Dynacord U240:1M: Compact Single-Channel 240W Mixer Amplifier

Dynacord U240:1M: Compact Single-Channel 240W Mixer Amplifier The Dynacord U240:1M is a commercial-grade single-channel mixer amplifier engineered for small-to-medium installations where speech intelligibility and clear background music are paramount. Part of Dynacord's compact U Series, it packs a robust 240-watt Class D amplifier into a space-saving half-rack, 1 RU chassis. This small footprint makes it an exceptional utility choice for bars, restaurants, retail outlets, houses of worship, and corporate training rooms where equipment space is restricted. Flexible Audio I/O and Advanced Voice Prioritisation The U240:1M features a flexible four-input mixing matrix tailored for paging and media playback. Inputs 1 and 2 are balanced mic/line channels selectable via rear-panel DIP switches, complete with switchable plus 48V phantom power to accommodate high-quality condenser boundary or paging mics. Channel 1 features a contact-override trigger that initiates a built-in two-tone chime, serving as an attention-grabbing alert before announcements. Channel 2 incorporates an adjustable VOX Ducking circuit. When an announcer speaks into the priority microphone, the mixer automatically attenuates the background music (routed through the line-level RCA Input 3 or Input 4) by a user-defined level between 0 dB and minus 45 dB. Once the speech finishes, the background audio smoothly ramps back up to its original level, providing a hands-free solution for venue staff. Output Options and Dedicated Emergency Handling The energy-efficient Class D topology delivers its full 240-watt capacity across multiple operational profiles. Installers can easily configure the output stage via DIP switches to match low-impedance configurations (4 Ohms or 8 Ohms) or constant-voltage distributed speaker systems (70V or 100V lines). For system safety and audio clarity, the amplifier includes a switchable 120 Hz high-pass filter to prevent transformer saturation in budget ceiling speakers, alongside a permanent 20 Hz low-cut filter to protect drivers from low-end rumble. For public safety compliance, the unit includes a high-priority EMG emergency override input that accepts line-level or high-impedance 100V signals. When triggered by a fire alarm or central voice-evacuation system, all local media inputs are overridden to ensure critical instructions are delivered clearly across the zone. A Remote Power Off contact port is also provided, allowing the unit to be placed into a low-power standby mode (consuming just 1.25 watts) when the facility is locked up. Installation and Rack Configuration Options The physical format of the U Series is built around system modularity. The mixer amplifier is supplied with a comprehensive hardware accessory pack containing single rack-mounting ears, dual rack-mounting joiners, and under-counter brackets. Because it sits at exactly half a rack width, two units can be bolted side-by-side inside a standard 19-inch equipment rack, allowing contractors to effectively deliver a 480-watt or dual-zone footprint within a single rack unit slot. Technical Specification Data Feature Detail Product Category Commercial Single-Zone Mixer Amplifier Amplifier Topology Class D Rated Output Power 240 Watts RMS Output Load Supported 4 Ohms, 8 Ohms, 70V Line, 100V Line Total Input Channels 4 Input Channels + 1 EMG Emergency Override Inputs 1 and 2 Balanced Mic/Line (3-pin XLR / 5-pin Eurostyle) with plus 48V Phantom Inputs 3 and 4 Unbalanced Line Level (Stereo RCA summed to Mono) Emergency Input (EMG) Balanced Line Level / 100V Page Input (2-pin Eurostyle) Audio Processing VOX Ducking, Two-Tone Paging Chime, 120 Hz High-Pass Filter Tone Adjustment Bass shelving (plus or minus 12 dB at 100 Hz), Treble shelving (plus or minus 12 dB at 10 kHz) Protection Systems Audio limiter, high temperature, DC detection, short circuit, over current Dimensions (W x H x D) 218 mm x 44.2 mm x 217.7 mm (1 RU, half-rack width) Net Weight 1.85 kg See manufacturer website for specific product warranty information.