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Acer K138ST
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Acer K138ST Projector

100000:1 WXGA (1280x800) 33dB Jul 2015
Contrast Ratio (typical) Projector Native Resolution 3D Noise Level Release Date
Share your ideas wherever you go with Acer Portable LED Projectors. Discuss concepts, show videos on big screens and motivate others while you re on the road -- without needing a computer. With... More
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9 Reasons For

Easy to Use

One customer who reviewed the Acer K138ST thought it was comfortable and easy to hold. Liveatpc.com mentioned “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 reckoned that the product had good features. Amazon Customer mentioned in their Acer K138ST review on Amazon “Also, there are many fake features like Bluetooth”.

Acer Projectors Have Good Reviews

Projectors manufactured by Acer are some of the better projectors according to average user and expert reviews.

Supports 3D

The Acer K138ST supports 3D, as do most of the other projectors of a similar age and spec to the K138ST.

Chart Edit

Has a Built-In Speaker(s)

Like most of the other comparable spec projectors that are a similar age to the K138ST, the Acer K138ST has a built-in speaker(s).

We compared all the other projectors with a built-in speaker(s) to this multimedia projector and we think because of it's better review score, the LG PW600[plb_2860339_price] is also worth considering.

Read more Less Chart Edit

1920 X 1080 (HD 1080) Supported Graphics Resolutions

The highest resolution supported by the Acer K138ST is 1920 x 1080 (HD 1080). That's over six times the resolution of a 640 x 480 (VGA) multimedia projector, which is the most frequently found resolution supported by comparable spec projectors that are a similar age to the K138ST. Across all projectors of a comparable type and age to the K138ST the resolution ranges from 640 x 480 (VGA) to 4096 x 2160.

Chart Edit

Quite Long Service Life of Lamp (economic Mode)

The Acer K138ST has a very long service life of lamp (economic mode) (30,000 hours) compared to most of the other projectors that were released more than a year ago. The shortest service life of lamp (economic mode) of comparable spec multimedia projectors that are a similar age to the K138ST is 800h and the longest is 75,000h.

Chart Edit

Very Quiet Noise Level (economic Mode)

The noise level (economic mode)s of projectors that came out more than a year ago range from 26dB to 40dB. At only 29 decibels, the Acer K138ST has a quite quiet noise level (economic mode) compared to most of the other comparable spec projectors that have been available for a similar time to the K138ST.

Chart Edit

Quite Low Power Consumption (economy Mode)

With a power consumption (economy mode) of only 38 Watts, the Acer K138ST has one of the lowest power consumption (economy mode)s amongst similar spec projectors of this age. Across all the projectors of this age and type the power consumption (economy mode)s range from 38W to 890W, and the average power consumption (economy mode) is 360W.

Chart Edit

7 Reasons Against

A Bit Expensive

One customer who reviewed this projector considered that it was not good value for money. Amazon Customer gave the product a score of 20 out of 100 and said on Amazon “The qualty of the picture is not really good regarding its high price” in their Acer K138ST review.

Only 100V AC Input Voltage

This projector has a 100 - 240V AC input voltage, which is the most commonly found AC input voltage on projectors that are a similar age to it.

Chart Edit

Does Not Support Wi-Fi

Like most of the other data projectors of a comparable age and type to the K138ST, the Acer K138ST does not support wi-Fi.

Chart Edit

Very Dim Projector Brightness

At only 800 ANSI lumens, the Acer K138ST has a fairly dim projector brightness compared to most of the other comparable spec projectors that have been on the market for a similar time to the K138ST. The dimmest projector brightness of projectors that came out around the same time as the K138ST is 300 ANSI lumens, the brightest is 11,000 ANSI lumens, and the average projector brightness is 3,900 ANSI lumens.

If this projector projector brightness is too dim for you then you might want to look at the Epson EH-TW5350[plb_3024662_price] (2,200 ANSI lumens), or the Acer H7550[plb_2821607_price] (3,000 ANSI lumens) which also has a higher rating.

Read more Less Chart Edit

Very Low Horizontal Synchronization (max)

With a horizontal synchronization (max) of only 0.1 kilohertz, the Acer K138ST has a quite low horizontal synchronization (max) compared to most of the other projectors of this type and age. The lowest horizontal synchronization (max) of similar spec data projectors that have been around for around the same time as the K138ST is 0.1kHz, the highest is 110kHz, and the average horizontal synchronization (max) is 91kHz.

Chart Edit

Quite Small Optical Zoom

The average optical zoom of multimedia projectors that came out around the same time as the K138ST is 1.3x, and the optical zooms range from 1x to 2x. The Acer K138ST has one of the smallest optical zooms (only 1 times zoom factor) amongst projectors of this age.

Chart Edit

Very Short Service Life of Lamp

The service life of lamps of 100000:1 contrast ratio projectors that were released more than a year ago range from 20,000h to 30,000h, and the average service life of lamp is 28,000h. At only 20,000 hours, the Acer K138ST has a fairly short service life of lamp compared to most of the other data projectors that were released one year ago.

Chart Edit

4 Other reasons to consider the Acer K138ST

Running Costs Are Average

The average 1 year running cost of the K138ST is £26 based on average energy prices, which is typical compared to the other 5 data projectors of a comparable type and age.

Released Over a Year Ago

It was over a year ago when Acer released the K138ST.

