Optoma X309ST 3D DLP Short Throw Desktop Projector with 3700 ANSI Lumens and XGA Resolution

Optoma X309ST Short Throw Desktop Projector

The Optoma X309ST is a compact, high‑brightness DLP projector designed for short‑throw applications. With a native XGA (1024×768) resolution and an impressive 3700 ANSI lumens, it delivers sharp, vivid images even in well‑lit rooms. Its 3D capability, integrated 10 W speaker, and versatile connectivity make it ideal for business presentations, educational settings, and home entertainment.

Key Technical Highlights

• Brightness: 3700 ANSI lumens – sufficient for bright conference rooms or classrooms.
• Resolution: Native XGA (1024×768), supporting 640×480 graphics and up to full‑HD video via HDMI.
• Contrast Ratio: 25,000:1 for deep blacks and detailed shadows.
• Short‑Throw Lens: Fixed focal length of 7.15 mm, projection ratio 0.617:1 (6.17:10), allowing a 31.9″ image from just 0.4 m away.
• 3D Support: Full‑HD 3D with compatible glasses; formats include side‑by‑side, top‑and‑bottom, and frame‑packing.
• Lamp Life: Up to 6000 h in standard mode, extending to 12,000 h in dynamic mode.
• Power Consumption: 225 W during operation; 0.5 W standby.
• Audio: Built‑in mono speaker (10 W) with 26 dB noise level.
• Connectivity: 1 HDMI, 2 VGA, component and composite video inputs, USB‑A, RS‑232, and a Kensington lock slot for security.
• Dimensions & Weight: 31.6 cm × 24.4 cm × 10.8 cm; weighs 3 kg.

Short‑Throw Performance

The X309ST’s short‑throw design is engineered for tight spaces. Its 0.617:1 projection ratio means a 31.9″ image can be projected from as close as 0.4 m (15.7″), expanding to a maximum of 3.1 m (122″). This flexibility allows placement on desks, walls, or ceilings without sacrificing image size.

Image Quality & Color Accuracy

Powered by Optoma’s DLP technology, the projector delivers crisp detail and accurate colors. The 25,000:1 contrast ratio ensures deep blacks, while the 75 % uniformity guarantees consistent brightness across the screen. The lens offers vertical distortion correction of -40 / +40°, maintaining a flat image even when mounted at angles.

Versatile Connectivity Options

The X309ST supports a wide range of input sources:

• HDMI 1.4a – full‑HD video and audio, including 1080p60/50.
• VGA (2 ports) – ideal for legacy PCs and laptops.
• Component & Composite Video – compatibility with older AV equipment.
• USB‑A – for firmware updates or media playback via compatible devices.
• RS‑232 – serial control for integration into larger AV systems.

The inclusion of a Kensington lock slot adds security, preventing accidental movement during presentations.

Audio Features

A single 10 W speaker delivers clear mono sound. While not designed for high‑end audio production, it is adequate for voice‑over presentations, video playback, and casual movie viewing. The 26 dB noise level ensures minimal background hiss.

Energy Efficiency & Lamp Longevity

The projector’s power consumption of 225 W during use is balanced by a low standby draw of 0.5 W, making it energy‑efficient for continuous operation. The lamp’s lifespan varies with mode: 6000 h (standard), 12,000 h (dynamic), 10,000 h (economy), and up to 15,000 h (Eco+). This flexibility allows users to choose between brightness and longevity based on their needs.

Operating Conditions

• Temperature: 5 °C – 40 °C.
• Humidity: 0 % – 85 % (non‑condensing).
• Voltage: 100–240 V, 50/60 Hz.

Ideal Use Cases

• Business & Education: Compact size and short‑throw capability make it perfect for boardrooms, classrooms, and training rooms.
• Home Theater: 3D support and high brightness allow immersive movie experiences in living rooms.
• Portable Presentations: Lightweight design (3 kg) and built‑in speaker enable on‑the‑go presentations without external audio equipment.

Summary

The Optoma X309ST combines high brightness, sharp XGA resolution, and short‑throw versatility in a compact package. Its robust connectivity, 3D capability, and energy‑efficient lamp make it a standout choice for professionals seeking reliable, high‑quality projection without the bulk of larger models.

Frequently Asked Questions

• Can I use the projector in a dark room? Yes; its 3700 lumens provide excellent contrast even in low‑light environments.
• Is the 3D feature compatible with all glasses? Only Optoma or certified 3D glasses are supported for optimal performance.
• What is the recommended screen size at 1 m distance? Approximately 40–45″, given the short‑throw ratio.

With its blend of power, portability, and advanced features, the Optoma X309ST stands out as a versatile solution for any setting that demands high‑quality projection in a compact form factor.