Optoma EH412ST Review

It’s not always easy finding a projector that produces both immersive images and powerful sound. Most models concentrate on picture quality, relying on consumers to improve the audio as needed. However, there are models like the Optoma EH412ST that are designed to do both.

The EH412ST is easy to set up, produces stunning images, and delivers clear, crisp audio. Not only can you lose yourself in the on-screen images, but you also have the sound quality to match. While the projector seems to come with everything you need to put on impressive presentations or use for home entertainment, it’s always a good idea to take a closer look before you bring it home. (>>> Check current price on Amazon)

Optoma EH412ST Projector Review of Specifications:

 Optoma EH412ST
Contrast Ratio50,000:1
Brightness (Lumens)4,000 ANSI
Throw Distance1.3' - 11.2'
Screen size36" - 307"
Internal Speakers10.0 Watts Mono
Input lag32ms
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Image Quality

On-screen images are bright and clear, even in ambient lighting. Whether you’re using the projector for a presentation or binge-watching movies and shows during the day, the 4,000 lumens rating ensures colors and details are vivid and crisp.

1080p resolution ensures high-definition images, and the projector is also 4K UHD compatible. Blacks are deep and white bright due to the 50,000:1 contrast ratio. You also won’t have to deal with color fading or bleeding, thanks to the 6-segmented color wheel and 10-bit color processing technology. Colors are accurate on-screen whether it’s a graph, movie, or game.

Audio Quality

Projector manufacturers don’t always think about audio. However, the EH412ST from Optoma is different. To ensure audio is clearly heard, the projector comes with a 10-watt internal speaker. You’ll hear crisp, clear audio from any point in the room.

It has the power needed to push sound throughout the room, without distortion at higher volume levels. Whether it’s audio from a presentation or your favorite movie, you won’t have any problems hearing the on-screen action.

Ease of Installation and Set-Up

Optoma EH412ST connections

It doesn’t matter if you’re setting the projector up in the class or boardroom or at home. You don’t want to spend hours trying to install the component and align on-screen images. You won’t have this problem with the Optoma projector, it’s designed to allow for flexible installation. It’s also a breeze to center images on the projector screen.

Weighing slightly over 7 lbs., you won’t have trouble moving the projector around as needed. Since it’s a short-throw model, you need less the 4-feet to cast 100” images. Digital zoom makes it easy to bring charts, graphs, and other images up close. If you need to center an image, the digital keystone correction function will help. It also comes with manual focus for fine-tuning image clarity.

Consumer Impressions

Consumers agree that onscreen images are bright and clear. They are also impressed with the 10-watt speaker. It won’t produce surround sound but it’s enough to ensure audio is crisp and clear. The projector is also ideal for schools and offices due to its easy portability. However, it has been mentioned that images are difficult to align if the projector is not placed in front of the screen.


  • Bright, vivid images
  • Accurate colors
  • Powerful sound
  • Flexible installation
  • Acceptable input lag for gamers


  • It is often difficult to properly align and center images if the projector is not placed in front of the screen


If you are looking for a projector that’s easy to set up and produces both stunning images and audio, the Optoma EH412ST is worth taking a closer look at. Images are bright and detailed with the lights off or on. You’ll also be impressed with the audio quality from the 10-watt speaker. (>>> Check current price on Amazon)

It’s lightweight so you can move it as needed. The EH412ST even comes with a lag time that gamers won’t hate. Whether you need a projector for home, school, or work, this model from Optoma may have everything you’re looking for.