Theory Introduces Next Generation of DLC Loudspeaker Controllers

by | Audio, Audio Connections, Gear, Production

Premium commercial audio brand, Theory Professional, announces an all new DLC distributed loudspeaker controller platform including three models: DLC-250.4d, DLC-1500.4d, and DLC-250.8. Ideal for residential or commercial installations, the new models offer between 4 and 8 channels of intelligent power, full DSP matrix, TCP/IP control through a wired connection, or directly via its on-board Wi-Fi access point. Two of the three models, the DLC-250.4d and DLC-1500.4d, also add Dante and AES67 audio-over-IP digital I/O compatibility. 

The small but mighty DLC-250.4d 4-channel Loudspeaker Controller is designed to be at the core of every Theory distributed audio system. With channel-pair power sharing of up to 250W, each DLC-250.4d offers the flexibility to power any system size. The ½ RU DLC-250.4d ships with a rack kit to allow mounting of one or two units in a single rack space. An optional surface mount kit is also available if hiding the DLC-250.4d under a table or behind a TV is desired.

The DLC-250.8 is ideal for surround and distributed audio systems where Dante and AES67 are not required but when more channels per chassis is desired. DLC-250.8 offers the same power per channel and power sharing capabilities as the DLC-250.4d with four additional channels (for a total of eight channels) in a 1U chassis.

The DLC-1500.4d 4-channel Distributed Loudspeaker Controller packs massive power into minimal rack space, offering a massive 3,000W from a 16-pound, 2U chassis. Designed for high-output Theory distributed or surround audio systems, the DLC-1500.4d can deliver 1,500W into 4 or 8-ohms from any channel pair, or 800W into 2 or 4-ohms all channels driven.

“The new generation of Theory DLC loudspeaker controllers offer all the advantages of their predecessors with the addition of audio over IP, an entirely new 8-channel model, and a cohesive new industrial design across the line,” said Paul Hales, CEO and product designer for Theory Audio Design. “Now with Dante and AES67 compatibility, even the most complex Theory distributed audio systems can be setup and deployed quickly and painlessly with no bulky analog audio cables required. And the system is bulletproof so when the job is complete the installer can move on without concerns about support calls or truck rolls.” 

In hotels, education facilities, and corporate environments where there are multiple rooms of varying sizes, the DLC models offer complete flexibility in terms of available power. The S/PDIF master/slave functionality allows multiple DLCs to be used to cover all these needs and each loudspeaker controller only takes up two rack spaces maximum. House of Worship requires reliable, high-quality amplification of voice, while also covering a large distribution area with many specialized speakers. The DLC loudspeaker controllers are up for the challenge, providing high-quality amplification and superior speech intelligibility throughout large spaces. 

For home cinema and surround sound systems, a single DLC-250.4d is perfect for 3.1 systems (or more when multiple amplifiers are used), a single DLC-250.8 can handle 7.1 systems, and the larger more powerful DLC-1500.4d can handle large screen and professional loudspeakers and subwoofers without hesitation. The DLC platform is safety and EMC certified and compliant to ErP and EnergySTAR*. 

Theory’s product ecosystem is unique in that offers many of the performance qualities of professional audio products – effortless dynamics, high efficiency, and rugged durability – but with the sonic delicacy, detail, and resolution of the best high-end high-fidelity products. Add Theory’s intelligent full-system design approach, with automatically tailored loudspeaker DSP, and you get startling performance at tremendous value.

The new generation of DLC loudspeaker controllers is available now. For full specifications by model, click here.

To connect with a Theory representative and for more information about Theory Professional, please visit,

About Theory Professional

Commercial spaces are becoming increasingly more refined and sophisticated, but the audio products to address them have not kept up. Theory Professional is genuinely different. We address the premium audio niche head-on with a small stable of highly-refined, yet very high-utility loudspeakers, subwoofers, and amplified loudspeaker controllers that offer class-leading performance in every application – indoors and out.

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