ProjectorDB

Christie LW551i vs Epson PowerLite L790U

Christie LW551i
Christie LW551i
MSRP $5,985
Epson PowerLite L790UEpson PowerLite L790U
MSRP $4,502
Key differences
White light output5,500 lm ANSI7,300 lm ISO
Native resolutionWXGA (1280 × 800)WUXGA (1920 × 1200)
Throw ratio1.5–3:11.35–2.2:1
Light sourceLampLaser (phosphor)
Fan noiseNormal 37 dB(A) · Eco 31 dB(A)Normal 34 dB(A) · Eco 26 dB(A)
PriceMSRP $5,985MSRP $4,502
Room fit
Distance to screen3.2–6.5 m2.9–4.7 m
Brightness
Rated brightness5,500 lmDerived7,300 lmDerived
White light output5,500 lm ANSI7,300 lm ISO
Colour light output—7,300 lm
Brightness uniformity—88%
Display system
Imaging technology3LCD3LCD
Chip / panel diagonal0.76 in0.67 in
On-screen resolutionWXGA (1280 × 800)DerivedWUXGA (1920 × 1200)Derived
Native resolutionWXGA (1280 × 800)WUXGA (1920 × 1200)
Native aspect16:10Derived16:10Derived
Contrast
Dynamic contrast3,000:1Over 5,000,000:1
Dynamic contrast methodDynamic iris—
Colour
Colour bit depth (per channel)—10 bit
Calibration
Picture mode memories4—
Light source
Light sourceLampLaser (phosphor)
Lamp power330 W—
Light-source life2,500 h normal · 3,000 h eco20,000 h normal · 30,000 h eco
Life defined as—50% brightness
Light output control—Continuous
Constant brightness mode—Yes
Optics
Throw ratio1.5–3:11.35–2.2:1
Image size30–600 in50–500 in
ZoomOpticalOptical
Zoom ratio2×Derived1.63×Derived
Focal length—20–31.8 mm
Aperture (f-number)—1.5–1.7
FocusMotorisedManual
Vertical lens shift-40–125%±50%
Horizontal lens shift±22%±20%
Motorised lens shiftYesNo
Lens memory slots3—
Vertical keystone12°30°
Horizontal keystone20°30°
Auto keystoneYes—
Corner correction8-point—
Interchangeable lensYesNo
Inputs & control
HDMI inputs2 × HDMI2 × HDMI (HDCP 2.3)
HDMI inputs (count)2Derived2Derived
Other video inputs+ VGA+ HDBaseT
Max input resolution1600 × 1200—
Audio inputs3.5 mm, RCA—
USB media playbackYesYes
Control portsRS-232, + Wired IRRS-232
PJLinkClass 1Class 2
Control-system driversCrestron+ Control4, Crestron, + AMX
Horizontal scan15–106 kHz26–135 kHz
Vertical scan56–120 Hz23.98–60 Hz
Smart platform
Wi-Fi—Wi-Fi 6E
EthernetYesYes
Casting—AirPlay 2, Miracast
Audio
Speaker power16 W10 W
Speakers21
LayoutStereoMono
Audio outputs—3.5 mm
HDMI audio return—NoneDerived
Physical & installation
Dimensions (W × D × H)498 × 476 × 147 mm440 × 304 × 122 mm
Weight8,900 g8,664 g
Colours—White
OrientationsTable, Ceiling, RearTable, Ceiling, Rear
Ceiling mount—4 × M4, screws ≤ 9 mm, 100 × 100 mm spacing
Dust filter—Replaceable
Environment & power
Operating temperature0–40°C0–45°C
Operating humidity10–85%RH20–80%RH
Altitude3,048 m · high-altitude mode3,048 m
Power drawMax 480 WNormal 415 W · Eco 305 W
StandbyUp to 0.35 W0.3 W
Networked standby—2.4 W
Mains input100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Noise
Fan noiseNormal 37 dB(A) · Eco 31 dB(A)Normal 34 dB(A) · Eco 26 dB(A)
Safety & compliance
Laser class—Class 1
Risk group—RG2
FDA laser notice—Notice 57
Marks+ CE, FCC, + UL, + CCCFCC
Support & ownership
Warranty3 yr (light source 1 yr or 500 h)🇺🇸 US 3 yr · 🇨🇦 CA 3 yr
User manualhttps://www.christiedigital.com/globalassets/resources/public/020-000461-02-christie-lit-man-usr-d1.pdfhttps://download2.ebz.epson.net/sec_pubs_visual/eai/projectors/pdf/useg/EN/UsersGuide_EBL890E_EN_EAI.pdf
Spare parts—Air filter V13H134AF0 · Mount V12H809001 · Mount V12H808001
In the box
In the boxPower cord, + Power adapter, Remote, Remote batteries, + User manual, + HDMI cable, + VGA cable, + Lens cap, + Software CDPower cord, Remote, Remote batteries, + Quick start guide
RemoteIR—