A 3D projector splitter allows a single 3D source to feed multiple projectors, maintaining full 3D signal integrity for passive or dual-projector setups.

Understanding the 3D Splitter

A 3D projector splitter, such as the Gofanco PRO-HDRsplit4P, is designed to distribute a single HDMI 3D signal to multiple projectors without losing resolution or audio quality . These splitters support HDMI 1.4a or higher, ensuring compatibility with 3D formats like frame packing, side-by-side, and top-and-bottom . Some splitters also include EDID management to handle different projector capabilities and prevent signal conflicts .

Required Components

For a typical dual-projector passive 3D setup, you will need:

• 3D source device: Blu-ray 3D player, 3D camcorder, or compatible streaming device with HDMI 1.4a output .
• 3D projector splitter: Converts the 3D signal into separate left-eye and right-eye streams for each projector .
• Projectors: Two identical 2D projectors capable of receiving HDMI input.
• Polarization filters: Linear or circular polarizers mounted in front of each projector lens .
• 3D glasses: Matching the polarization type used (linear or circular) for viewers .
• Mounting hardware: Brackets or holders to secure the splitter and filters in alignment with the projectors .

Installation Steps

1. Position the Projectors: Place the projectors side by side or in a dual-projection configuration, ensuring the lenses are aligned with the screen.
2. Install Polarization Filters: Attach linear or circular polarizing filters to each projector lens. Ensure the orientation matches the left and right eye streams .
3. Connect the Splitter:
   • Connect the HDMI output from the 3D source to the splitter input.
   • Connect each splitter output to the corresponding projector HDMI input .
4. Adjust EDID Settings: Use the splitter's EDID management to match the resolution and refresh rate of both projectors, typically 1080p@60Hz for full HD 3D .
5. Align Images: Power on the projectors and adjust zoom, focus, and keystone settings to ensure the left and right images overlap perfectly on the screen.
6. Test 3D Playback: Play a 3D test pattern or movie to verify proper 3D effect and minimal crosstalk. Adjust filter orientation or projector alignment if necessary .

Tips for Optimal Performance

• Use identical projectors to avoid color or brightness mismatch.
• Silver screens are recommended for linear polarization to maintain polarization integrity .
• Check HDMI cable quality to prevent signal degradation, especially for 4K or HDR content .
• Consider a 3D demultiplexer if your source outputs side-by-side or top-and-bottom 3D formats, converting them into separate 2D streams for each projector . By following these steps, you can successfully install a 3D projector splitter for a dual-projector passive 3D system, ensuring high-quality 3D viewing with minimal crosstalk and accurate image alignment.