Steinway Lyngdorf’s P200 surround processor
In my previous post, I talked about the intriguing video trends I came across at the recent custom integrators CEDIA Expo in Denver. While there weren’t as many new developments on the audio side, I did notice a few continuing and developing trends throughout the show that will have an impact on the luxury home cinema market. And, unlike some of the premium video solutions on the horizon, these are all things that can be implemented in a home theater immediately!
HIGHER CHANNEL COUNT
While immersive surround systems such as Dolby Atmos, DTS:X, and Auro3D are pretty much de facto in newly installed luxury home cinemas, we need to remember that these formats have been available in the home market for only about five years, and until fairly recently the channel count for most of these systems maxed out at 12 in a 7.1.4 configuration (seven ear-level speakers, a subwoofer, and four overhead speakers).
But there has been an explosion of systems that support up to 16 channels in a 9.1.6 array, which adds front width speakers at ear level and an additional pair of overhead speakers. While having 15 (or more) speakers in a room might seem excessive, creating a seamless and truly immersive experience in large rooms that have multiple rows of seating requires additional channels to create cohesion between speakers as objects travel around the surround mix.
Companies offering new 16-channel AV receivers and preamp/processorss include JBL Synthesis, Arcam, Acurus, Bryston, Emotiva, and Monoprice. Some companies are even pushing the boundaries beyond 16, including StormAudio, Steinway Lyngdorf, Trinnov, JBL Synthesis, and Datasat.
BETTER BASS IN EVERY SEAT
Three home theater masters—Theo Kalomirakis, Joel Silver, and Anthony Grimani—presented a full-day training course titled “Home Cinema Design Masterclass,” where they discussed best practices in home theater design. Grimani, president of Grimani Systems and someone who has worked on more than 1,000 rooms over his 34-year career, stated that 30% of what people like about an audio system happens between 20 and 100Hz—the bass region. In short, if a system’s bass response and performance aren’t good, the whole system suffers.
But low frequencies are difficult to pull off correctly, especially across multiple seating positions, which is the ultimate goal in a luxury cinema. Good bass is possible for multiple listeners, but multiple subwoofers are always needed. Two subs are better
than one, three subs are better than two, and four subs are better than three. (But Grimani stated that adding more than four subs actually has diminishing results.)
All the best home cinemas feature multiple subwoofers, not for louder bass, as one might think, but for more even bass at every seat. The best theaters deliver slam and impact at the low-end, but are also quick and free of bloat, which is what multiple good subs can deliver.
In that same master class, Tony Grimani also claimed that achieving good bass performance almost always requires the correct use of equalization. Virtually every home theater receiver or processor sold today incorporates some form of room-correction software—either proprietary like Yamaha’s YPAO or Anthem’s ARC, or a third-party solution like Audyssey. At its simplest, these software systems employ a microphone to measure tones emitted by the speakers, which are used to calculate the distance from the speaker to the listener as well as to set channel levels. The more advanced systems employ equalization and other types of filters in an attempt to optimize how the room interacts with the signal.
Three of the most revered and powerful room-correction systems all hail from Europe: Trinnov Audio (France), Dirac (Sweden), and Steinway Lyngdorf’s RoomPerfect (Scandinavia). These systems offer more adjustments, filters, and flexibility that less expensive, more mass-market offerings in order to make any room sound its absolute
best. (For more on the importance of room correction, read this post by Dennis Burger.)
One of the big developments in room correction featured at the CEDIA Expo was Dirac’s new Live Bass Management module. An add-on to the existing Dirac Live correction system, it will aggregate measurement and location data from multiple subwoofers in a system to determine how best to distribute bass evenly across a room. It will also correct low-frequency sound waves produced by the main speaker pair so they’re in sync with the rest of the system.
But just having access to the best room-correction devices isn’t enough, as the best luxury rooms are calibrated by professionals who have been trained in acoustics to the Nth degree. This small group of top-tier calibrators travels the world with kits costing tens of thousands of dollars in order to measure, sample, adjust, and tweak the parameter of every speaker and subwoofer in your theater to wring out the very last drop of performance.
Probably the most experienced writer on custom installation in the industry, John Sciacca is
co-owner of Custom Theater & Audio in Murrells Inlet, South Carolina, & is known for his writing
for such publications as Residential Systems and Sound & Vision. Follow him on Twitter at
@SciaccaTweets and at johnsciacca.com.