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What do you need to know before building your 4K Home Theater System?

2018/02/22

To build your own home theater system, you need a projector first. But you cannot buy just ANY projector; you need a 4K projector. When we talk about 4K, it refers to the resolution. There’s generally 2 spec.: 3840 x 2160 or 4096 x 2160 pixels for 4K projectors. The more pixels, the more vivid the picture contents. That’s why a 4K projector will provide with you with the optimal viewing experience as if you were in the cinema. Besides resolution, there’s still another factor which determines if a projector can offer great picture performance: the projector mechanics. DLP is the leading projection display technology on the market and its supreme pixel-shifting technology can achieve true 4K resolution with 8.3 million distinct pixels. That is to say, a DLP 4K projector is the one which can bring you the most rich and delicate pictures. To enhance your viewing experience to the utmost, you also need to take into consideration the format of your videos and the video players. 4K Blu-ray discs and 4K Blu-ray players are the best choices. The former offers the great picture quality and the latter easy connectivity to the 4K projector, making playing and watching the film on the projector a great enjoyment. The following 5 questions will lead you to know more about how to pick out the right 4K DLP projectors. You will see how and why a 4K DLP projector works wonders for you and how to build a 4K home theater system at a suitable price.

According to CTA (Consumers Technology Association), 4K UHD must deliver 8.3 million distinct pixels on the screen, which is four times the resolution of Full HD 1080p.

Resolution Horizontal x Vertical Pixels Total Number of Distinct Pixels Other Names Devices
Resolution
2160p
Horizontal x Vertical Pixels
3840×2160, 4096x2160
Total Number of Distinct Pixels
8.3+ Million
Other Names
4K, UHD, Ultra HD, Ultra-High Definition
Devices
Projectors, TVs
Resolution
WUXGA
Horizontal x Vertical Pixels
1920x1200
Total Number of Distinct Pixels
2.3 Million
Other Names
Widescreen Ultra Extended Graphics Array
Devices
Projectors, monitors
Resolution
1080p
Horizontal x Vertical Pixels
1920x1080
Total Number of Distinct Pixels
2.1 Million
Other Names
Full HD, FHD
Devices
Projectors, TVs, monitors
Resolution
720p
Horizontal x Vertical Pixels
1280x720
Total Number of Distinct Pixels
0.92 Million
Other Names
HD, High Definition
Devices
Projectors, TVs

What is XPR Technology?

DLP XPR Technology is Texas Instruments’ pixel-shifting technology to achieve True 4K resolution with 8.3 million distinct pixels.

XPR Technology achieves True 4K by producing 8.3 million distinct pixels regardless of the DMD chip’s number of native pixels. In addition to doubling the 0.66” DMD’s 2716 x 1528 pixels, XPR also perfectly quadruples the 0.47” DMD chip’s 1920 x 1080 pixels to generate True 4K 8.3 million pixels with lightning-fast pixel shifting speed.

What is the difference between XPR Technology and 4K-Enhancement Technology?

Although both XPR Technology for DLP projector and 4K-Enhancement Technology for other projector mechanism are pixel-shifting technologies, the results they produce are completely different.

• XPR Technology produces 8.3 million distinct pixels regardless of the DMD chip’s number of native pixels. In addition to doubling the 0.66” DMD’s 2716 x 1528 pixels, XPR also perfectly quadruples the 0.47” DMD chip’s 1920 x 1080 pixels to generate True 4K 8.3 million pixels with lightning-fast pixel shifting speed.

• 4K-Enhancement Technology can only produce 4.1 million pixels by doubling the native 1920 x 1080 pixel resolution, achieving less than half of the True 4K requirement for 8.3 million pixels.

*This is due to the nature of liquid crystals that cannot withstand the switching speed required to produce 8.3 million pixels.

What Do You Need to Enjoy 4K HDR?

• 4K Blu-ray player

• BenQ 4K HDR projector

  ‧ Make sure source output is set to 3840*2160 resolution at 60 Hz

  ‧ Make sure BenQ 4K HDR projector selects the correct HDMI colour range (full or limited of RGB; YUV limited); also check source player output.

• 4K movies or 4K videos

  ‧ 4K UHD Blu-ray sets come with two discs: one 1080p disc and one 4K UHD disc. Be sure to use the 4K UHD disc.

• HDMI 2.0 cable connected to HDMI1 port (Please refer to the question “Which HDMI Cables Are Needed for 4K HDR? ” as a reference)

Which HDMI Cables Are Needed for 4K HDR?

Not all HDMI cables can support 4K UHD resolution or HDR content. What is the difference between HDMI cable versions and which one do you need?

Certification Standard
Version
Characteristics
Remark
Certification Standard
Standard
Version
Pre-1.4
Characteristics
Cannot support 4K or HDR
Remark
 
Certification Standard
High-Speed
Version
1.4
Characteristics
Certified for 4K at 24/30Hz fps only
Remark
 
Certification Standard
2.0
Version
Certified for 4K at 60Hz fps
Characteristics
 
Certification Standard
2.0a/b
Version
Certified for 4K at 60Hz fps with HDR
Characteristics
Great Choice
Certification Standard

Premium High-Speed
Version
N/A
Characteristics
Stricter testing for 4K HDR at 60Hz fps and expanded color
Remark
Best Choice

What’s HDCP 2.2? Is HDCP 2.2 compatibility important?

HDCP 2.2 is a copy-protection file format, and all common Blu-ray discs are protected by HDCP 2.2. For those who want to enjoy a smooth Blu-ray disc viewing experience without any hindrance, all the DVD players, amplifiers, projectors and HDMI cables employed should be checked for compatibilities with HDCP 2.2 decryption, so as to ensure the Blu-ray discs can be played properly.

Can I stream 4K Netflix content with BenQ’s 4K projectors?

Yes. However, as explained in the question above, since 4K Netflix files are also protected by HDCP 2.2, all the Netflix packages you’ve subscribed to, the audiovisual system, the projector, and the HDMI cables used must be compatible with HDCP 2.2. Also, an internet connection speed of at least 25 megabits per second is strongly recommended for a favorable 4K streaming experience. Furthermore, for 4K 60fps video contents, a 4K 60Hz-compatible HDMI cable is also required (please refer to the question “Which HDMI Cables Are Needed for 4K HDR?” as a reference). For more information regarding Netflix, please refer to Netflix’s website .

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