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Optoma EP1691

alaTest has collected and analyzed 32 reviews of Optoma EP1691. The average rating for this product is 4.0/5, compared to an average rating of 4.2/5 for other Projectors for all reviews. Opinions about the size and image quality are generally positive. The price and usability are also appreciated. There are some critical comments about the reliability and noise.

usability, price, image quality, size

noise, reliability

We analyzed user and expert ratings, product age and more factors. Compared to other Projectors the Optoma EP1691 is awarded an overall alaScore™ of 79/100 = Good quality.

Review analysis

(Based on 32 reviews)

Expert Reviews  

User Reviews  

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Consumer review ( review summary for Optoma EP1691


alaTest has collected and analyzed 23 user reviews of Optoma EP1691 from The average user rating for this product is 4.0/5, compared to an average user rating of 4.2/5 for other Projectors on Reviews about the size and price are overall positive. The image quality and usability are also appreciated, whereas some have doubts about the reliability and noise.

usability, image quality, price, size

noise, reliability

83% of the reviews on give this product a positive rating.

This summary is based on the products: Optoma EP1691 WXGA DLP Multimedia Data ProjectorOptoma EP1691 WXGA DLP Multimedia Data Projector

Jul, 2018

Expert review by (

Optoma EP1691


This powerful and portable business projector is tailor made for widescreen notebooks.

Wide aspect ratio, Full-featured remote control, High contrast ratio

Noticeable fan noise

Consumer review (

GREAT deal!


Awesome balance of contrast, brightness, and color fidelity in a relatively cheap package. Very portable too! It comes with a carrying case

No DVI or Component inputs, though this is easily remedied with adaptors

Sep, 2008

Consumer review (

Great Projector!!!


I use it as a home theatre projector and I am able to put an 83 inch screen on a white wall, it makes watching movies and playing xbox AMAZING!!! Definitely would recommend you to buy this one on e B a y!!!

It is really well built. Light weight, lamp hours are great, brightness is good under most lighting conditions, small and compact, HDMI input

Weak speaker, gets EXTREMELY HOT!!!! EXPENSIVE

Aug, 2008

Product Specifications

The EP1691 native Widescreen, True HD digital projector is designed for mobile applications to offer all the quality and functionality of a high-end projector whilst in a compact, stylish design. Exceptional brightness 2500 lumens, in a light (1.4kg) compact design with advanced color enhancement technology to give a vibrant image in any environment. EP71691 is a versatile high specification multi-media projector for use in the boardroom, watching a film or sport or playing the latest video games at home.

Audio Output


Dimensions & Weight


Display (Projector)

Class:Digital projector
Colour Support:24-bit (16.7 million colours)
Display Resolution Abbreviation:WXGA
HD Image Format:720p
High Definition:High Definition
Image Brightness:2500ANSI lumens
Image Contrast Ratio:2500:1
Max Image Size:7.78m / 778cm/9.43m/9.43m / 943cm
Max Resolution:1280 x 768
Max Screen Distance:10m/12m
Min Image Size:0.78m / 78cm/0.79m/0.79m / 79cm
Min Screen Distance:1.2m
Native Aspect Ratio:Widescreen
Recommended Use of Projector:Cinema
Type:DLP Projector


Compatibility:Mac / PC/PC
Manufacturer:Optoma Technology
Packaged Quantity:1
Product Line:Optoma

Projector Lamp

Bulb life cycle:2000hour(s)

Service & Support

Type:3 years warranty

Video Input

Analogue Video Format:M-NTSC / NTSC 4.43 / PAL-B/G / PAL-D / PAL-H / PAL-I / PAL-M / PAL-N / SECAM B/G / SECAM D/K / SECAM K1 / SECAM L
Analogue video Signal:Component video / Composite video / RGB / S-Video/Composite video / RGB / S-Video
Digital Video Standard:Digital Visual Interface (DVI)/High-Definition Multimedia Interface (HDMI)