Looking to elevate your home theater or build speakers? Explore our Speaker Designs to transform your sound!
As bolt-on to screw-on horn adapters become increasingly scarce and inconsistent in quality, we’ve modeled one and are offering a free 3D-printable version to fill the gap.
This adapter allows you to mate standard 2- or 3-bolt compression drivers (e.g., B&C, FaitalPro, etc.) to horns with a 1-3/8″-18 TPI internal thread. It’s especially useful for prototyping, retrofitting, reusing existing horns in DIY Speaker Builds.
Key features:
- Supports both 2- and 3-bolt patterns
- Standard 1-3/8″-18 TPI male thread
- Thick-wall design for durability
- No supports required for FDM printing
- Tested in PETG and ABS; PLA may work for low-SPL/ low heat applications
📁 Download the Files :
- Includes .stl, .3mf,.step, .sldprt
Print Settings
- Layer height: .08mm or as small as you can get it
- Walls: 4
- Infill Type: Adaptive Cubic
- Infill Percentage: 50%
Let us know if you remix or modify it for other formats—happy building!
Hole Pattern:
Looking to elevate your home theater or build speakers? Explore our Speaker Designs to transform your sound!
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