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PMI Engineers Practice & Recording Studio

PMI designed and engineered a practice and recording studio in a luxury home in Northern California. The dedicated space inside the home needed complete sound isolation so the client could play, practice and record music without sound leaking into the rest of the house. PMI specified suspended walls, a sound door, and a range of acoustical panels and treatments to make the room sound great for its many uses. The plan drawing below shows one of the walls where we specified SõN™ Acoustic System Modules by MSR Acoustics - and to the right of that is the finished space showing the same wall in its final state, complete with Pete Townshend decorated acoustically transparent curtain using the high-quality printing process from the Salon Acoustics ™ line of decorative acoustical panels. For more information on PMI projects and services, please visit our website . For information on acoustical tuning systems and treatments from MSR Acoustics, click here .

PMI Engineers Screening Room at Martis Camp in Lake Tahoe

Martis Camp is the pinnacle of private, residential communities located on the north shore of Lake Tahoe, California. Comprised of 2177 acres, this community offers an abundance of amenities and year-round activities. The 18,000 square foot Family Barn was built for a wide range of uses - with a bowling alley, art studio, concert stage, and screening room. The compact 50-seat community screening room - designed and engineered by PMI - includes state-of-the-art picture and sound. While the project had some obvious limitations and compromises, it turned out to be a great-sounding room for this family-oriented community.  For more info and photos on PMI portfolio projects, visit our website . 

The Custom Home Theater Experience - Part 1

Sigmund Freud If you’ve been around custom home theater long, you’ve probably heard someone say that you should be all about the home theater experience, rather than just buying products and services. That‘s a nice platitude, but what exactly does it mean, and how do you put it into practice? For starters, to achieve an experience, you must delve into your psyche to meet the basic desires that drive everything we human beings do. It has been said that all our actions are based on seven main desires: Self Preservation, Freedom of Body and Mind, Material Gain, Recognition and Exclusivity, Love, Sex, and Absence of Fear. Of these, the most relevant to home theater are Recognition and Exclusivity and the Absence of Fear, which in this case would be apprehension toward undertaking a home theater project in the first place! In less-Freudian terms, you want to enjoy movies, music, etc., in your home and have something impressive to show your friends with as little worry and hassle as po...

The Importance of Diffusion

by Anthony Grimani “Um, what’s diffusion, and why do I need it?” is the question from my client. Slowly, I take a breath, count to ten, and consider my options. First, I could scream, stomp around the room, and pull out my hair. Second, I could suddenly remember that I’m terribly late for another meeting (which is probably true) and beg to be excused. Third, I could remain calmly in my seat, smile, and politely explain the answer. Considering the nature of this client and his job, it looks like it’s option number three. Here’s the sad thing. You might think that this client is a novice end user – the type whose digital clocks all blink 12:00. But he or she could just as easily be a custom integrator! I see it all the time: People who design home theaters for a living don’t know what diffusion is or why they need it. What’s particularly frustrating is that I have spent many hours over that past two decades doing my best to educate them. So let’s make this real. Do you know why diffus...

Home Theater Audio Standards - What Are We Trying To Do?

By Anthony Grimani So you claim that you’re putting together a high performance home theater. But do you fully understand what that comprises? Do you know all the little ins and outs of why some products work better than others in selected applications? I know that it’s hard to take time to read through technology reports, research papers, and product reviews to learn how to design the best possible theaters. So I’m going to help: I’ll give you some facts along with my honest unbiased opinion of what a home theater is supposed to be. And of course everyone reading this will agree with me… NOT! I know there will be tons of hate mail criticizing this or that position, but we gotta start somewhere; shoot now – we’ll talk later. Let’s first cover what the theater is supposed to do. It is supposed to reproduce sound and pictures as closely as possible to those intended by the creators of the program material. If the creator was good at it, you can get a realistic representation of natural...

Don't Spread It Too Thin - Making The Case for Using Thicker Acoustical Wall Treatments

by Anthony Grimani Home theater acoustical treatments need to be at least two inches thick, and preferably four inches thick for decent audio quality. Why? Because one-inch materials only treat sounds down to 1 kHz. Everything down below that is freely bouncing around the walls of the room.  For proper audio imaging and articulation, you need to control sound reflections down to at least 500 Hz, and preferably down to 250 Hz. Remember that the Middle A on a piano keyboard is 440 Hz, and you want to go down to that, at least. Just as bad, however, is creating an acoustically "dead" room. It is convenient to go in with one of the franchised stretched fabric wall systems to cover up all of the walls in a theater. They are simple, quick, clean, cost-predictable, but very wrong.  Read more - full article published in Residential Systems Magazine .

Spec It First

A Job Specification Document Can Help You Avoid Headaches I find that, more often than not, the best way to avoid project problems is by spending time up front creating a job specification document. This should be a multi-page paper that describes what the client is going to get, what the performance specifications are, who is responsible for what portions of the work, who will sign off on proper delivery of each portion, what each portion is going to cost, and what the deliverable deadlines are going to be. Keeping You Out of Trouble The mere process of having to take a time out to sit down and reflect on the all these issues will help you clarify the planning in your own mind. Once the document is written, it will help your staff in comprehending the intent of the work. It will help your client, the builder, the architect, and the interior designer, understand the degree of detail that goes into doing a properly integrated theater, whole-house audio/video/lighting system, etc. The p...

Performance Media Industries, Ltd.

61 Galli Drive, Suite B. Novato, CA 94949, USA
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