Epson EH-LS670B

Projecting a 120-inch image from 30 cm away from a wall, with built-in sound and Netflix ready to use: that is the promise of the EH-LS670. The successor to the EH-LS650, this ultra-short-throw model retains the Epson range’s core features (3LCD technology, laser light source, compact format) while adding a full Google TV platform, a Bose co-designed audio system, and calibration settings that the LS650 did not have.

A compact chassis designed to sit at the foot of the wall

The EH-LS670 measures 467 × 400 × 153 mm and weighs 7.4 kg. It is a discreet unit, available in white (diamond) or black (metallic), that sits on a low cabinet like a somewhat bulky set-top box. All connectivity is grouped at the rear, wall side: two HDMI inputs (including one eARC-compatible, HDCP 2.3), two USB-A ports, a jack audio output, a digital coaxial output, and a USB-B port reserved for maintenance. Wi-Fi 6E and Bluetooth 5.2 complete the package, though there is no Ethernet port (a USB-to-Ethernet adapter remains possible for a wired connection).

The ultra-short-throw optics feature a 0.25:1 throw ratio. In practice, around thirty centimeters of distance are enough to obtain a 120-inch image (305 cm diagonal). The image size range extends from 60 to 120 inches. This proximity to the projection surface eliminates two classic annoyances of video projection: shadows cast when someone passes in front of the beam, and the need to free up several meters of room depth.

Tri-LCD and laser: a bright image with no rainbow effect

In the ultra-short-throw projector market, almost all models rely on single-chip DLP panels from Texas Instruments. The EH-LS670 is an exception with its 3LCD technology: three 0.62-inch LCD panels (with C2 Fine processing) simultaneously display the red, green, and blue components. The practical result is the complete absence of the rainbow effect (or RBE, for Rainbow Effect), that phenomenon of fleeting colored flashes that some viewers perceive on DLP projectors. For people sensitive to this artifact, the LS670 is one of the very few laser UST models able to guarantee an image free of this flaw. Another advantage of 3LCD: no gray frame around the image, a frequent issue on 0.47-inch chip DLP models.

The light source is a blue mono-phosphor laser, rated at 3,600 lumens in both white brightness and color brightness (ISO and IDMS standards). This parity between the two measurements is an advantage of 3LCD technology compared with single-chip DLP projectors, whose color brightness is often lower than white brightness. In real conditions and depending on the selected picture mode, the measured light output may be noticeably lower than the theoretical value, a common difference for this type of product. That said, the brightness reserve remains sufficient for daytime use in a partially lit living room.

4K PRO-UHD: effective emulation, not native 4K

It must be clear on this point: the EH-LS670 is not a native 4K projector. Its LCD panels have a native resolution of 1920 × 1080 pixels. The “4K PRO-UHD” resolution relies on two-phase wobulation (pixel shifting): an opto-mechanical system shifts each pixel by half a pixel diagonally at high frequency, making it possible to display two slightly offset frames. Retinal persistence merges these two positions to produce an image perceived as finer, with around 4 million displayed pixels, or half of the 8.3 million of true 4K UHD.

In practice, the difference from native 4K is mainly noticeable on fine text or very detailed patterns viewed up close. On video content at a normal viewing distance, the sharpness gain compared with Full HD is clearly visible. 10-bit image processing, HDR10 and HLG compatibility, and the announced dynamic contrast ratio of over 5,000,000:1 contribute to a pleasant rendering with nuanced colors (up to 1.07 billion colors). Epson has integrated a processing engine called TRIPLE CORE ENGINE, associated with automatic optimization algorithms (AIPQ and AISR) that adjust sharpness, local contrast, and gradient handling in real time to reduce banding.

One limitation to keep in mind: the LS670 does not support Dolby Vision or HDR10+, two dynamic HDR formats found in many competing models. HDR handling relies on Epson’s own dynamic tone mapping, which adapts the HDR signal to the projector’s actual capabilities, an essential process since a projector’s maximum luminance remains far below HDR mastering levels (1,000 nits and beyond).

Google TV, Chromecast, and voice control

The switch from Android TV (on the LS650) to Google TV is one of the LS670’s most visible developments. The interface provides access to more than 10,000 apps via the Google Play Store, including the main streaming platforms: Netflix (natively available this time), Disney+, YouTube, Prime Video. Google Assistant is integrated for voice search and device control, and Chromecast lets you stream content from a smartphone or tablet without an external box.

