ViewSonic PX748-4K
| Brand | ViewSonic · PX Series |
| Type | Gaming |
| Status | Discontinued |
| Released | May 2021 |
| Resolution | 4K UHD |
| HDR formats | HDR10, HLG |
| Imaging technology | DLP |
| Light source | Lamp |
| Brightness | 4,000 lm ANSI |
| Throw ratio | 1.13–1.47:1 |
| Input lag | 1080p: 240 Hz 4.2 ms |
A lamp-based single-chip DLP projector that makes 3840x2160 images with TI XPR pixel shifting, rated at 4,000 ANSI lumens. It has a 1.3x manual zoom, two HDMI 2.0 inputs, USB-C, Ethernet and a 12 V trigger, with a 1080p mode rated at 240 Hz and 4.2 ms input lag, aimed at gaming and bright-room home use.
Data sheet
Picture
| White light output | 4,000 lm ANSI | |
| Imaging technology | DLP | |
| Native aspect | 16:9Derived | |
| Addressable resolution | 4K UHD (3840 × 2160) | |
| Dynamic contrast | 12,000:1 | |
| Colour bit depth (per channel) | 10 bit | |
| HDR formats | HDR10, HLG | |
| Picture mode memories | 2 |
Light source
| Light source | Lamp | |
| Lamp power | 240 W | |
| Replacement lamp | RLC-127 | |
| Light-source life | 4,000 h normal · 20,000 h dynamic |
Optics
| Throw ratio | 1.13–1.47:1100″ · 2.50–3.25 m | |
| Image size | 30–300 in | |
| Zoom | Optical | |
| Zoom ratio | 1.3×Derived | |
| Focus | Manual | |
| Vertical keystone | 40° | |
| Horizontal keystone | 40° | |
| Auto keystone | Yes | |
| Corner correction | 4-corner | |
| Grid warp | Yes | |
| Interchangeable lens | No |
Motion & gaming
| Max input refresh | 1080p: 240 Hz · 4K UHD: 60 Hz | |
| Input lag | 1080p: 240 Hz 4.2 ms |
Inputs & control
| HDMI inputs | 2 × HDMI 2.0 (HDCP 2.2) | |
| Max input resolution | 4K UHD | |
| Control ports | RS-232, 12 V trigger |
Smart platform
| Ethernet | Yes |
Audio
| Speaker power | 10 W | |
| Speakers | 1 | |
| Layout | Mono | |
| Audio outputs | 3.5 mm | |
| HDMI audio return | NoneDerived |
Physical & installation
| Dimensions (W × D × H) | 312 × 222 × 108 mm | |
| Weight | 2,800 g | |
| Orientations | Table, Ceiling, Rear | |
| Ceiling mount | M4, screws ≤ 8 mm |
Environment & power
| Operating temperature | 0–40°C | |
| Operating humidity | 0–90%RH | |
| Altitude | 3,000 m · high-altitude mode | |
| Power draw | 310 W | |
| Standby | Up to 0.5 W | |
| Mains input | 100–240 V · 50/60 Hz | |
| Fan noise | Normal 33 dB(A) · Eco 28 dB(A) |
Safety & support
| Risk group | RG2 | |
| Marks | FCC | |
| Warranty | 🇺🇸 US 3 yr (light source 1 yr) | |
| User manual | viewsonicglobal.com |
In the box
| In the box | Power cord, Remote, Quick start guide, USB cable | |
| Remote | IR |
Similar models
| Model | Resolution | Tech | Lumens | Price | |
|---|---|---|---|---|---|
Optoma GT3900UHD 4K UHD · DLP | 4K UHD | DLP | 4,000 | $1,499 +$400 | Compare |
Optoma UHD38x 4K UHD · DLP | 4K UHD | DLP | 4,000 | $999 −$100 | Compare |
ViewSonic PX749-4K 4K UHD · DLP | 4K UHD | DLP | 4,000 | $1,180 +$81 | Compare |
Optoma GT1090HDR 1080p · DLP | 1080p | DLP | 4,200 +200 | $1,470 +$371 | Compare |
Optoma GT1080HDR 1080p · DLP | 1080p | DLP | 3,800 −200 | $799 −$300 | Compare |
Optoma GT2100HDR 1080p · DLP | 1080p | DLP | 4,200* +200 | — | Compare |
Other
Tools
- Throw calculator — How far from the screen the PX748-4K needs to sit for a given image size, set to its 1.13–1.47:1 lens.
- Download spec as CSV — Every value on this data sheet with its unit and source, one row per spec.
- Download spec as JSON — The same data from the open data API, with variants and identifiers.
Variants & identifiers
Use these to confirm a listing is this exact model. Any of them works at /p/{code}.
| Variant | Region | Type | Code |
|---|---|---|---|
| Standard | 🇺🇸 US | UPC | 766907008951 |
| MPN | PX748-4K |