Projectors

Runco Q750i DLP Projector with LED Illumination

ARTICLE INDEX

Introduction

Since the first LCD units were pressed into service as home theater displays, digital projection has suffered from one limitation, the bulb. No matter the technology – DLP, LCoS or LCD – all digital front projectors use either a UHP (Ultra High Pressure) mercury or xenon lamp as a light source. This presents several obstacles. First, the lamp has to be replaced every so often. It can last as much as 4000 hours but sometimes it’s as little as 1000. Secondly, the lamp shifts color and dims as it ages. In fact, I will usually replace mine at 1000 hours regardless of the rating due to the lowered light output. The color shift also requires re-calibration at regular intervals. I always recommend adjustments at 100, 400 and 800 hours to maintain the most accurate image. Third, lamps run hot requiring a constant-running cooling fan to keep the projector from overheating. There must be a better way.

Specifications

  • Design: Single-Chip DLP Projector with LED Light Source
  • Native Resolution: 1,920 x 1,080 at 48, 50, or 60 Hz Refresh Rate
  • Light Output: 700 Lumens, 29 Foot-Lamberts
  • Anamorphic Lens Support
  • Throw Ratio: 1.17-2.40 Depending on Lens (6 Available)
  • Lens Shift: Vertical ± 60%, Horizontal ± 12.5%
  • Inputs: Two HDMI 1.3, Two Component, One S-Video, One Composite, 1 PC (D-Sub)
  • Control: RS-232, 2-12v Trigger, IR input
  • Rated LED Life: 50,000 Hours
  • Dimensions: 10.2" H x 20.9" W x 22.5" D
  • Weight: 49.4 Pounds
  • MSRP: $14,995 USA
  • Runco

Enter the Light Emitting Diode. At last year’s CEDIA Expo, LED projection was THE hot new technology for high-end theaters. The promise of a product with a 50,000 hour lamp life is one of the most significant advances in front-projection since the invention of the DLP chip. With LED technology, projectors can now be used as the primary display. There’s no waiting for warmup or worrying about power on/off cycles and its lifespan is equal to a flat panel TV. Not only that, the light level and color will remain stable for the life of the product. Is there a catch? Read on as we explore this potentially revolutionary technology.