Reinventing the Horn:

A Novel Approach to Directivity Control in a Horn Loaded Loudspeaker

the Biamp LVH 900

Presented by

John Loufik

Senior Applications Engineer Loudspeaker Solutions Group (Biamp) &

Charlie Hughes

Principal Engineer for Electroacoustics (Biamp) &

Todd Stevens

Director, Loudspeaker Solutions Group, The Americas (Biamp) &

Denny McLane

Consultant Liaison, Western North America (Biamp) &

Deward Timothy

Sound System Designer, Owner Emeritus of Poll Sound &

The Pacific Northwest Section of the Audio Engineering Society

Produced By

Luke Goodloomis

AES PNW Committee and TEECOM Principal Consultant

February 25 2026

The PNW Section February meeting was a visit to Biamp in Beaverton, Oregon USA, for a tour of their tech facilities and presentation on the design of their interesting LVH900 horn speaker system. This hybrid meeting meant people could attend in-person at Biamp headquarters or participate via Zoom. About 53 people were on Zoom (29 AES members) and 14 in-person (5 AES members).

 

The meeting began with a tour of the Biamp Audio Testing facility, which they call the BAT Cave. Nick Brisbois (spelling?) led us through their anechoic chamber, and another room designed to have “typical office meeting room acoustics” used for testing their varied products.

 

Just outside the BAT Cave, several Biamp engineers showed a gallery of product demonstrations. Afterwards, an intermission was held, and in-person attendees were treated to a buffet meal.

Biamp is a diverse company with employees around the country, like their Community division (nee Community Light & Sound) in Pennsylvania USA, so some presenters were in-person and some on Zoom. PNW Section committeeperson Luke Goodloomis organized the meeting.

 

Todd Stevens, Director of the  Loudspeaker Solutions Group sales, gave an overview of the LSG corporate team.

 

Denny McLane continued with a detailed description of the LVH 900 with a disassembled unit on stage as well as charts. The system has a new horn manifold design, plus DSP (digital signal processing) and power amps outboard, as the system is designed for permanent, poor access installations. Todd continued with comparison details to traditional line arrays. At this point, the house video screen quit, so a brief pause was done to sort this out.

 

Next, a prepared video was shown with Biamp principal electroacoustic engineer Charlie Hughes describing the installation of a LVH 900 system in the stadium at Georgia Southern University.

 

Chris Barrow, senior product manager for the LSG, spoke via Zoom about the genesis of the LVH project – why they felt there was a need for a unique product to challenge traditional line arrays, which they also sell. He gave a more detailed explanation of the design criteria, patented horn manifold and construction details.

 

Next, John Loufik went into more detail about the steering and beam forming capabilities.

 

Deward Timothy, a veteran consultant in Salt Lake City, described a case study of using the LVH in an auditorium in Utah, along with measurements.

 

John Loufik returned, with details about designing and deploying an LVH system. He described the acoustic modeling techniques and subsequent DSP design, along with several case studies and measurement results.

 

Charlie Hughes, principal electroacoustic engineer, continued with another case study of a church in southern Oregon using LVH, comparing software simulations with measured results.

 

Todd Stevens then opened up the meeting to Q&A.

 

Many thanks to Biamp, who pulled out all the stops to provide so many of their staff, their facility and tech support to host the meeting.

Presenters:

 

Charlie Hughes

Charlie Hughes is currently the principal engineer for electroacoustics at Biamp Systems.  Previously, he was the principal consultant at Excelsior Audio, during which time he also worked for Ahnert Feistel Media Group (AFMG).  Charlie has been involved in the design, measurement, and optimization of loudspeaker systems for over 35 years and a member of the AES since 1994.  He is a graduate of the Georgia Institute of Technology with a BS Physics degree.  Prior to starting Excelsior Audio in 2005, he was employed by Peavey Electronics and Altec Lansing.

 

One of Charlie’s primary areas of interest within the field of electroacoustics is the directivity control of radiation from loudspeakers and loudspeaker arrays.  He has designed many commercially successful loudspeaker systems and horns in conjunction with this endeavor, as well as becoming very involved with loudspeaker modeling and simulation.  Six US patents have been issued to him as a result of his work and designs in this area.  He holds two other US patents related to noise cancellation.

