Classroom presentations and corporate meetings demand content delivery that starts quickly and works reliably across multiple input types. The LX720-4K uses laser phosphor light source to maintain consistent brightness from the first session through years of daily use, eliminating lamp replacement cycles entirely. Built-in Google TV means presenters can cast from mobile devices, stream content, or connect via HDMI without intermediate adapters or learning new interface layers. The 4K resolution and 1.3x optical zoom let rooms accommodate projector placement in realistic ceiling or shelf positions rather than requiring dedicated architectural design.
Laser Phosphor Eliminates Lamp Replacement
Traditional projector lamps fade over 4,000–6,000 hours and require frequent replacement, creating maintenance logistics and operational downtime. The LX720-4K’s laser phosphor light source operates 20,000 hours in normal mode or 30,000 in eco mode, deferring service cycles across entire educational terms or multi-year corporate deployments. Brightness remains consistent across the operating life, avoiding image dimming that forces lamp changes mid-contract.
4K Native Resolution for Professional Detail
Projecting 4K source material at full resolution eliminates downconversion loss and delivers crisper text, video, and graphics across large screens. Suitable for architectural renderings, medical imaging, design reviews, and video-based training where 1080p projection loses critical detail at 100-inch+ sizes.
Key Features
- Laser Phosphor Light Source (20,000–30,000 hour lifespan): Eliminates lamp replacement and brightness decay that defines traditional projectors. Facilities with difficult ceiling access or limited maintenance windows avoid service calls and inventory management. Operational life spans educational and corporate refresh cycles.
- Native 4K HDR Resolution (3840×2160): Delivers detail in charts, video content, and presentation graphics that standard 1080p cannot match. Justifies 4K-sourced material and video conferencing without resolution downconversion.
- 3,500 ANSI Lumens: Maintains visibility in classrooms and meeting rooms with ambient daylight or existing ceiling lighting. Does not require room blackout for acceptable image quality during daytime sessions.
- Up to 300″ Screen Size: Scales from 60″ for smaller training rooms to auditorium-scale projection. Throw distance of 1.49–9.72m (100″ at 2.49m) accommodates mid-size classrooms and large open spaces without lens replacement.
- Built-in Google TV Platform: Removes dependency on external media players or laptop connectivity for streaming, app-based content, and wireless casting. Reduces AV rack complexity and troubleshooting surface area in meeting rooms and classrooms.
- 1.3x Optical Zoom and Keystone Correction (±25° H/V + 4-corner adjustment): Projector placement becomes flexible; installers position units on shelves or ceiling mounts without precise throw-distance calculation. Keystoning corrects angled ceiling mounts or wall-mounted installations.
- 10W Cube Speaker: Provides supplemental audio without requiring separate speaker installation for modest-sized rooms. Insufficient for large auditoriums but suitable for 30–50 person training spaces and board rooms.
- 1ms Input Lag and 5GHz Wi-Fi (802.11n): Wireless casting from laptops and devices experiences minimal latency. 5GHz band reduces interference in environments with dense Wi-Fi deployments (schools, corporate campuses).
Consistent Brightness in Lit Environments
3,500 ANSI lumens sustain viewable image quality in classrooms and conference rooms without room blackout or light-blocking curtains. Daytime sessions and spaces with standard ceiling lighting remain operational without accommodation for dark conditions.
Scaling from Intimate Rooms to Large Venues
Project from 60 inches in compact training spaces to 300 inches in auditoriums using a single optical throw ratio and 1.3x zoom. The 2.49m throw distance at 100 inches fits typical classroom ceiling heights and shelf placements without custom architectural modifications.
Integrated Streaming Platform Simplifies Setup
Built-in Google TV eliminates external media players and laptop tethering for many deployment scenarios. Cast wirelessly from mobile devices, access subscription apps directly, or HDMI-input legacy sources—all without separate control surfaces or IT middleware configuration.
Flexible Positioning With Optical Zoom and Keystone
The 1.3x zoom range and ±25° horizontal/vertical keystone correction plus four-corner adjustment accommodate off-center ceiling mounts, angled table placement, and installations where ideal throw distance is difficult to achieve. Installers position the projector for structural practicality rather than optical perfection.
Onboard Audio Removes Speaker Dependency
The 10W cube speaker handles supplemental audio and announcements in 30–50 person boardrooms and classrooms without external amplifier installation. Larger venues route audio-out to venue systems via 3.5mm jack or Bluetooth connection.
Smart TV Platform Enables Wireless Mobility
1ms input lag and 5GHz Wi-Fi support responsive wireless casting from laptops, tablets, and smartphones across institutional networks. Google TV’s app ecosystem provides streaming, video conferencing, and content control without IT vetting of external devices or wired handoff delays.
Specifications
| Specification | Detail |
|---|---|
| Display Technology | 0.47″ 4K-UHD DLP Chip |
| Native Resolution | 3840×2160 (4K UHD) |
| Brightness | 3,500 ANSI Lumens (normal mode) |
| Contrast Ratio | 3,000,000:1 |
| Color Depth | 1.07 Billion Colors |
| Light Source Type | Laser Phosphor |
| Light Source Life | 20,000 hours (normal), 30,000 hours (eco mode) |
| Optical Zoom | 1.3x |
| Projection Offset | 110% ±6% |
| Throw Ratio | 1.127–1.465 |
| Image Size Range | 60″ to 300″ diagonal |
| Throw Distance (100″ image) | 2.49m |
| Keystone Correction | Horizontal ±25°, Vertical ±25°, 4-corner adjustment |
| Operating System | Built-in Google TV |
| Local Storage | 8GB total (4GB available) |
| Input Lag | 1ms |
| Supported Resolutions | VGA (640×480) to 4K (3840×2160) |
| HDTV Compatibility | 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p |
| Refresh Rate Support | 23–240Hz vertical scan |
| Audible Noise Level | 32dB (normal), 26dB (eco mode) |
| Dimensions (W×D×H) | 312×234×104mm |
| Weight | 3.5kg |
| Power Consumption | 143W (normal mode), <0.5W (standby) |
| Operating Temperature Range | 0–40°C |
| Power Supply | 100–240V AC ±10%, 50/60Hz |
Connectivity
- HDMI 2.0 (x2, HDCP 2.2): Dual HDMI inputs accommodate simultaneous laptop and streaming device connections. HDMI ARC on one input shares audio-return path for simplified room integration.
- Wi-Fi 5GHz (802.11n): Supports AirPlay, Miracast, and Chromecast for wireless device casting. 5GHz band prioritises stability in crowded institutional networks.
- USB Type-A (Power, 5V/1.5A): Charges small devices; does not support external storage or direct file transfer.
- USB Type-A (Services): Diagnostic and firmware update port; not for end-user connectivity.
- Audio Output (3.5mm jack): Stereo line-out for routing to external amplifiers or active speakers in large venues.
- Bluetooth 5.0 Audio Output: Wireless speaker pairing for supplemental audio or backup connectivity.
- RS-232 Serial Control (DB-9 male): Integration with AV control systems, scheduling software, and automated room management platforms.
Warranty
This ViewSonic product is covered by a 3-year warranty against manufacturing defects. Contact Kickstart Computers for warranty claims and support.
