Meridian Audio 810 Projector Outline Technical Specification, Display device, Lamp, Connections

810 Reference Video System

10-megapixel digital projector & scaler

Calibration: the key to quality

Trained staff at Meridian’s dedicated facilities individually calibrate each projector in a procedure that takes over four days to complete, mainly as a result of the sheer number of pixels to be calibrated. Different calibration steps require different groupings of pixels to be considered: for example flat field calibration is carried out for every group of four adjacent pixels; other parameters may require adjustment at the individual pixel level. The 810’s calibration technology was developed exclusively for Meridian by William Phelps.

It is not sufficient to calibrate a projector in isolation – especially one that offers such a high-resolution, high-quality image. Instead, the projector and its accompanying scaler are considered as a complete, indivisible system – for example, different calibration procedures are carried out to suit Standard and High Definition signals; the scaler determines the signal format and automatically activates the appropriate calibration profiles in the projector.

In addition, calibration bears in mind the conditions in the viewing environment. The aim of a projector is not to get the maximum light on to the screen: on the contrary, most dedicated home cinema rooms are darkened, and it is all too easy, with a powerful projection system, to get an image that is too bright – which apart from losing visual detail can lead to a tiring viewing experience.

The correct approach is to standardise the amount of light reflected from the screen. This is the method employed by the Society of Motion Picture and Television Engineers (SMPTE), and used throughout the film industry. Their standard requires a light level of a nominal16 foot-Lamberts to be

810 Projector

Outline Technical Specification

All information is subject to revision

Display device

•Aspect ratio 17:10 (Approx.)

•Display size (diagonal) 1.27”

•Effective Resolution 4096 x 2400

Lamp

•PKI Xenon

•Output up to 4000 lumens/825W

•Power output determined by calibration process for the application

•Accumulated lamp time counter and lamp replacement warning

Projection Lenses

•Several lens options available from very short throw (back-projection) to long throw

•Anamorphic 2.35:1 (Cinemascope®) capability

Optical system

•ON/OFF contrast 10,000:1 (typical)

•ANSI contrast 300:1 (typical)

•Peripheral brightness > 80%

Installation capability

•Vertical ±90 degrees

•Horizontal ±5 degrees

•Noise level <45dB(A)

reflected from the screen when no film is in the projector gate. In practice, the average brightness of a bright scene in a cinema is around 60% to 75% of this amount.

Thus the projector must be individually calibrated for the specific space in which

System features

•Associated 810 scaler accepts RGB480i–1080p 24/48/50/60

•Direct DVI inputs for 4k x 2k native

•Low-delay mode

•Display resolution 4096 x 2400

Connections

•Up to 4 DVI

•RS232 (for control)

•Ethernet

•USB

Power

•Input 100–120V, 200–240VAC Single-phase, 50/60Hz

•Max current <15A

•Power Consumption <1,500W

•Power Consumption (Standby) <2.7W

Physical characteristics

•Dimensions 663 x 793 x 342-362 mm

W D H (including lens and foot)

•Mass: Net 59kg Gross 69kg

•Operation Environment (Temperature):

+10°C – +35°C

•Operation Environment (Humidity):

Less than 80% (No condensation)

•Storage Temperature: –5°C – +60°C

Beyond High Definition… way beyond.

NTSC SD 720 x 480

PAL SD 720 x 576

HDTV 720p 1280 x 720

HDTV 1080i/p 1920 x 1080

Digital Cinema 2K 2048 x 1080

Digital Cinema 4K 4096 x 2160

Meridian 810 Reference Video System 4096 x 2400

This diagram provides a comparison of video resolutions, from standard definition to the Ultra High Definition 4096 x 2400 resolution of the Meridian 810 system – significantly higher than four full-spec HD screens

laid side by side. The purple and green rectangles (top left) indicate the resolution of a Standard Definition (SD) image – 720 pixels wide by 480 (NTSC) or 576 (PAL) high and generally interlaced. A 720p HDTV image is 1280 pixels wide by 720 high and progressive-scan, while a ‘full spec’ HDTV image is 1920 x 1080 progressive (‘1080p’) – 1080i (interlaced) images are also common. A standard Digital Cinema specification, generally referred to as ‘2K’, delivers 2048 x 1080 pixels progressive. The latest ‘4K2K’ Digital Cinema spec is 4096 x 2160, delivering an 8-megapixel image. The 810 projector goes beyond this to deliver a 10-megapixel. 4096 x 2400 image.