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10 Reasons For
The K138ST is one the best selling projector currently available according to sales data from Amazon.
Easy to Use
One customer wrote in their reviews that it was comfortable and easy to hold. Expert review site Liveatpc.com said “So, when Acer placed this short throw projector in my hands, I was excited to watch all my backlogged”.
Good Technical Features
One Acer K138ST owner who reviewed it concluded that it had good features. Amazon Customer wrote on Amazon “Also, there are many fake features like Bluetooth” in their review.
Acer Has Good Projector Reviews
On average projectors manufactured by Acer are rated 79%, which is in the top 58% of all projector brands that we have assessed.
100 - 240V AC Input Voltage
This projector has a 100 - 240V AC input voltage, which is the most frequently found AC input voltage on projectors that were released more than a year ago.
Has a Built-In Speaker
The Acer K138ST has a built-in speaker, as do most of the other comparable spec projectors that have been on the market for around the same time as the K138ST.
It may also be worth also looking at one of the other data projectors with a built-in speaker currently available including the PH300 (£426.82), or the PW600 (£489.84) both from LG which has a better Rating.
+5 More reasons for
Supports 3D Image Projection
Like most of the other multimedia projectors of a comparable type and age to the K138ST, the Acer K138ST supports 3D image projection.
1920 X 1080 (HD 1080) Graphics Resolution
The highest resolution supported by the Acer K138ST is 1920 x 1080 (HD 1080). That's over six times the resolution of the most frequently found graphics resolution of 640 x 480 (VGA). The best resolution of all data projectors of a comparable age and type to the K138ST is 4096 x 2160 and the worst is 640 x 480 (VGA).
We compared all the other projectors that support a resolution of 1920 x 1080 (HD 1080) to this projector and we think because of it's better review score, the Infocus IN118HDXC (£354.99) is also worth considering.
Very Long Service Life of Lamp in Economic Mode
When compared to other multimedia projectors of this type and age that we have checked, the service life of lamp in economic mode of the Acer K138ST of 30,000 hours is one of the longest. The service life of lamp in economic mode of projectors of this type and age range from 800h to 30,000h.
Quite Low Power Consumption in Economy Mode
The lowest power consumption in economy mode of data projectors that have been on the market for a similar time to the K138ST is 38W, the highest is 890W, and the average power consumption in economy mode is 380W. When compared to other similar spec projectors that were released around the same time as the K138ST that we have checked, the Acer K138ST's power consumption in economy mode of only 38 Watts is one of the lowest.
7 Reasons Against
A Bit Expensive
One customer who purchased it concluded that it was not good value for money. Amazon Customer wrote on Amazon “The qualty of the picture is not really good regarding its high price” in their Acer K138ST review.
Does Not Support Full HD Projection
The Acer K138ST does not support Full HD projection. Most of the other projectors of a similar type and age to the K138ST also do not support Full HD projection.
Does Not Support WiFi Connectivity
The Acer K138ST does not support WiFi connectivity, although it is worth keeping in mind that most of the other projectors of a comparable type and age to the K138ST also do not support WiFi connectivity.
Quite Low Maximum Horizontal Synchronization
The lowest maximum horizontal synchronization of data projectors of this spec and age is 0.1kHz, the highest is 110kHz, and the average maximum horizontal synchronization is 91kHz. The Acer K138ST has a quite low maximum horizontal synchronization (only 0.1 kilohertz) compared to most of the other similar spec multimedia projectors that have been available for around the same time as the K138ST.
+4 More reasons against
Very Low Maximum Vertical Synchronization
The maximum vertical synchronization of multimedia projectors of this age and type range from 0.12kHz to 120kHz. The Acer K138ST has one of the lower maximum vertical synchronization (only 0.12 kilohertz) amongst comparable spec multimedia projectors of this age.
Very Small Optical Zoom
Projectors of a comparable spec and age to the K138ST have optical zooms of between 1x and 2.1x, and the average optical zoom is 1.4x. The Acer K138ST has a quite small optical zoom (only 1 times zoom factor) compared to most of the other projectors of this age and type.
Very Short Lamp Service Life
The Acer K138ST has a fairly short lamp service life (only 20,000 hours) compared to most of the other projectors of this age and type. The average lamp service life of comparable spec projectors that were released around the same time as the K138ST is 29,000h.
4 Other reasons to consider the Acer K138ST
OK Running Costs
The K138ST has an average 1 year running cost of £26 based on typical usage levels and energy prices, which is typical compared to the other 7 multimedia projectors of a comparable age and spec.
WXGA (1280x800) Native Projector Resolution
This projector has a native projector resolution of WXGA (1280x800), which is the most commonly found native projector resolution on 100000:1 contrast ratio projectors that have been on the market for a comparable time to it.
We compared all the other projectors that have a resolution of WXGA (1280x800) to this projector and we think the LG PW600 (£489.84) which has a better Rating is also worth considering.
Average Noise Level
With a noise level of 33 decibels, the Acer K138ST has a fairly standard noise level compared to most of the other multimedia projectors that are a similar age to the K138ST.
Projectors with a louder noise level that might also be worth considering include the LG PW600 (£489.84) (34dB) which is also higher rated.
+2 Other reasons
Average Projector Brightness
With a projector brightness of 800 ANSI lumens, the Acer K138ST has a pretty typical projector brightness compared to most of the other projectors of this age and spec.
Gone are the days when projectors were only used for presentations; now you can watch movies on your wall and not compromise on quality, sound and space. So, when Acer placed this short throw... Read more…
This product is good but it's not really a portable. It is smaller than others but there's no battery installed to take it away from home. It should be plugged into electricity all the time.
Also,... Read more…
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Total running cost over 5 years
Running costs for this projector have been estimated based on other similar projectors. If you know how much electricity and water the Acer K138STuses then please let us know by entering those figures in the boxes above.
Running this projector over 5 years will generate 0.13 tonnes of carbon dioxide (CO2).
To offset that much CO2 you would need to plant 4 tree seedlings and grow them for 10 years.
Previous and future annual running costs of the Acer K138ST assuming future electricity price inflation of 0.0600% per year. Edit inflation assumptions