 70 V, 100 V, 4 ohm, and 8 ohm loads, it is the highest-output power amplifier in the U Series, suited to larger distributed audio zones for background music and paging in retail, hospitality, and worship spaces. With rear-panel controls and a half-rack chassis, it is a set-and-forget install amplifier for spaces where front-panel access should be restricted.

Product Description

The U240:1 is a power-amplifier-only member of the Dynacord U Series, delivering 240 W of Class-D output without an onboard mixer, making it ideal where a separate mixer, DSP, or matrix supplies the program signal. It accepts one balanced line input on a 3-pin Eurostyle connector and one unbalanced line input on RCA (summed to mono), plus a dedicated EMG priority input that takes line-level or 100 V signals so emergency and all-call messages override program audio. The output stage is DIP-selectable for 4 ohm, 8 ohm, 70 V, and 100 V, letting the same unit drive longer high-Z distributed speaker runs or low-Z surface speakers. Gain, bass, and treble controls are located on the rear panel for a secure set-and-forget configuration, with a clean front panel that prevents tampering in public-facing installations. A four-stage temperature-controlled fan keeps the unit quiet at low output and cool under sustained load, and remote power standby reduces idle consumption for energy-conscious deployments. Built for continuous fixed-install use, this Dynacord U Series amplifier integrates cleanly downstream of paging controllers and audio DSP. Browse the full Dynacord collection at Creation Networks, or for an install amplifier with onboard DSP see the Dynacord C1300FDi DSP power amplifier.

Key Features

• 240 W Class-D Power Amplifier — The highest-output U Series power amplifier delivers 240 W with high efficiency for larger zones and longer 70 V/100 V runs.
• 70 V / 100 V and Low-Z Output — Selectable 4 ohm, 8 ohm, 70 V, and 100 V operation supports both distributed high-Z and direct low-Z loudspeaker systems.
• Balanced and Unbalanced Line Inputs — A balanced 3-pin Eurostyle input and an unbalanced RCA input accept signal from mixers, DSP, and matrix systems.
• EMG Priority Override — A dedicated emergency input accepts line-level or 100 V signals with level selection so critical messages take precedence over program audio.
• Rear-Panel Set-and-Forget Controls — Gain, bass, and treble adjustments sit on the rear panel, leaving a clean front face that prevents tampering in public spaces.
• Four-Stage Cooling — A temperature-controlled four-stage fan keeps the amplifier quiet at low levels and stable under sustained load.
• Switchable 120 Hz High-Pass Filter — A selectable HPF removes unwanted low-frequency content to protect speakers and improve speech clarity.
• Half-Rack 1U Chassis — Included brackets allow single, side-by-side rack, table-top, or under-counter mounting, with two units fitting one rack space.
• Remote Power Standby — Contact-closure remote power off reduces standby consumption to 1.25 W for energy-conscious installations.

Typical Applications

• Auditorium
• House of worship
• Multi-purpose rooms
• Commercial meeting spaces
• Government spaces
• All-hands rooms

Technical Specifications

Specifications sourced from the Dynacord U240:1 datasheet. Data subject to change without notice.

Frequently Asked Questions

Does the U240:1 support both 70 V and 100 V distributed speaker systems?
Yes. The output is DIP-switch selectable for 4 ohm, 8 ohm, 70 V, and 100 V, so it works with high-Z distributed ceiling and pendant systems as well as low-Z surface speakers.

How many speakers can 240 W drive on a 70 V/100 V line?
Total connected speaker tap wattage should stay within the 240 W rating with headroom for line losses. Sum the tap settings of all speakers in the zone and confirm the total fits within the amplifier rating during system design.

Does this model include a mixer?
No. The U240:1 is a power amplifier with one balanced and one unbalanced line input plus an EMG priority input. It is intended to sit downstream of a mixer, DSP, or paging controller. For an integrated mixer, see the U240:1M model.

Why are the controls on the rear panel?
Gain, bass, and treble are placed on the rear panel as a set-and-forget design, leaving a clean front face that prevents accidental or unauthorized adjustment in public-facing installations.

How is the amplifier mounted in an equipment rack?
The half-rack 1U chassis ships with brackets for single rack-mount, side-by-side mounting (two units per rack space), table-top, or under-counter installation.

What warranty and support are available?
Dynacord products carry the manufacturer's standard warranty. Creation Networks provides pre-sale system design guidance and post-sale support for commercial AV deployments. Contact our team through the Creation Networks site for documentation and assistance.

Is this model suitable for 24/7 operation?
Yes. The Class-D design, four-stage cooling, protection circuitry, and remote standby make it appropriate for continuous fixed-install commercial use.