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BenQ LK830ST specifications and in-depth review

BenQ LK830ST

Manufacturer: BenQ

The BenQ LK830ST is a compact short-throw projector built around a laser light source, making it a practical choice for environments where space is limited but image scale matters. Weighing 3400 g and measuring 296 × 232 × 120 mm, it fits comfortably on most surfaces while still supporting a maximum projection size of 180″. A built-in smart TV platform, AirPlay, Chromecast, and Miracast support are all included, allowing flexible content access without additional hardware.

On the technical side, the BenQ LK830ST outputs a native 4K resolution at a 60 Hz refresh rate with 30-bit color depth, and its 4000 ANSI lumens brightness rating suits well-lit rooms as much as darker settings. HDR10 and HLG are both supported, though HDR10+ and Dolby Vision are not. Connectivity includes one HDMI port, two USB ports, Wi-Fi, Bluetooth, and an S/PDIF output, while audio is handled by a single 15W built-in speaker. Operating power consumption sits at 320 W, dropping to 0.5 W in standby, and audible noise measures 33 dB under standard operation and 29 dB in eco mode.

Pros
  • Laser light source eliminates the need for traditional bulb replacements and supports a rated lamp life of 200 hours
  • 4K output resolution combined with 30-bit color depth and HDR10 and HLG support delivers a wide color and dynamic range
  • A minimum throw distance of 0.5 m allows large images up to 180 inches in spaces where longer projection distances are not possible
  • Built-in smart TV platform with AirPlay, Chromecast, Miracast, and Bluetooth removes the dependency on external streaming devices
  • Wireless connectivity includes Wi-Fi, Bluetooth, and multiple screen mirroring protocols, offering flexible device compatibility
  • Standby power consumption of just 0.5 W keeps idle energy use very low
Cons
  • No motorized focus or zoom means all image adjustments must be made manually, which can be inconvenient once the unit is mounted or positioned
  • The single 15W mono speaker setup lacks stereo output and does not support Dolby Atmos, limiting audio quality for larger viewing environments
  • No RJ45 ethernet port means a wired network connection is not possible
  • A 16.7 ms response time may not be well suited for fast-paced or latency-sensitive content
  • Only one HDMI port is available, restricting simultaneous connection of multiple external sources
  • Eco mode reduces lamp life to just 0.5 hours, making it effectively unsuitable for extended low-power use
Who is this for?

This projector is well suited to home theater setups and professional presentation environments where large-screen 4K projection is needed without the luxury of a long throw distance — the 0.5 m minimum throw makes it practical in compact rooms or tight installation spaces. The built-in smart TV platform, along with AirPlay, Chromecast, and Miracast support, means it works comfortably for users who want a cable-free streaming experience without relying on external media players. Its laser light source and HDR10 support also make it a reasonable fit for users who prioritize image longevity and color accuracy over time.

Who is this NOT for?

Users who need low-latency performance for fast-paced or competitive gaming may find the 16.7 ms response time and 60 Hz refresh rate limiting, as these figures are not optimized for that use case. The absence of stereo speakers and Dolby Atmos support makes it a poor match for anyone expecting a self-contained, immersive audio experience without additional external equipment. Similarly, those requiring multiple simultaneous wired source connections will find the single HDMI port and complete lack of an RJ45 ethernet port restrictive, particularly in office or classroom environments where wired reliability and multi-device hookups are expected.

General info:

lamp life 200 h
audible noise 33 dB
has laser light source ✓
audible noise (eco) 29 dB
operating power consumption 320W
lamp life (eco mode) 0.5 h
width 296 mm
height 120 mm
thickness 232 mm
weight 3400 g
standby power consumption 0.5W
volume 8240.64 cm³

The BenQ LK830ST uses a laser light source with a rated lamp life of 200 hours, though eco mode reduces this to 0.5 hours. Operating power consumption is 320 W, while standby draws just 0.5 W. In terms of acoustics, the unit produces 33 dB of audible noise under normal operation, dropping to a quieter 29 dB in eco mode. Physically, the projector measures 296 mm wide, 232 mm deep, and 120 mm tall, with a total volume of 8240.64 cm³ and a weight of 3400 g, reflecting a relatively compact and portable form factor for its category.

Projection quality:

ANSI lumens 4000 lumens
output resolution 4K
response time 16.7 ms
has motorized focus ✕
maximum projection size 180"
has motorized zoom ✕
supports HDR10+ ✕
bit depth 30-bit
has manual focus ✓
minimum throw distance 0.5 m
refresh rate 60Hz
supports Dolby Vision ✕
supports HDR10 ✓
supports HLG ✓

The BenQ LK830ST delivers a 4K output resolution at a 60 Hz refresh rate with 30-bit color depth, and its 4000 ANSI lumens brightness allows it to fill screens up to 180″ from a minimum throw distance of just 0.5 m. HDR10 and HLG are both supported for wider dynamic range compatibility, while HDR10+ and Dolby Vision are not. Focus is handled manually, as neither motorized focus nor motorized zoom are included. Response time stands at 16.7 ms, and all image adjustments are made through manual controls rather than powered mechanisms.

Connectivity:

HDMI ports 1
has AirPlay ✓
Has Bluetooth ✓
supports Wi-Fi ✓
USB ports 2
has Chromecast built-in ✓
has a VGA connector ✕
has a DVI connector ✕
supports Miracast ✓
RJ45 ports 0
Has S/PDIF Out port ✓

The BenQ LK830ST offers a range of wired and wireless connectivity options, including one HDMI port, two USB ports, and an S/PDIF audio output, though it lacks both a VGA connector, a DVI connector, and an RJ45 ethernet port. On the wireless side, it supports Wi-Fi, Bluetooth, AirPlay, Chromecast built-in, and Miracast, providing broad flexibility for streaming and screen mirroring from a variety of devices without relying on physical cables.

Features:

has stereo speakers ✕
has a remote control ✓
has built-in smart TV ✓
has a built-in speaker ✓
audio output power 1 x 15W
has Dolby Atmos ✕

The BenQ LK830ST includes a built-in smart TV platform and comes with a remote control for straightforward navigation. Audio is handled by a single built-in speaker rated at 15W — stereo speakers are not present, and Dolby Atmos is not supported. While the audio setup is modest, the integrated smart TV functionality allows direct content access without requiring an external streaming device.

Final Verdict

The BenQ LK830ST positions itself as a capable 4K laser projector for users who need large-screen output in constrained spaces, with its 0.5 m minimum throw distance and 4000 ANSI lumens making it particularly effective in rooms where conventional long-throw units would struggle. The laser light source, HDR10 support, and built-in smart platform with broad wireless streaming compatibility give it a well-rounded feature set for home theater and professional display use. That said, its single HDMI port, manual-only focus, and modest mono audio setup mean it works best when paired with external audio and used in scenarios where input flexibility is not a priority. For users whose needs align with its strengths, the LK830ST delivers a technically solid and practical projection solution.

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