Skip to content

3D Printed Speaker Passive Radiator Tool Box

Creation quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.

3D model description

A set of passive radiators for all your speaker design ideas.
I've included a few premade sizes in both circular and rectangular, and parametric Fusion 360 archives so you can roll your own. Also, STEP files.

Passive radiators function like bass reflex ports, but allow you to tune small boxes to lower frequencies by adding mass to the radiator. Getting predictable performance requires careful design and modeling. However, if you're just having fun, print one up, stick it in a box and add mass to adjust the tuning. This is an example of what can be achieved if you do it carefully:
Sound demo here:

If you like it, please hit like!

The surrounds need to be printed with a flexible filament, TPU, Ninjaflex, TPE, etc. When printing the surround, turn on "detect thin walls", and/or set extrusion width to 0.4mm.
The double membrane designs will take more weight without sagging, and have perfect symmetry in the surrounds, but using the single membrane versions will let you tune lower with less mass. When using the single membrane versions, try to keep the center of mass as close as possible to the plane of the membrane, to prevent it sagging. I use Gorilla Glue Clear to glue the surrounds on.

3D printing settings


3D printer file information

  • 3D design format: F3D, STEP, STL, and ZIP Folder details Close
    • Parametric_Passive_Radiator_-_Rectangular.f3d
    • Parametric_Passive_Radiator_-_Rectangular.step
    • Parametric_Passive_Radiator_Circular.f3d
    • Parametric_Passive_Radiator_Circular.step
    • Passive_radiator_1_v6_Passive_radiator_1_v6_Ancillary_components_1_Jig_for_glueing_Ancillary_components.stl
    • Passive_radiator_1_v6_Passive_radiator_1_v6_Hard_bits_1_Middle_Hard_bits.stl
    • Passive_radiator_1_v6_Passive_radiator_1_v6_Hard_bits_1_Middle_for_single_membrane_Hard_bits.stl
    • Passive_radiator_1_v6_Passive_radiator_1_v6_Hard_bits_1_Ring_Piece_Hard_bits.stl
    • Passive_radiator_1_v6_Passive_radiator_1_v6_surround_1_Surround_surround.stl

    Learn more about the formats

  • Publication date: 2021-04-13 at 02:29
    Published to Thingiverse on: 2021-04-12 at 04:27





Issue with this design? Report a problem

Best sellers of the category Gadget

Add a comment

Would you like to support Cults?

You like Cults and you want to help us continue the adventure independently? Please note that we are a small team of 3 people, therefore it is very simple to support us to maintain the activity and create future developments. Here are 4 solutions accessible to all:

  • ADVERTISING: Disable your AdBlock banner blocker and click on our banner ads.

  • AFFILIATION: Make your purchases online by clicking on our affiliate links here Amazon or Aliexpress.

  • DONATE: If you want, you can make a donation via PayPal here.

  • WORD OF MOUTH: Invite your friends to come, discover the platform and the magnificent 3D files shared by the community!