ViewSonic PX748-4K – 4000-Lumen 4K UHD Home Projector - Discontinued

Product Overview

The ViewSonic PX748-4K is a 4,000 ANSI lumen 4K UHD home and office projector designed for users who need true 4K resolution in a moderately lit room without the operating costs of a lamp-based unit. At this brightness level, the PX748-4K handles living rooms and home theater environments with controlled ambient light, as well as small conference rooms and presentation spaces that require 4K source compatibility. The 4,000-lumen output provides enough headroom to remain usable when some ambient light is present.

Product Description

The PX748-4K delivers 4K UHD (3840x2160) resolution with 4,000 ANSI lumens in a unit positioned between entry-level home theater projectors and commercial installation models. The 4K resolution is native, providing the full benefit of 4K source content from streaming services, UHD Blu-ray, and high-resolution gaming or presentation sources. At 4,000 lumens, it maintains a visible, color-accurate image in partially lit environments without requiring full blackout conditions.

This projector is well-suited for executive conference rooms, small boardrooms, and home office setups where image quality at large screen sizes matters and the source library includes 4K content. It is also a practical choice for residential home theaters in rooms with ambient light control. The combination of 4K resolution and 4,000 lumens provides meaningful image quality at screen sizes where 1080p resolution becomes visibly less sharp at close viewing distances.

Key Features

• 4,000 ANSI Lumens — Maintains usable brightness in rooms with partial ambient light.
• 4K UHD Resolution (3840x2160) — True 4K for high-resolution source content from streaming, UHD Blu-ray, and 4K computing sources.
• Home and Office Use — Appropriate for home theaters, executive conference rooms, and small boardrooms requiring 4K output.
• Large Screen Capability — Fills large screens with sharper detail than 1080p models at close viewing distances.

Typical Applications

• Boardroom
• Conference room
• Auditorium

Frequently Asked Questions

Is the PX748-4K a true 4K projector?

Yes. The PX748-4K outputs native 4K UHD (3840x2160) resolution, providing the full benefit of 4K source content without pixel-shifting approximation.

Will the PX748-4K work in a room with the lights on?

At 4,000 ANSI lumens, the PX748-4K handles rooms with partial ambient lighting. A fully lit conference room or classroom with bright overhead fluorescents will reduce perceived contrast and color saturation. For fully lit commercial spaces, the LSD500HD or LSD600W at 5,500–6,000 lumens are more appropriate.

What type of content benefits most from 4K resolution on a projector?

4K resolution is most noticeable at large screen sizes and short viewing distances. On screens 120 inches and larger, 4K delivers noticeably sharper detail than 1080p for viewers seated relatively close to the screen. High-resolution streaming, UHD Blu-ray, and 4K presentation graphics are the primary use cases.

Is the PX748-4K suitable for a conference room?

It is suited for smaller, controlled-light conference rooms and boardrooms where 4K source content is used. For large, fully lit conference spaces, a higher-lumen commercial laser installation projector is more appropriate.

Does the PX748-4K require lamp replacements?

Please refer to the product documentation for light source type and replacement schedule. Contact our team for confirmation on maintenance requirements for your specific deployment scenario.

Replacement Product: PX749-4K