Wireless Microphone & DSP Audio Systems for Installed Sound Production
Lectrosonics builds the wireless microphones and DSP audio processors used in permanently installed sound systems around the world — boardrooms, courtrooms, council chambers, houses of worship, and distance-learning rooms. The DM Series handles automatic mixing and matrix processing, while wireless products like the D Squared line of digital wireless microphone systems add cable-free microphones, so rooms run reliably and with pristine sound quality without a dedicated AV technician present.
Which Lectrosonics Systems Do AV Integrators Use for Installed Sound?
AV integrators building an installed sound system combine two product categories: DSP audio processors that handle mixing, routing, and control, and wireless microphones for rooms that need cable-free presenters or witnesses.
DSP Audio Processors
- DM1624 — a powerful digital audio processing, mixing and routing system, 16 mic/line inputs, 24 line outputs (8 outputs are mic/line switchable).
- DMTH4— telephone and teleconferencing hybrid processors with 3-in/24-out digital matrix architecture.
- DM1612 / DM812 / DM84 — additional powerful digital audio processing, mixing and routing systems.
At the core of every DM Series processor is Lectrosonics’ Proportional Gain Algorithm, an auto-mixing approach that avoids noise gates entirely — it gains up and down microphone channels proportionally as people speak, which keeps audio natural and increases gain before feedback without a technician riding the board.
Wireless Microphones for Installed Rooms
- D Squared line (DSQD) — digital wireless receiver for rooms where a wired lavalier or gooseneck isn’t practical.
- DHu – digital handheld transmitter for fully digital live sound rigs.
- DBu – digital belt-pack transmitters with 256-bit encryption – AES 256-CTR and tunes across entire UHF frequency range.
- HHa / SSM — handheld and body-worn Digital Hybrid Wireless transmitters, the same product lines used in live event and theater installs, deployed here for presenters, council members, and witnesses who need to move.
Real-world install: Jefferson Parish Courthouse Across all sixteen courtrooms in Louisiana’s Twenty-Fourth Judicial District Court, a Lectrosonics DM1624 processor takes input from every microphone in the room and routes it to four zones of ceiling speakers — a working example of the automated, multi-zone processing installed sound production depends on.
What makes Lectrosonics DSPs and Wireless Microphones right for boardrooms, courtrooms, and worship spaces?
Installed sound is a different discipline from production sound. Instead of a mixer riding faders on set, a boardroom, courtroom, or sanctuary needs a system that runs itself correctly every single day, often with no audio engineer in the room. That means automatic mixing that opens the right microphone when someone speaks and closes it when they stop, enough input/output expandability to grow with the building, network control so IT and AV staff can manage it remotely, and wireless microphone options for rooms where cabling isn’t practical or where presenters need to move freely. It also has to be dependable for years of unsupervised daily use — a courtroom can’t have an audio dropout mid-testimony.
That’s the standard Lectrosonics’ installed sound product line — DSP processors paired with wireless microphones — is built to meet.
Why Do AV Integrators Trust Lectrosonics for Installed Sound?
Lectrosonics has manufactured audio processing and wireless systems in Rio Rancho, New Mexico since 1971, and its installed sound products are built on the same engineering as its film, broadcast, and theater wireless lines. Audio professionals describe that reliability in blunt terms: one longtime installer has called Lectrosonics gear “boring — just how he likes it,” because it’s built to disappear into the background of daily operation rather than demand attention. That reliability is why Lectrosonics DSP and wireless systems run every courtroom in a Louisiana judicial district and are specified into boardrooms, council chambers, and worship spaces worldwide.
Automatic Mixing vs. Manual Mixing — Which Does an Installed Room Need?
Most installed sound rooms — boardrooms, courtrooms, council chambers, classrooms — are unsupervised most of the time, so they need DSP-driven automatic mixing rather than a live engineer. Lectrosonics ASPEN processors handle this with the Proportional Gain Algorithm, which manages gain across every open microphone without noise gates or artifacts, so a room works correctly on day one and stays that way without retuning. Larger venues that also host live events — a multipurpose hall, a house of worship with concerts alongside services — often add wireless microphones from the same Lectrosonics product families used in live music and theater production, giving the room both hands-off daily operation and the flexibility to run a fully mixed live show when needed.
Frequently Asked Questions
What is the best audio system for a boardroom, courtroom, or council chamber??
For permanently installed rooms, Lectrosonics ASPEN Series DSP processors — such as the SPN1624 matrix mixer — are built specifically for boardrooms, courtrooms, and council chambers, using automatic mixing to run reliably without a dedicated AV technician present.
How does automatic microphone mixing work in a boardroom or courtroom?
Lectrosonics ASPEN processors use a Proportional Gain Algorithm that opens and closes each microphone’s gain proportionally as people speak, rather than using hard noise gates — this keeps audio natural, increases gain before feedback, and requires no manual mixing.
Can a wireless microphone be used in a permantently installed sound system?
Yes — Lectrosonics wireless products like the D Squared line and HHa handheld transmitter are commonly integrated into installed sound systems for presenters, council members, or courtroom participants who need to move freely without a cable.
What audio system does a courthouse use for its courtrooms?
Louisiana’s Jefferson Parish Courthouse uses Lectrosonics DM1624 processors across all sixteen courtrooms of its Twenty-Fourth Judicial District Court, routing every microphone in each room to four zones of ceiling speakers.
What's the diffference between installed sound and live production sound systems?
Installed sound systems (boardrooms, courtrooms, houses of worship) are built around DSP processors that auto-mix and run unsupervised day to day, while live production sound systems (film, TV, theater, touring) are built around wireless microphones actively managed by a mixer or sound engineer during a shoot, show, or event.
