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The THX Certified Dominus is the closest approximation to a public cinema experience that you can achieve in your own home. Largest and most powerful THX Certified performance class. Ideal for use with immersive surround formats and 2-3 rows of seating. Unsurpassed performance in 2-channel hi-fi listening rooms.
- Horizontal Viewing Angles
- Image Resolution and Horizontal Viewing Angles
- Vertical Viewing Angles
- Dealing with Multiple Rows of Seats
The horizontal viewing angle is the angle subtended by a straight line from each side of the screen to the seating position. The main two standards in the commercial world are the SMPTE and THX specifications as summarized in the diagram below: New cinemas built to THX specifications have a minimum viewing angle of36 degrees from the last row of se...
Visual acuity data give us useful information about when a person should be able to appreciate the full benefit of different resolutions. 1. 480p – 4.1x width 2. 720p – 2.7x width 3. 1080p – 1.7x width (equivalent to 33 degrees viewing angle with a 2.35:1 screen) 4. 4k – 0.8x width (over 60 degrees viewing angle with a 2.35:1 screen!) Higher resolu...
The CEDIA recommendation, which is based on SMPTE guidance, is or no viewer to have an angle of greater than 15 degrees to the top or bottom of the screen. Typically this puts viewers eye’s at 1/3rd to 1/6th of screen height.
In larger home theaters multiple rows of seats are common. This introduces some compromises and challenges: 1. Horizontal viewing angles. Due to the smaller screen sizes and viewing distances in a home theater the viewing angle changes much faster than it would do in a cinema. A front row in a theater with three rows of seats might have a viewing a...
THX requires that the back row of seats in a theater have at least a 26 degree viewing angle and recommends a 36 degree viewing angle. - SMPTE and THX screen widths: Based on the viewing distance supplied to the calculator, these are the minimum screen widths required to meet the SMPTE and THX recommendations discussed above.
Use either THX or SMPTE recommendations based on your preference; Using the Calculator Screen Size Input. Use the slider to select your screen size; Range: 20″ to 100″ (measured diagonally) The selected size appears above the slider; Measurements are in inches (standard for screen sizes) Resolution Selection. Choose between three resolution ...
- Here are the main criteria to test your system. Before you can start calibrating your home theater, you need to know the criteria for which home theaters are evaluated.
- Avoid sitting too close to your speakers if you can help it. The easiest way to make sure you’re getting the most out of your system is to move further away from your speakers.
- If you add a center channel, the sweet spot turns into a sweet triangle. Almost every audiophile I've talked to knows about the coveted "sweet spot" but few of them have heard of the sweet triangle — an area in the shape of the triangle behind the sweet spot that sounds just as good as your Reference Seating Position (the technical name installers use instead of "sweet spot").
- Balance your speakers by using a 105dB mid-band pink noise test tone. Right, so you can save yourself a lot of time by buying three of the same speakers for your left, right and center channels.
Then select your screen’s shape – standard 16:9, ultra-wide 21:9 or movie theater-style 2.35:1. Lastly, pick your display type – LED/LCD, OLED or projector. Then let the calculator work its magic! It will return three suggested viewing distances: optimal, minimum and maximum. The optimal distance is the viewing sweet spot for your setup.
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Field-of-View based viewing distances: The THX and SMPTE specifications are based on a field-of-view being a certain width or wider, meaning that all seats must be closer than a certain distance to the screen. In general, the wider the field of view (the closer the viewer sits to the screen), the better. This specification does not take screen ...
