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A Bonus Room, Engineered for Performance: The Bison HTA Home Theater

by Nyal Mellor April 28, 2026

A Bonus Room, Engineered for Performance: The Bison HTA Home Theater

Client Profile

Jeff Mery of Bison HTA, a lifelong music enthusiast and audio professional, set out to create a home theater that could do two things at once: deliver reference-grade cinematic performance while remaining a livable, multi-use space. His goal wasn’t simply output—it was coherence, immersion, and consistency, with predictable performance that holds up across content, seats, and volume levels.

Project Overview

This theater evolved over several years through incremental upgrades—speakers, processors, amplification, subwoofer configurations, calibration tools, and layout refinements. The turning point came when the room stopped being treated as a backdrop and was engineered as the foundation for system performance.

Acoustic Frontiers was engaged to optimize loudspeaker and height-channel placement, perform a full acoustic analysis, and develop a comprehensive acoustic treatment design addressing reflections, decay behavior, and room modes — ensuring predictable, repeatable performance.

Room Overview

The project involved converting an upstairs bonus room, working within a set of structural and spatial constraints that directly influenced system design.

The room measures 24.5 feet in length with an 8-foot ceiling, with a width that varies across the footprint-approximately 16 feet at the entry wall, narrowing to ~14.5 feet along the bathroom wall, and expanding to roughly 20 feet at the equipment rack location. This creates an irregular geometry that introduces additional complexity in predicting and managing low-frequency behavior across the space.

The room is also located on the second story, built on a suspended wood floor that sits largely above the garage. Unlike a slab foundation, this type of construction introduces structural flex and energy absorption, both of which affect low-frequency performance and require consideration during system design and calibration.

At the rear of the room, a dedicated office area occupies part of the footprint, requiring careful planning for surround speaker placement and rear subwoofer positioning to maintain performance while preserving usability. At the front, the system is anchored by a ~120-inch-wide 2.4:1 cinemascope screen, with primary seating positioned just over 10 feet from the image when reclined, placing the listener well within the intended field of view.

The goal was not to deaden the room, but to shape its behavior, balancing control and energy to achieve a space that supports both impact and immersion without sacrificing realism.

Acoustic Frontiers Solutions

The solution was built around a single premise: you can’t calibrate your way out of room acoustic issues. If the room is injecting strong early reflections, uneven decay, modal resonances, and boundary-related cancellations, no amount of processing or component upgrades will fix it.

With an 8-foot ceiling, vertical reflections were a critical issue requiring mitigation. Ceiling treatment was fully integrated into the reflection-control strategy, improving dialogue intelligibility, reducing image smear, and increasing object precision in immersive playback.

Front-wall control addressed early reflection energy and speaker boundary interference related cancellation through the sub/speaker bass management related crossover region. The result was a more stable front stage, with reduced image wandering, improved timbre and more impactful bass from response flatness improvements. 

Image features Wave Diffusers by Acoustic Frontiers

Through thorough analysis of the level, time delay, direction, and spectral content of each speaker/boundary reflection, absorption and diffusion are used to intentionally balance reflected energy in all Acoustic Frontiers acoustic treatment designs. Our objective is an acoustic environment where direct sound retains priority, reflected energy supports immersion, and imaging or timbral shifts are minimized.

The outcome is not simply a deader or quieter space. It is a room that behaves predictably and consistently across different content and volume levels. Reflections are managed. Decay is balanced across the spectrum. Response in the speaker/sub crossover range is consistent. Spatial cues remain intact. Performance becomes repeatable because the room is no longer an uncontrolled variable—it is engineered as part of the system.

Equipment:

Speakers

  • (3) Revel PerformaBe F228Be (LCR, behind an acoustically transparent screen)
  • (6) Revel Performa3 series for wides/surrounds/rears (for timbral consistency)
  • (4) Ascendo on-ceiling coaxials for height channels (chosen to achieve correct placement vs. joist-placement limited options if using in-ceilings)

Subwoofers

  • (4) Harbottle sealed 18" subs at the front (configured for Trinnov WaveForming)
  • (2) Harbottle Carbon dual-12 subs at the rear (C212 pair / “C412” configuration) on stands to achieve required placement geometry
  • Note: There are plans to transition the system to a full HYPERSUB subwoofer system. The first step will be replacing the rear subwoofers with F-15s, which offer a more suitable form factor for the space.

Electronics / Processing / Sources

  • Trinnov Altitude platform (with advanced routing/processing infrastructure)
  • Multi-channel amplification with DSP capability
  • madVR Envy Extreme video processing
  • Kaleidescape Terra + Strato player
  • Dedicated equipment closet (noise/light isolation), thermal management via AC Infinity inline ventilation

Projection / Screen

  • JVC laser projector platform (RS-series) with anamorphic lens
  • ~120" wide cinemascope (2.4:1) screen; seating ~10.5' from image (reclined)

The Results

 

The measurable “win” wasn’t a single curve. It was behavior:

  • Bass that stays attached to the front stage, rather than “big but detached”
  • Improved dialogue intelligibility
  • More stable imaging and cleaner object transitions across the bed layer
  • Immersive audio objects localize to the correct location, not reflected approximations
  • A heightened sense of immersion—where the room “disappears,” spatial cues feel continuous, and listeners consistently describe the experience as more enveloping and lifelike

The room also passed an underrated test: it sounded controlled even before playback. As one visitor put it, “this room sounds really good just standing in here and talking.”

In the Words of the Client

“My goal was simple: create an experience that surpasses a commercial theater—and I believe we’ve achieved that. But you don’t get there by chasing equipment upgrades alone. You get there by respecting physics. Don’t fight it. You’ll lose that battle 100% of the time. Get the room right, and everything else starts working the way it should.” ~J.M.

About Jeff Mery

Getting the most out of a home theater or media room requires a balance of best practices, detailed analysis, and the ability to adapt to each space. Bison HTA delivers a comprehensive approach to room tuning and calibration, grounded in both quantitative and real-world performance.

Services include full room calibration (Trinnov, Dirac, and others), multi-subwoofer placement and optimization, acoustic treatment recommendations, and system consultation, along with unbiased equipment guidance.

Jeff is a CEDIA member and holds HAA HT3 and Trinnov Level 2 certifications. Learn more at www.bisonhta.com

Learn More

Want a deeper look at how Jeff's system came together? Check out his build thread on the AVS Forum and watch the video below:




Nyal Mellor
Nyal Mellor

Author



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Nyal Mellor, Founder, Acoustic Frontiers

  • (415) 524-8741
  • Serving USA & Canada
  • Fairfax, Northern California, USA

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