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Compact white DLP projector with short-throw lens, front-facing controls and two HDMI ports

OPTOMA

OPTOMA GT2100HDR 4200 lumen 1080p laser home theater projector

SKU CH-ER6Y-BMMWZ MPN GT2100HDR

throw laser projector casts a 100-inch image from a few feet away with 4,200 lumens for lights-on viewing

  • Screen diagonal0.91m ~ 7.42m (36 in ~ 292 in) diagonal
  • Image brightness4200
  • Power draw(standby) <0.5 W Power consumption (min) 119 W Power consump
  • Panel resolution1080p Full HD (1920 × 1080) 1080p 120 Hz at 8.6 ms 1080p 60
  • Highest resolution1920 × 1080
  • Screen ratio16:9

Model GT2100HDR

  • Bright 4200 lumens let you watch with lights on
  • throw lens projects a 100 inch image from just a few feet
  • Laser light source lasts up to 30000 hours with no lamp changes
  • Gaming ready with 1080p 120Hz at 8.6ms input lag
  • Eco design uses up to 50% recycled plastics and 97% recyclable packaging

What it is and who it is for

The Optoma GT2100HDR is a new DLP home-theatre projector that delivers 4200 lumens at native 1080p resolution. A laser light source rated for 30000 hours removes lamp replacements and keeps power draw low. Its 0.496:1 short-throw lens produces a 100-inch diagonal image from a short distance, suiting living rooms, bedrooms or compact gaming dens where ceiling mounting is impractical.

What it replaces and when the jump is worth it

The solid-state laser engine replaces traditional mercury lamps, cutting power consumption by up to 45 percent and eliminating warm-up time. If you currently run a lamp projector that demands frequent bulb changes or struggles with ambient light, the 4200-lumen output and 300000:1 static contrast make daytime viewing viable without blackout curtains. The external power supply also improves reliability and portability for semi-permanent setups.

Practical limits of the HDMI 2.0 interface

Two HDMI 2.0 inputs accept 4K UHD and HDR signals but downscale them to the native 1920x1080 panel. Gaming at 1080p 120Hz is supported with 8.6ms input lag, while 4K 60Hz content arrives at 17ms latency. The projector cannot display native 4K resolution or refresh rates above 120Hz, and its single 3.5mm audio output requires an external sound system or powered speakers for room-filling audio.

How it compares

Measured against everything we stock in Home Cinema Projectors, at today’s prices. Recalculated every night.

Price $1,785.99
Pricier than about 77% of the 234 comparable items (median $272.99).

Specifications

Product
Brand nameOptoma
Model nameGT2100HDR
Case colorWhite
Product typeDLP
Display
Screen diagonal0.91m ~ 7.42m (36 in ~ 292 in) diagonal
Image brightness4200
Panel resolution1080p Full HD (1920 × 1080)
1080p 120 Hz at 8.6 ms
1080p 60 Hz 17 ms
Highest resolution1920 × 1080
Screen ratio16:9
Contrast300,000:1
Contrast ratio - dynamic 2,000,000:1
Horizontal scan rate15 to 140 kHz
Vertical frequency24 to 120 Hz
Projection ratio0.496:1
Projection distance0.4m - 3.2m
Light sourceLaser
Lamp lifespan30,000 h
Audio & video
Lens focal length7.51
Connectivity
Network connection1 x RJ45
Ports & slots
Video input typesPC compatibility FHD, UXGA, SXGA, WXGA, HD, XGA, SVGA, VGA, Mac
2D compatibility NTSC M/J, 3.58 MHz, 4.43 MHz PAL B/D/G/H/I/M/N, 4,43 MHz
SECAM B/D/G/K/K1/L, 4.25/4.4 MHz 480i/p, 576i/p,
720p(50/60 Hz), 1080i(50/60 Hz), 1080p(50/60 Hz)
3D compatibility Yes (DLP 3D; PC frame sequential 120 Hz 3D, Blu-ray DVD 3D)
3D Full 3D
Video inputsInputs 2 x HDMI 2.0
Audio outputs1 x Audio 3.5 mm
USB portsUSB-A power 1.5A
Power
Power draw(standby) <0.5 W
Power consumption (min) 119 W
Power consumption (max) 173 W
Power supply100 V ~ 240 V, 50-60 Hz
Size & build
Product dimensions(W × D × H) mm 274 × 216 × 114
Product weightGross weight 4.2 kg
Net weight 3 kg
Shipping weight4.20 kg
Package size399 × 279 × 155 mm
In the box
In the boxAC power cord
Remote control with 1x CR2025 Battery
Basic user manual
Environment & compliance
Temperature range0 °C to 40 °C
Humidity limitsMax. Humidity 80%
Operating noise(min) 29 dB
Noise level (max) 36 dB

Other versions of this model

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Questions about this item

How much space do I need to project a 100 inch image with the 0.496:1 throw ratio?

The short throw lens produces a 100 inch picture from roughly 1.2 metres, with a usable throw distance range of 0.4 m to 3.2 m.

What is the correct order for connecting the two HDMI 2.0 inputs and the external power supply during first setup?

Connect the external power supply to the projector first, then plug it into mains power, and finally attach your HDMI sources to the two HDMI 2.0 ports.

When will the laser light source need attention after 30,000 hours of use?

The DuraCore laser is rated for 30,000 hours; after that period brightness will gradually decline and the whole light engine would be serviced rather than a lamp swapped.

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