1080p 3D 3x 4K android app audio Audio & Video business case cloud computer dlp environment Excel fingerprint Game Google Google Home HD HDMI HDTV home hue LEDs lens mac movies MP3 native Optoma Pixel Pixel 2 Pixel 2 XL projector remote control Review RJ45 security smart software sound system speaker speakers technology texas instruments theater Travel uhd usb video warranty wifi wireless Xbox Xbox One Xbox One X

Optoma UHD51A review: A 4K UHD HDR smart projector with Alexa and Google Home support

Optoma UHD51A review: A 4K UHD HDR smart projector with Alexa and Google Home support


The Optoma UHD51A is a strong smart projector with the added bonus of voice command support and built-in media participant.

  • Wonderful 4K UHD HDR image
  • Numerous show choices
  • Pretty quiet
  • Alexa/Google Home support
  • Wi-fi casting
  • Inbuilt media participant
  • Wonderful worth given the worth and options
  • Mild bleed on account of chipset used
  • Requires dongle for wi-fi casting and Alexa/Google Home support
  • Wi-fi casting was a bit buggy
  • Shiny black end is a mud/fingerprint magnet


Not solely are 4K UHD projectors coming down in worth however they’re additionally getting some new options. Our Optoma UHD51A evaluate takes a take a look at a 4K UHD HDR house theatre projector with each Alexa and Google Home support.


The Optoma UHD51A 4K UHD projector has the next options and specs:

  • World’s 1st Alexa Voice assistant supported projector
  • Vibrant 2,400 lumens & 500,000:1 excessive distinction
  • Model new designed lens for 4K UHD decision with 1.3x zoom and good throw for theater room or front room use
  • eight.Three million pixels on display, CTA licensed 4K UHD product
  • Distinctive colours, 100% Rec. 709, 80% DCI-P3 shade gamut protection
  • Beautiful HDR efficiency (HDR10 suitable), BT2020 suitable
  • Optoma PureMotion Know-how
  • Constructed-in Media Participant, and Wifi Show support
  • Helps Full 3D and +10% Vertical lens shift
  • Show Know-how: Texas Devices 4K UHD Zero.47″ DMD DLP chipset
  • Native Decision: 4K UHD 3840×2160
  • Brightness: 2400 ANSI Lumens
  • Distinction: 500,000:1
  • Mild Supply: Lamp
  • Lamp Life: 15000/10000/4000 hours (Dynamic/Eco/Brilliant mode)
  • Throw Ratio: 1.2 – 1.56:1
  • Zoom Sort: 1.3x Guide
  • Lens Shift: +10% vertical
  • I/O Connectors: 2x HDMI 2.Zero, VGA (RGB/YPbPr), Audio in Three.5mm, Audio out S/PDIF, Audio out Three.5mm, 12V set off, RS232, RJ45, USB-A Three.Zero (Energy, 1.5A), USB-A (service), USB-A (wi-fi dongle), USB-A (Alexa)
  • Speaker (Watts): 2x 5W
  • Facet Ratio: 16:9 Native, Four:Three and LBX Suitable
  • Projection Display Measurement: max. 300″
  • Projection Distance: 1.05 – eight.05 m
  • Projection Lens: F/1.94 to 2.23, f/12.81 to 16.74
  • Uniformity: 80%
  • Pc Compatibility: UHD, WQHD, WUXGA, FHD, UXGA, SXGA, WXGA, HD, XGA, SVGA, VGA, Mac
  • Video Compatibility: 480i/p, 576i/p, 720p(50/60Hz), 1080i(50/60Hz), 1080p(24/50/60Hz), 2160p(24/50/60Hz)
  • Horizontal Scan Fee: 31~135KHz
  • Vertical Scan Price: 24 – 120Hz (120Hz for 3D)
  • Displayable Colours: 1073.Four million colours (10 bit)
  • Noise Degree: 25dB (Eco mode)
  • Energy Provide: 100~240V, 50~60Hz, auto-switching
  • Energy Consumption
    • Vibrant: Typ. 337 W Max. 371 W @ 110VAC, Typ. 323 W Max. 355 W @ 220VAC
    • Eco: Typ. 247 W Max. 272 W @ 110VAC, Typ. 239 W Max. 263 W @ 220VAC
  • Lamp Sort: 240W
  • Safety: Kensington lock port, password (OSD)
  • On Display Show: 10 Languages: English, Español, Français, Deutsch, Português, Italiano, Русский, 簡体中文, 日本語, 한국어
  • Non-compulsory Wi-fi: Sure
  • RoHS: Compliant
  • Dimensions (W x D x H): 5.1 x 15.Four x 11.1″ (393 x 282 x 118mm)
  • Weight: 11.75lbs (5.3kg)
  • Optoma UHD51A 4K UHD smart projector
  • Energy Cable
  • Wi-fi/Alexa USB dongle
  • Distant Management
  • HDMI Cable
  • Lens Cap
  • Primary Consumer Guide
  • Guarantee Card


The Optoma UHD51A is fairly commonplace wanting so far as projectors are involved. Black in color, it’s simply over 5-inches in peak, 15-inches extensive, and 11-inches deep.

