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Mobile Audio Subwoofer Parametric

Mobile Audio Subwoofer Parametric

  • Subwoofer-box-with-speaker-assembly-done-3500-3500

    Subwoofer box with speaker assembly done.png

    2919.0KB

    2017/03/07

  • 12-inch-woofer-from-vendor-v15-3500-3500

    12 INCH WOOFER FROM VENDOR v15.png

    2180.0KB

    2017/03/07

  • New_woofer_thursday

    new_woofer_thursday.png

    1283.0KB

    2014/11/06

  • Acrylic_box

    acrylic_box.png

    1277.0KB

    2014/11/06

  • Woofer_with_wires

    Woofer_with_wires.png

    693.0KB

    2014/02/25

  • Triple_subwoofer_box

    triple_subwoofer_box.png

    510.0KB

    2014/02/20

  • Subwoofer_side_view

    Subwoofer_side_view.png

    387.0KB

    2014/02/14

  • Woofers_workflow

    Woofers_Workflow.jpg

    39.0KB

    2014/02/13

  • Box_parameters

    Box_Parameters.png

    477.0KB

    2014/02/13

  • Screen_shot_2014-02-20_at_11.30.03_am

    Screen_Shot_2014-02-20_at_11.30.03_AM.png

    292.0KB

    2014/02/20

  • 3dmodelthumbtraninprogress80x80
Description

Objective: Create a parametrically configurable subwoofer enclosure.

Background: Subwoofer speaker enclosures are designed specifically to match the subwoofer speaker. The speaker designer will publish specs that include a few basic metrics. Customers will design and build their own boxes, or third party manufacturers will make boxes for popular speaker models. For many reasons, speaker manufacturers do not generally provide the boxes for their subwoofer speakers.

Key metrics include:

Volume (the air inside the box). Most important. This is the 'air spring' behind the speaker as it moves while playing bass. This is the single most important parameter in a subwoofer enclosure design.

Woofer and terminal cup made in Inventor and imported.

Screws are from McMaster-Carr.

Comments
X120

good job!

about 1 year ago
X120

I think PASSIVE RADIATORS could be more useful...BTW nice model

over 1 year ago
X120

Added a couple new shots. I revisited this design for some recent workflow testing for Sculpt and Sketch Spline. New logo, new year, more bass.

over 1 year ago
X120

Bross, I appreciate your obvious knowledge of the subject matter, but I have to politely disagree as someone who has designed and sold this equipment for over a decade*, a ported enclosure is what people use when they want "more bass". Just ask anyone with a ported enclosure! I personally do not like it for the reasons you state, but ported makes the car shake more, period. That's all people want sometimes.
Thanks,
Phil

*Phoenix Gold 1999-2011

over 1 year ago
User_x176

porting doesn't add more bass,
A Sealed subwoofer separates the negative and the positive frequencies, so you only hear the positive.
A ported subwoofer allows a hole so that the negative reinforce the positives. A ported subwoofer can be louder using the same electrical power, but only at the lower HZ range like 20-50hz. However you will need a a larger box and you will also sacrifice bass accuracy.

Nice design though.

over 2 years ago
X176

Awesome job...

about 4 years ago
X120

And the new one is *ported* for MORE BASS [evil grin].

about 4 years ago
X120

Added a couple new pix. The grey box with the orange speaker is the fresh result of testing the next update. You can really see how rendering and materials have improved greatly. And yes, this box is fully parametric. Anyone who makes configurable designs such as cabinets, or in this case a speaker cabinet, would benefit from this workflow.

The box itself is a stand alone component. I insert it into new designs, then tweak the parameters. The original is never consumed, the fresh designs take advantage of the cabinet parameters. Rework is eliminated, for the most part. Perfect solution for the custom cabinet maker!

about 4 years ago
X176

great feautures (level up)

over 4 years ago
X120

Video here: http://forums.autodesk.com/t5/Design-Differently/Testing-parameters-in-Fusion-360-dev-build/ba-p/4801983

over 4 years ago
X120

Added a new image showing a triple box. Also added the parameters table used.
In this case the number of speakers parameter drives most of it, along with width per speaker and volume per speaker.

over 4 years ago
X120

Workflow:
Create the enclosure volume first. All the driving parameters are made to drive volume.
Width and height can vary, and desired volume drives depth.
Shell the volume outwards to create the cabinet body.
Split the body into various panels.
Add a hole feature for woofer and another for the terminal cup.
[KEY] Make a work axis based on each hole.
Woofer hole is based on center of face, terminal cup hole is based on sketch.
Import speaker and cup. Use rigid joints to place in respective holes.
Import screw and place in cup flange hole with rigid joint.
Copy and paste another screw and joint to a woofer mounting flange hole.
Circular patterns for the screws, [KEY] use the work axis created with the hole edge in previous step.

I have found in this workflow it's a good idea to check your parameters at every major step to ensure things update as needed. Flex the model often.

almost 5 years ago
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X120
Phil Eichmiller
Oregon, United States of America
OPEN/DOWNLOAD THE MODEL

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