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LG 55LM8600 55-Inch Cinema 3D 1080p LED Smart TV — main product image
LG

LG 55LM8600 55-Inch Cinema 3D 1080p LED Smart TV

★★★★★3.7 (241 reviews)
1080p

Six pairs of 3D glasses, a 240Hz refresh rate, and built-in Wi-Fi Smart TV features make the LG 55LM8600 a full cinematic living room upgrade in one package.

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Overview

The LG 55LM8600 is a 55-inch LED-LCD television built around LG's Cinema 3D passive polarized technology and a 1080p Full HD panel. The 240Hz TruMotion refresh rate is LG's motion processing system — a combination of backlight scanning and frame interpolation that targets smoother motion on fast content. Picture processing runs through LG's Triple XD Engine, which handles noise reduction, upscaling from lower-resolution sources, and the 2D-to-3D conversion feature. The edge LED Plus backlighting delivers strong peak brightness for a well-lit room, though contrast ratios are limited compared to full-array or OLED displays. Six pairs of passive 3D glasses are included, making this a genuinely ready-to-use 3D home theater setup without additional accessory purchases.

When this television launched, it was positioned as a premium living room centerpiece — and the 55-inch Cinema Screen design with its ribbon stand still looks clean in a contemporary setup. For users who primarily watch broadcast TV, cable, Blu-ray, or content through an external streaming device plugged into one of the four HDMI ports, the 55LM8600 remains a capable 1080p display with a smooth motion profile. The built-in Smart TV platform is the most dated aspect of the package: the 2012-era app ecosystem has lost support from Netflix, Disney+, and most major streaming services, meaning a Roku, Fire TV, or Apple TV 4K is effectively required for modern streaming use. Pair this TV with a current streaming device and it punches above its age for everyday viewing, particularly if Cinema 3D movie nights are part of your entertainment mix.

Key Features

Cinema 3D - Comfortable 3D Glasses (6 Pairs Included), 3D Depth Control, 3D Sound Zooming, 2D to 3D Conversion, Dual Play Gaming (requires optional hardware), 3D Zone

Smart TV - Dual Core CPU, Magic Remote Voice, Premium Content Providers, Home Dashboard 2.0, AppStore, 3D World, Smart Share, WiDi, Skype Ready, Smart Phone Remote Support, Network File Browser & Wi-Fi Screen Share

Picture Quality - Edge LED Plus, Micro Pixel Control, Full HD 1080p, Triple XD Engine, TruMotion 240Hz & Resolution Upscaler Plus

Design - Cinema Screen and Ribbon StandSpecifications

Screen Size (Diagonal) - 54.6-inches

Specifications

Screen Size
55 inches (54.6" diagonal)
Display Technology
Edge LED-LCD
Resolution
1920×1080 (Full HD 1080p)
Refresh Rate
240Hz TruMotion
3D Technology
LG Cinema 3D (passive polarized)
Smart TV
Yes (Dual Core CPU, Home Dashboard 2.0, AppStore)
Connectivity
Built-in Wi-Fi, Ethernet (RJ-45)
HDMI Ports
4x HDMI
USB Ports
3x USB
Special Features
2D-to-3D Conversion, 3D Depth Control, 3D Sound Zooming, Magic Remote, WiDi, Skype Ready
Included
6 Pairs Cinema 3D Glasses, Magic Remote
Design
Cinema Screen, Ribbon Stand

Pros & Cons

👍 Pros

  • Six pairs of passive Cinema 3D glasses are included — a meaningful cost saving versus active shutter systems where individual glasses can cost $30–$50 each.
  • The 240Hz TruMotion refresh rate visibly reduces motion blur on sports and action content compared to 60Hz panels at the same screen size.
  • Four HDMI inputs provide enough ports for a receiver, gaming console, Blu-ray player, and streaming device without a separate switch.
  • The 54.6-inch screen diagonal delivers an immersive viewing area suited to living rooms where viewers sit 8–12 feet from the display.
  • Built-in Wi-Fi and Ethernet eliminate the need for a wired connection or separate streaming device for users who still find the native app library sufficient.

👎 Cons

  • The 2012-era Smart TV platform has lost support from most major streaming services, making the built-in smart features largely non-functional without a supplementary streaming device.
  • Passive Cinema 3D halves vertical resolution per eye — 3D image sharpness is noticeably lower than active shutter 3D systems when viewed close to the screen.
  • The 60Hz native panel relies on motion interpolation for the 240Hz TruMotion spec; aggressive settings introduce motion artifacts (the soap opera effect) on film content.
  • HDMI ports are 1.4-generation — no 4K passthrough, no eARC, and limited compatibility with modern AV receivers that expect HDMI 2.0 or 2.1.
  • At 55 inches with edge LED backlighting, local dimming performance is limited compared to full-array or OLED alternatives, resulting in blooming around bright objects on dark backgrounds.

Frequently Asked Questions

Cinema 3D uses passive polarized glasses — the same technology used in movie theaters — rather than battery-powered active shutter glasses. The result is lighter, cheaper glasses (six pairs are included) with no flicker at typical viewing distances. The trade-off is that passive 3D cuts vertical resolution roughly in half per eye, so fine 3D detail is slightly softer than active shutter systems at close viewing distances.
Not exactly. The native panel refresh is lower; LG's TruMotion 240Hz is a combination of backlight scanning and motion interpolation (frame insertion) that creates the equivalent of 240Hz smoothness. This reduces motion blur on fast-moving content like sports — but the motion interpolation can create the "soap opera effect" on film content if not tuned carefully in the settings menu.
The 55LM8600's Smart TV platform is a 2012-era LG interface with access to streaming apps available at that time. Many streaming services have dropped support for this generation of Smart TV hardware. In practice, most users pair this TV with a current-generation streaming stick (Roku, Fire TV, Apple TV) for modern app access, using the TV's HDMI inputs.
The TV includes 4 HDMI ports. These are HDMI 1.4-era ports consistent with the 2012 product generation — capable of 1080p at 60Hz and 3D signaling, but they do not support 4K, HDMI 2.0, ARC on all ports, or the higher bandwidth required by HDR formats.
The 2D-to-3D conversion on the 55LM8600 applies real-time depth estimation to standard content. Results are variable — content with clear foreground/background separation converts with decent effect, while busy scenes or fast-moving content can look artificial. It works best as a novelty feature for experimentation rather than a primary 3D viewing method.

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