The entrance of the projector homes the lens, offset to the proper (when dealing with it), the IR receiver to the higher proper of the lens, and air flow outlet to the left. The lens encompasses a focus ring across the outdoors for adjusting the image focus.


Entrance view of the Optoma UHD51A smart projector.

The left aspect has extra outlet vents, and the suitable aspect is the place you’ll discover the inlet vents.

The again of the projector has the standard ports one would anticipate on a projector, in addition to a couple others. From left to proper (when taking a look at it) are the RJ-45 connector, RS232 connector with USB-A Alexa connector under it, HDMI 1 and HDMI 2 v2.Zero connectors (each with HDCP v2.2), VGA, 12V Out, Three.5mm Audio in and Audio Out ports stacked, USB-A media port, USB wi-fi port, and a USB service port with S/PDIF connector beneath it. The usual energy socket and Kensington lock port are situated close to the underside left of the again.


Again view of the Optoma UHD51A smart projector.

The highest of the projector is the place you’ll discover the management panel which is situated behind the lens close to the again of the highest of the projector. The management pad has buttons for energy, enter, menu, residence, return, and 4 directional keys. Slightly below this are three LEDs for on/standby, lamp, and temperature. In entrance of the management panel is a second IR receiver. Simply behind the lens is the Lens Shift Dial and Zoom Lever. The Optoma emblem is screened on the highest of the projector to the suitable of the management pad.


The highest management pad, IR receiver, and indicator LEDs.

Lastly, the underside of the projector options three tilt-adjustment ft, one centered within the entrance and two at every nook within the again.

The small white distant itself is fairly commonplace with energy, supply, house, menu, again, mute, quantity, show mode, choice, and arrow keys/enter buttons.


The included distant.


Establishing the projector itself was fairly simple. Between the tilt-adjustment ft, zoom, lens shift, and focus, it was straightforward to get a crisp image on my 106-inch display.


The main target, zoom, lens shift, and tilt-alignment ft permit for effective tuning the picture.

Should you want to use the projector with the Alexa Talent or Google Home, there’s some setup required. The setup is fairly straightforward and the Optoma SmartProjection app walks you thru each in a really simple style though you do need to register an Optoma Mydevices Cloud Account.


The Optoma UHD51A is the primary projector we’ve examined with the brand new Texas Devices 4K UHD Zero.47″ DMD DLP chipset. One aspect impact of this chip that we observed immediately is the truth that there’s a further mild bleed of round Three-Four″ across the image. Put one other method, when arrange with a display with a black border, there are a few inches of sunshine that goes past the border when the picture is about up correctly inside the body. Once we requested Optoma about this difficulty, they talked about that it’s a chipset problem and not a selected problem with the projector.

“The shadow border around the projected image from the Optoma UHD50 and UHD51A is inherent to the architecture of the new Texas Instruments 0.47 DMD chip used. It is not noticeable when used with a projection screen with black borders and does not affect picture quality. These projectors display high-quality 4K UHD with HDR and will perform as expected.”

After prolonged use, it wasn’t as noticeable, however when you’ve got OCD like me, you’ll need to guarantee you might have a thicker body or a darkish wall to eat this additional mild.


An unlucky aspect have an effect on of the brand new TI Zero.47″ DMD chipset – shadow mild bleed as is seen to the left of the black border of the display.

That apart, the 4K UHD HDR show of the Optoma UHD51A was crisp and clear when projected from a distance of 130″ throwing a 106″ picture. There are many customization modes to get the color saturation and brightness that you simply want in each non-HDR and HDR codecs.

A few of the show customization choices embrace:

  • Show Mode: Cinema, HDR, HDR Sim(ulation), Recreation, Reference, Shiny, Consumer, 3D, ISF Day, and ISF Night time
  • HDR: Auto, Off
  • HDR Image Mode: Shiny, Normal, Movie, Element
  • Brightness, Distinction, Sharpness, Colour, Tint
  • Gamma (non-3D): Movie, Video, Graphics, Commonplace (2.2), 1.eight, 2.Zero, 2.Four
  • Gamma (3D Mode): 3D
  • BrilliantColor: 1-10
  • Shade Temperature: D55, D65, D75, D83, D93, Native
  • Colour Gamut: Native, HDTV, Presentation, Cinema, Recreation
  • Non-HDMI Colour Area: Auto, RGB, YUV
  • HDMI Colour Area: Auto, RGB(Zero-255), RGB(16-235), YUV
  • Shade Matching, Hue Achieve, Saturation Achieve, RGB Achieve/Bias
  • Frequency, Part, Horizontal Place, Vertical Place
  • Dynamic Black: On, Off
  • Brightness Mode: Eco, Brilliant
  • Digital Zoom: -5 ~ 25
  • Facet Ratio: Four:Three, 16:9, Native, Auto
  • PureMotion: Off, Low, Center, Excessive
  • 3D Mode: On, Off
  • 3D Format: Auto, SBS, Prime and Backside, Body Packing

General, the Optoma UHD51A has a really good 4K UHD image with strong HDR when supported by the content material you’re consuming. As you possibly can see from the listing above, there are greater than sufficient color settings and changes you possibly can play with to get the show good on your viewing setting.

