Vivitek  
Model DW3321 DH976-WT DH3331 DU978-WT DU3341 Model
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Brightness 6000 ANSI
Lumens
4800 ANSI
Lumens
5500 ANSI
Lumens
5000 ANSI
Lumens
5500 ANSI
Lumens
Brightness
Contrast
Ratio
10,000:1 15,000:1 10,000:1 15,000:1 10,000:1 Contrast
Ratio
Native
Resolution
WXGA
(1280 x 800)
1080p
(1920 x 1080)
1080p
(1920 x 1080)
WUXGA
(1920 x 1200)
WUXGA
(1920 x 1200)
Native
Resolution
Greatest
Displayable
Resolution
UXGA
(1600 x 1200)
WUXGA
(1920x1200)
WUXGA
(1920x1200)
WUXGA
(1920 x 1200)
WUXGA
(1920 x 1200)
Greatest
Displayable
Resolution
Imaging
Technology
1-Chip DLP™
System
1-Chip DLP™
System
1-Chip DLP™
System
1-Chip DLP™
System
1-Chip DLP™
System
Imaging
Technology
Digital
Keystone
Correction
± 25° (H)
± 30° (V)
± 30° (V) ± 25° (H)
± 30° (V)
± 30° (V) ± 25° (H)
± 30° (V)
Digital
Keystone
Correction
Throw Ratio 1.32–2.24:1 1.39–2.09 1.25–2.13:1 1.39–2.09 1.25–2.13:1 Throw Ratio
Video Inputs (1) Composite
(1) S-Video
(1) 5-BNC RGBHV/ Component
(1) DVI-D
(2) VGA
(1) HDMI 1.4
(1) HDMI 1.4/MHL
(1) HDBaseT
(1) Composite
(1) S-Video
(2) VGA
(2) HDMI 1.4
(1) DisplayPort
(1) Composite
(1) S-Video
(1) 5-BNC RGBHV/ Component
(1) DVI-D
(2) VGA
(1) HDMI 1.4
(1) HDMI 1.4/MHL
(1) HDBaseT
(1) Composite
(1) S-Video
(2) VGA
(2) HDMI 1.4
(1) DisplayPort
(1) Composite
(1) S-Video
(1) 5-BNC RGBHV/ Component
(1) DVI-D
(2) VGA
(1) HDMI 1.4
(1) HDMI 1.4/MHL
(1) HDBaseT
Video Inputs
Network
Connectivity
Wired Wired Wired Wired Wired Network
Connectivity
Native
Screen
Format
16:10 16:9 16:9 16:10 16:9 Native
Screen
Format
Supported
Screen
Formats
16:10, 4:3, 16:9 16:9 16:9, 4:3 16:10 16:9, 4:3 Supported
Screen
Formats
Dimensions (WxHxD) 17.5"x6.3"x12.9" 13.1"x4.5"x10" 17.5"x6.3"x12.9" 13.1"x4.5"x10" 17.5"x6.3"x12.9" Dimensions (WxHxD)
Weight 15 Lbs. 8.7 Lbs. 18.5 Lbs. 8.7 Lbs. 18.5 Lbs. Weight
Warranty 3-Year Limited Parts/Labor

1-Year Lamp
5-Year Limited Parts/Labor

1-Year Lamp
3-Year Limited Parts/Labor

1-Year Lamp
5-Year Limited Parts/Labor

1-Year Lamp
3-Year Limited Parts/Labor

1-Year Lamp
Warranty
Notes 12V Trigger

3D Audio
Surround Sound
(7W x 2)
12V Trigger

3W Speaker

Carry Case Included
12V Trigger

3D Audio
Surround Sound
(7W x 2)
12V Trigger 12V Trigger

3D Audio
Surround Sound
(7W x 2)
Notes
Links
Technical Docs
Technical Docs
Technical Docs
Technical Docs
Technical Docs
Links
Model
100x1
DW3321 DH976-WT DH3331 DU978-WT DU3341 Model
100x1