WXGA (1280x800) Projector Native Resolution

This projector has a projector native resolution of WXGA (1280x800), which is the most commonly found projector native resolution on data projectors that have been around for a comparable time to it.

Chart Edit

Average Noise Level

The Acer K138ST has a pretty standard noise level (33 decibels) compared to most of the other 100000:1 contrast ratio projectors that have been available for around the same time as the K138ST.

Other multimedia projectors with a louder noise level that you might want to look at include the LG PW600[plb_2860339_price] (34dB and higher rated).

Read more Less Chart Edit

Specification

Projector
Contrast Ratio (typical)
Projector Native Resolution
Projector Brightness
Maximum Digital Resolution
Keystone Correction, Vertical
Vertical Synchronization (min)
Horizontal Synchronization (max)
Vertical Synchronization (max)
Horizontal Synchronization (min)
Zoom Capability
Contrast Ratio (dynamic)
Projection Distance
Supported Aspect Ratios
Screen Size Compatibility
Native Aspect Ratio
Projection Technology
Number of Colours
Lamps
Lamps Quantity
Service Life of Lamp (economic Mode)
Lamp Type
Service Life of Lamp
Lens System
Optical Zoom
Throw Ratio
Digital Zoom
Focus
Video
3D
Supported Graphics Resolutions
Full HD
3D-Ready
HD-Ready
Ports & Interfaces
DVI Port
DC-In Jack
USB 2.0 Ports Quantity
HDMI Ports Quantity
VGA (D-Sub) Ports Quantity
HDMI Connector Type
AC (power) in
Networking
Wi-Fi
Ethernet LAN
Storage
Card Reader Integrated
Performance
Noise Level
Mac Operating Systems Supported
Windows Operating Systems Supported
Noise Level (economic Mode)
Vertical Scan Range
Plug and Play
Multimedia
Built-In Speaker(s)
RMS Rated Power
Number of Built-In Speakers
Design
Ceiling Mountable
Colour of Product
Product Type
Display
Built-In Display
Power
Power Source
Power Consumption (typical)
Power Consumption (economy Mode)
Power Consumption (PowerSave)
AC Input Voltage
Operational Conditions
Operating Relative Humidity (H-H)
Operating Temperature (T-T)
Weight & Dimensions
Weight
Packaging Content
Carrying Case
Manual
User Guide
Remote Control Type
Handheld Remote Control
Batteries Included
Quick Start Guide
AC Adapter Included
Cables Included
Other Features
Audio Input
Audio Output

Expert Reviews

26 October 2015

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…

User Reviews

(1)
Reviewed 17 March 2016 by Amazon Customer
(Verified Purchase)

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…

Running Cost

Hours of Use Per Day: hours
Show running costs over: years
Electricity cost when switched on £25.64
Electricity cost when on standby
@ £0.139 per kwh - Edit electricity price and usage
kwh per hour
kwh per hour left on standby
Electricity price £per kilowatt hour
Annual electricity price inflation %
Water cost when switched on
@ £0.003474 per litre - Edit water usage and price
litres per hour
Water price £per litre
Annual water price inflation %
Submit Energy Consumption Figures
Total running cost over 5 years £25.64
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.
0.13T
Running this projector over 5 years will generate 0.13 tonnes of carbon dioxide (CO2).
4
To offset that much CO2 you would need to plant 4 tree seedlings and grow them for 10 years.

+- Manufacturer's Description

Product Identifiers

Manufacturer Part Numbers acer k138, acer k138s, acer k138st, acer p238840, acer n167504, acer k138sti, special k138, acer 1280x800, acer n167504w, special k138s, acer p238840p, acer acerk138, special k138st, acer mrjlh1100, acer acerk138s, mrjlh11001 k138, acer mrjlh1100a, acer acerk138st, mrjlh11001 k138s, acer acerk138sti, mrjlh11001 k138st, acer computer gmbh k138, acer computer gmbh k138s, acer computer gmbh k138st, acer computer gmbh ansi100k1, acer computer gmbh 3d1280x800
Barcodes 00888863023677, 04053162882102, 04713147866250, 04713147866267, 04713147866274, 04713147930852, 04713392225673, 05054629859889

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See How Other Projectors Compare to the Acer K138ST

NEC M323X vs Acer K138ST

NEC M323X vs Acer K138ST
NEC M323X Acer K138ST
£ 535.98 £459.99
Vastly Higher Maximum Vertical Synchronization
75% Brighter Projector Brightness
70% Higher RMS Rated Power
One More VGA (D-Sub) Port
£76 More Expensive
Shorter Service Life of Lamp in Economic Mode

Acer H6518BD vs Acer K138ST

Acer H6518BD vs Acer K138ST
Acer H6518BD Acer K138ST
£ 569.99 £459.99
75% Brighter Projector Brightness
One More VGA (D-Sub) Port
One More HDMI Port
40% Higher RMS Rated Power
£110 More Expensive
25,000h Shorter Service Life of Lamp in Economic Mode

Acer P1287 vs Acer K138ST

Acer P1287 vs Acer K138ST
Acer P1287 Acer K138ST
£ 429.99 £459.99
£30 Cheaper
3,400 ANSI Lumens Brighter Projector Brightness
Two VGA (D-Sub) Ports
4W Higher RMS Rated Power
One Less Built-In Speaker
Vastly Lower Maximum Horizontal Synchronization
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