Whereas the UHD51A was brilliant sufficient in our basement setup with its 2400 lumens and 500,000:1 distinction ratio, Optoma additionally simply launched a brighter model — the Optoma UHD51ALV — with Three,000 lumens for people who require extra mild throw.


The projector itself runs on Android OS. It includes a fairly easy interface with three major sections: Projector, Software, and Settings. Every class is fairly simple and lets you configure the projector, entry your language and community settings, and launch Wi-Fi Show, Media Participant, and Alexa configuration.

So far as settings go, we coated most of them above within the Show part however some others of word embrace with the ability to examine Lamp Hour, Filter Utilization Hour, regulate energy settings, view a check sample, set the projection mode (entrance, rear, front-ceiling, rear-ceiling), toggle excessive altitude mode, and extra.

The companion Optoma SmartProjection app is required to help with establishing the UHD51A with Alexa and/or Google Home. Whereas it initially launched with Alexa support, Google Home support was added whereas we had the unit for testing. The app walks you thru the method properly and after accomplished can be utilized to handle your Optoma units in addition to shortly entry an inventory of obtainable Alexa Talent and Google Assistant instructions. To be trustworthy, the app undoubtedly has a really outdated look however it’s easy and does what’s required of it.

In an effort to forged to the Optoma UHD51A, you’ll need to obtain one other app referred to as EZCast. Sadly, we encountered frequent stutters and lengthy loading occasions when making an attempt to forged movies or photographs to the projector from a Pixel 2 XL. Nevertheless, you may as well view content material from a USB stick on the built-in media participant which labored a lot better. The media participant helps every thing from MPEG to MP4 and MKV in addition to JPG, PNG, MP3, WMA, AAC, PCM-WAV, and ADPCM-WAV so there’s not a lot it may’t play. For the enterprise oriented, the media participant can even show PDF, Phrase, Excel, and PowerPoint paperwork with some limitations.


The Optoma UHD51A takes about 30 seconds or so to energy up and 15-20 seconds to energy off. It’s additionally pretty quiet and when watching films or enjoying video games the sound of the fan wasn’t distracting in any respect.


The Optoma UHD51A is fairly quiet when passing air by means of it for cooling.

The projector additionally does an awesome job of auto-switching between normal and HDR content material. This was most noticeable when switching between video games on the Xbox One X that have been 4K HDR suitable and people who weren’t. There are a number of seconds the place the display goes black whereas it switches over however the information panel within the higher left nook lets you understand at a look what mode it’s in.

So far as the Alexa and Google Home performance is worried, the projector responded accordingly. There are extra Google Home instructions out there than Alexa ones, nevertheless, so there’s a particular benefit to utilizing Google Home. With Alexa, you need to use instructions like “Alexa, turn on/off <projector name>” in addition to altering quantity, inputs, and USB Media Participant playback like play, pause, cease, subsequent, begin over, and extra.

Google Home, then again, has a plethora of Google Assistant instructions that you need to use with the Optoma SmartProjection integration. Just like the Alexa instructions, you need to use it to show the projector on and off, in addition to modify the quantity, change inputs, and management the USB Media Participant. Nevertheless, you may as well management different projector settings together with altering the show mode, change HDR mode, and toggle PureMotion. It’s also possible to use Google Assistant to retrieve useful info from the UHD51A by asking it to “help me.”

Whereas each labored nicely sufficient, the added controls with Google Home make it an apparent selection between the 2.


As is the case with most projectors, whereas the 2 5W audio system are acceptable in a pinch, they undoubtedly lack any bass or a lot definition. You’ll undoubtedly need to hook this into a correct sound system for max enjoyment.


With an MSRP of $1699.99USD, the Optoma UHD51A 4K UHD HDR smart projector is already decently priced. Toss in Alexa and Google Home support alongside a built-in media participant and wi-fi casting support and you’ve received respectable worth for the worth.


In the event you’re out there for a 4K UHD HDR projector, the Optoma UHD51A will certainly do the trick and has the added bonus of voice command support and a number of different options that add worth.

(techaeris.com, http://bit.ly/2DrwVKZ)


(perform(d, s, id)
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = “//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.6”;
fjs.parentNode.insertBefore(js, fjs);
(doc, ‘script’, ‘facebook-jssdk’));(perform(d, s, id)
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = “//connect.facebook.net/en_US/sdk.js#xfbml=1&appId=1567257206822990&version=v2.0”;
fjs.parentNode.insertBefore(js, fjs);
(doc, ‘script’, ‘facebook-jssdk’));(perform(d, s, id)
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = “//connect.facebook.net/en_US/all.js#xfbml=1&appId=”;
fjs.parentNode.insertBefore(js, fjs);
(doc, ‘script’, ‘facebook-jssdk’));(perform(d, s, id)
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = “//connect.facebook.net/en_US/sdk.js#xfbml=1&appId=362229103967952&version=v2.0”;
fjs.parentNode.insertBefore(js, fjs);
(doc, ‘script’, ‘facebook-jssdk’));