The projector operates independently, without an external media player. Startup is fast: the laser turns on in a few seconds, with no warm-up time. The Epson Setting Assistant app, on a smartphone, helps with the initial setup by using the phone’s camera to adjust image geometry. Focus remains manual (a wheel accessible under a side cover), and image correction uses several tools: Quick Corner, arc correction, and point-by-point correction, useful when the projector is not perfectly centered or the projection surface is not entirely flat. The LS670 does not have automatic calibration sensors, unlike some competitors.

Bose-tuned sound, sufficient for everyday use

The audio partnership has changed compared with the LS650: Yamaha gives way to Bose. The integrated system remains a 20 W 2.1-channel setup with Dolby Audio compatibility. Four sound modes are offered (cinema, dialogue, music, and standard). This power level and configuration are sufficient for everyday use (series, TV news, YouTube content) without resorting to an external soundbar. For a more demanding movie session or for music content, an external audio system connected via the eARC output or the digital coaxial output will deliver better results. Bluetooth also allows the LS670 to be used as a wireless speaker, with the image turned off.

What changes compared with the EH-LS650

The chassis is strictly identical to that of the LS650, and the 3LCD panels are the same. The changes concern software and functional points: Google TV replaces Android TV, Bose replaces Yamaha for audio, game mode now includes ALLM (Auto Low Latency Mode) with a refresh rate that can reach 240 Hz and low latency, picture calibration parameters absent from the LS650 are now accessible (CMS adjustment, white balance, gamma selection), and the dynamic contrast ratio rises from 2,500,000:1 to over 5,000,000:1. Wi-Fi moves to 6E and Bluetooth to 5.2. However, the optical and lighting base has not been modified.

A laser built to last

The laser source is rated for 20,000 hours of operation, or about 10 years of use at a few hours per day. The absence of a lamp eliminates periodic replacements and their associated costs. Power-on is instant, with no preheating or cooldown on shutdown. In eco mode, power consumption drops to 103 W and operating noise falls to 20 dB, a very discreet level. In normal mode, expect 193 W and 29 dB. Epson backs the LS670 with a 5-year or 12,000-hour warranty (whichever comes first), a duration above the industry average.

Technical specifications

Image and projection

• Display technology: 3LCD (RGB liquid crystal shutter)
• Resolution: 4K PRO-UHD (1920 x 1080 x 2)
• Brightness: 3600 lumens (color and white)
• Contrast ratio: greater than 5000000:1
• HDR compatibility: HDR10, HLG
• Video processing: 10-bit
• Refresh rate: 192 – 240 Hz
• Color reproduction: up to 1.07 billion colors

Optics

• Throw ratio: 0.25 – 0.62:1 (ultra-short throw)
• Image size: 152 to 305 cm (60” to 120”)
• Projection distance: 0.3 to 0.7 m
• Zoom: digital (x1 to x2.5)
• Focus: manual

Light source

• Type: laser
• Lifespan: up to 20000 hours

Audio

• Integrated system: 2.1 channels (20 W)
• Technology: Sound by Bose
• Compatibility: Dolby Audio
• Audio modes: cinema, dialogue, music, standard
• Bluetooth: wireless audio streaming

Smart TV and streaming

• Interface: Google TV
• Voice assistant: Google Assistant built-in
• Applications: Netflix, streaming platforms, and others
• Built-in Chromecast

Gaming and smoothness

• Game mode (ALLM)
• Low latency
• Frame interpolation
• Compatible with consoles and cloud gaming

Processing and features

• 4K enhancement
• AI image optimization (AIPQ, AISR)
• Dynamic local contrast
• Geometric correction
  • Quick Corner
  • Arc
  • Point
• Automatic power-on
• HDMI CEC compatible

Connectivity

• HDMI x2 (including ARC / eARC, HDCP 2.3)
• USB-A x2
• USB-B (service)
• Jack audio output
• Coaxial digital audio output
• Wi-Fi 6E
• Bluetooth 5.2

Design and installation

• Format: ultra-short throw (TV stand)
• Dimensions: 467 x 400 x 153 mm
• Weight: 7.4 kg

Power consumption and noise level

• Power consumption
  • Normal mode: 193 W
  • Eco mode: 103 W
• Noise level
  • Normal mode: 29 dB
  • Eco mode: 20 dB

Durability and warranty

• Lifespan: up to 10 years of use
• Warranty: 5 years or 12000 hours
• Low maintenance (lamp-free laser source)

Box contents

• EH-LS670W projector
• Remote control (batteries included)
• Power cable
• Quick start guide

General information

The EH-LS670W is an ultra-short throw laser projector offering a bright 4K PRO-UHD image from 152 to 305 cm, suited to living spaces thanks to installation without setback. An all-in-one solution integrating image, Bose-engineered 2.1-channel sound, and a complete Google TV platform, it delivers an immersive experience with simplified setup.