What happens after checkout
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Step 1
Receive your files
Your digital files are emailed after checkout. Read the guides before starting your build.
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Step 2
Source, print and build
Buy the listed parts, print the files and follow the assembly guide.
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Step 3
Enjoy the result
Sit back and listen to the speakers you built yourself.
THE DIGITAL PLAN
The plans. Your printer. Your build.
Buy the digital design once, then source the components and build at your own pace.
What you get
3D-printable speaker files, build documentation and parts information for this design.
Your digital files are emailed after checkout.
What you supply
A suitable 3D printer, filament, tools and the physical components listed in the project guides.
The plan price does not include physical parts or an assembled speaker.
Project facts at a glance
Specifications from the published project guides. Finished cabinet dimensions differ from the printer volume needed for the individual parts. Keep the full guides handy for measurements, parts quantities and assembly details.
- Drivers
- 2 × Dayton TCP115-8 woofers
- Finished dimensions (H × D × W)
- 311 × 250 × 200 mm
- Minimum printer volume
- W 200 × D 250 × H 250 mm
- Published frequency response (−3 dB)
- 37–120 Hz
- Amplification
- Lepai LP210PA 2.1 plate amplifier; sourced separately
- PLA filament
- ~2,700 g per subwoofer
- Assembly time
- 1 afternoon / pair (excl. printing)
- Difficulty
- Easy
- Digital files
- STL print files, assembly guide, parts sourcing guide and spec sheet.
- Parts sourcing
- Buy the listed drivers, crossover components where required, hardware and materials separately. Physical parts are not included.
Explore the project
The speaker you’ll build, its requirements and the original project guides.
Newer version available: Take a look at the Subsonic Mk3 digital plans. The plans on this page are for the Subsonic Mk2.
The perfect partner for your Supersonic desktop speakers, the Subsonic brings deep, rich bass to your setup—ideal for music, gaming, or movies. Its compact design fits seamlessly under desks or in small home theatres, delivering sound that packs a punch.
Onboard Stereo 2.1 Amplifier
This powerhouse plate amp drives the subwoofer and powers your stereo speakers, including the Supersonic. One box, exceptional sound—no extra gear needed.
Feel the Bass
Equipped with dual 4-inch high-excursion drivers, the Subsonic delivers tight, powerful bass you can feel, whether you’re jamming to tunes, watching a movie, or gaming.
Compact Design, Huge Performance
Measuring 311x250x200mm, it’s small enough to tuck away but packs a serious punch with room-shaking bass that defies its size.
Print and Customize Your Look
With endless 3D printer filament options, you can 3D print the Subsonic to match your style. Blend it into your setup, or make it a standout feature.
Easy to Build, Easy to Enjoy
Our step-by-step guides and printable files make assembly a breeze. Follow the steps, print the parts, and you'll have a custom-built subwoofer in no time!
Ready to add some serious bass to your setup? Start your 3D printed speaker journey with the Subsonic today!
Major Changes with Mk2:
1. Prints with no slicer-generated supports
2. Reduced from four enclosure sections to two
3. Offers more reliable printing
4. No external scarring from built-in supports
5. 15% larger internal enclosure volume for deeper bass
6. Updated design language to better match the Supersonic
7. Filament requirement reduced from 3600 g to 2700 g
8. Improved comfort as an under-desk footrest :)
Filament required per subwoofer: 2700g
Minimum printer build volume: H250xD250xW200mm
A few things to know
How do I receive the plans?
Your digital files are emailed after checkout. Download the files and read the project guides before starting your build.
Are any physical parts included?
No. This is a digital plan. You source the components, filament and hardware separately, then print and assemble the speaker yourself.
Will this work with my printer and parts?
Check the printer build volume and component list for this specific project. Requirements vary between designs, so confirm that your printer fits the parts and that you can source the listed components before buying.