 

Charlie is active in the AES with a keen interest in standards development.  He is a member of the AES Standards and Steering Committees, as well as five working groups: currently serving as the chair of SC‑04‑03, Loudspeaker Modeling and Measurement.  He has authored or co-authored multiple AES papers, has been an invited panelist at several Live Sound Seminars and Workshops at numerous AES conventions, including chairing one on subwoofer array directivity, and been invited to lecture at local AES section events.  Additionally, his technical articles have appeared in many industry publications.  Charlie was formerly a member of the IEC, served as moderator for the AVIXA Spectral Balance standard committee, and chaired the Consumer Technology Association standards group CTA R3 WG1.  During his 15 year tenure there ANSI/CTA‑2010, ANSI/CTA‑2034, and ANSI/CTA‑2099 standards were published.  As a result of his work, he received the 2013 CTA Technology Achievement Award.

 

 

John Loufik

John specializes in loudspeaker and acoustic system design and has been with Biamp’s Loudspeaker Solutions Group (LSG) since 2019. He previously spent over a decade with Community Light & Sound after joining its Technical Applications Group in 2006. Based at the Chester, PA manufacturing facility, John has held roles in applications engineering and project management, providing system design and technical support, contributing to product development, and leading loudspeaker-focused education initiatives.

Earlier in his career, John owned and operated an AV design and installation company and worked in professional audio retail, transitioning into audio in 2001 after a career in pastoral ministry. He has designed sound systems for venues ranging from education, houses of worship, and corporate spaces to sports arenas, transit facilities, military installations, and aerospace launch sites.

John holds a BA from Asbury University and an AA from Rowan University South. He has contributed to industry publications, presented at InfoComm, and recently contributed to the Handbook of Sound Engineers (6th Edition).

 

 

Denny McLane

Denny McLane is a senior audio professional with more than four decades of experience spanning two tenures as a design consultant, along with product development, consultant relations, system design, sales leadership, and live production. He currently serves as Consultant Liaison for Western North America at Biamp. 

 

Known for his deep technical fluency and long-standing relationships within the AEC and professional audio communities, Denny has held leadership roles at Jaffe Holden Acoustics, The Sexton Group, JBL, Meyer Sound/LCS, Harman (BSS), Aphex Systems, Aviom, AtlasIED, Symetrix, and his own company, Sound Techniques. His career includes launching and managing successful manufacturers’ sales organizations, driving specification-based design adoption, advancing groundbreaking innovations such as the Variable Room Acoustics System (now Meyer Sound Constellation), for which he designed the first two installations in Los Angeles and Prague, and contributing to products deployed in iconic venues including Broadway, Disney theme parks, and Cirque du Soleil. 

 

Beginning as a live sound engineer and production company owner working with world-class artists and institutions, Denny brings a rare blend of hands-on field experience, strategic market insight, and a consultant-centered perspective to every engagement

 

 

Todd Stevens

Todd Stevens is a senior professional audio sales and systems specialist with decades of experience spanning loudspeaker system design, technical sales leadership, manufacturer representation, and customer enablement across diverse market verticals. He currently serves as Director of Loudspeaker Sales for the Americas at Biamp, where he leads the Loudspeaker Solutions Group and supports sound system design efforts for large venues, houses of worship, sports facilities, themed entertainment, and performance spaces throughout the region. Todd’s work bridges engineering, sales, logistics, and field support, with a focus on helping integrators and end users implement loudspeaker systems that achieve clear performance goals—balancing coverage, intelligibility, and budget realities. 

His background includes progressive roles with Waves Audio, Presonus, Manley Laboratories, and Community Professional Loudspeakers, providing him with a broad foundation across analog and digital audio, software-based signal processing, and professional loudspeaker development. With his collaborative approach and practical design mindset, Todd combines data-driven system evaluation with an appreciation for the subjective human experience of sound, bringing both technical rigor and real-world perspective to every project.

Reported by Gary Louie, PNW Section Secretary