Set up your home theater like a THX master with certified products

Building a killer home theater involves more than just throwing a big wad of cash at your local electronics dealer. It requires planning, finesse, and scientific acoustic manipulation. The engineers at THX pioneered a lot of the methods and technologies used in today's top systems.

So we took a trip to their San Rafael, California, headquarters to get a lesson from the masters. Here's what we learned.

One way to create the ultimate home theater experience, not surprisingly, is to fill the room with THX-certified products. If you can afford to do that, awesome. But you still need to employ a set of design strategies to ensure that the gear performs it its peak capability. The following advice applies whether your sound-blasting budget allows only a couple hundred or as much as several thousand dollars.

 

The Seat:

What you sit on is just as important as where you're sitting. Here are some things to keep in mind when choosing furniture for your home theater.

• Keep chairs clear. Seats with high backs can block the audio coming from your surround sound system, compromising the experience.
• Place furniture clear of the speakers.
• Support your spine. This is about minimizing distractions. If you're back is stiff and your coccyx is numb, you're not going to feel that bass rattling your can.
• Get off the wall. Positioning seats next to the walls interrupts the path sound travels in most rooms.

The Room:

Before you start shoving seats and speakers in an open space, stop and look at the room. The acoustic chamber contributes about half of the potential quality of the sound and presentation. Plan the layout carefully.

The Picture:

Shop for the right TV to fit your room. You want a screen that's big enough to be enveloping, and small enough to be sharp and clear.

 

• What size screen should you get? You want a horizontal viewing angle of 40-degrees from your seats. There's an actual formula that helps you achieve this. Measure the distance of the screen to the main seat, in inches. Multiply that by .84 and you'll get a diagonal screen size (Distance x 0.84 = Screen Size). This a maximum screen size recommendation.
• If your seat is 72 inches from the screen, the formula would look like this: 72 x .84 = 60.4. So the maximum recommended screen is 60 inches. Of course, you can go larger. It's really personal choice. Just be sure that you don't have to move your head back and forth to keep up with the action on screen.

• Find a deal. Technology changes rapidly, so it's difficult to say what will be the best type of HDTV to purchase. THX would like you to purchase THX-certified displays. If you can afford the best, get it. But, get the best TV available in your price range at the time.

The Sound:

That rumbling crescendo at the beginning of a THX-certified film in a public theater, known as the Deep Note, emphasizes the importance of the system's speakers. THX told me that they do not certify speakers that are built in to a TV. If you've spent time listening to the tinny tones coming out of most TV speakers, you already know why.
 

The Electronics:

To connect the TV and speakers together, you want a configuration that's high in quality and low in complexity.

The Calibration:

Most sets come from the factory ready to watch a variety of content. But they can be set up to make sports look like soap operas. Here are two tips to get the best quality picture you can.

• Optimize it. Use a THX optimizer to help the system perform at its best. A THX optimizer is available on Terminator 2: Judgment Day, and it's $5.50 on Amazon. The latest THX-certified TiVos (http://www.tivo.com/products/tivo-premiere-elite/index.html) also have the optimizer built in.
• Process via the TV. Don't rely on an image processor that may exist in your receiver or other supplemental equipment. The TV's internal processor is the best, so check the settings to make sure it's in use.

It's probably obvious that THX-certified products come at a premium price. That said, the THX product certification process is legitimate and rigorous. The engineers run products through a incredible array of tests that make manufacturers jump through hoops to get the certification. If you want to know more about it—or you want to become a home audio guru—enroll in a professional training seminar hosted at the THX labs.