Theory Audio Design is now shipping five new amplified loudspeaker controllers. Adding to its DLC Series loudspeaker controller lineup, the 8-channel DLC-1500.8d delivers a massive 6000W in a 2U chassis. The brand-new PLC series, comprised of two 8-channel and two 4-channel models, leverages Powersoft’s patented Class-D amplification topologies, SmartRail energy-management power supplies, Power Factor Correction, and advanced DSP architecture to bring Theory’s premium sound into complex residential, professional, large venue, and live sound applications.
Capable of delivering 1500W into 4 or 8 ohms from any channel pair, or 800W into 2 or 4 ohms all channels driven, DLC-1500.8d packs new levels of power into minimal rack space. Equipped with upgraded high-current output Euroblock connectors that accept up to 10-gauge wire and 4 channels of Dante/AES67 audio-over-IP digital I/O, DLC-1500.8d makes setting up and deploying even complex distributed audio systems painless and bulletproof. DLC-1500.8d can drive up to 32 Theory 16-ohm loudspeakers in Lo-Z mode, or over 300 (!) direct in Hi-Z mode – with no internal transformer required.
DLC-1500.8d can be configured with the DLC on-board web interface accessible via wired Ethernet, or via its on-board Wi-Fi access point, and includes matrix mixing, priority audio routing and ducking, parametric EQ, delay, gain, and limiter DSP objects to make system optimization easy. Full API and modules for AMX, Control4, Crestron, Crestron Home, ELAN, Josh.ai, Q-SYS, RTI, and Symetrix are available.
Powersoft’s technology is recognized for its reliability, energy efficiency, and sonic transparency achieved through ultra-low noise converters, linear phase FIR filters, and Active Damping Control. Combining high-quality amplification with advanced DSP capabilities plus PoE gives PLC users exceptional sound reproduction and precise control. PLC 4 and 8 channel loudspeaker controllers are compact (only 1RU) but power dense. Add in Theory’s proprietary loudspeaker presets and you get big, clean, high-fidelity sound for large-formant and even portable applications.
New Theory PLC loudspeaker controller models:
PLC-4K8: 8 channels x 500W per channel
PLC-8K8: 8 channels x 1000W per channel
PLC-9K4: 4 channels x 2250W per channel
PLC-16K4: 4 channels x 4000W per channel
Key features of Theory’s PLC Loudspeaker Controller platform include:
Proprietary Theory Loudspeaker presets
Native Dante and AES67 Audio over IP networking
All-channel power sharing
Three configurable 1 Gb network ports with 1x PoE
Easy swap USB key amplifier restore
Maritime compliance
All five models are available now.
At CEDIA Expo 2026, Theory will display the DLC-1500.8d and PLC Series in booth #1300.