终极书架扬声器 3寸

Ultimate Bookshelf Speaker - 3"

2023-08-27 05:36:28

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Summary

This is it... my most developed box design. While it might look boring compared to some of the other designs involving transmission lines, folded ports, or horn elements, I dare you to compare the sound quality to any of those. The combination of this box and the Dayton Audio PC83-4 speaker results in magic.

12/20/23 - Changed the Filleted face sides to a simple chamfer, this should make it easier to get a clean print. I also got rid of the cheap plastic terminals and replaced the box with holes for Binding Post style terminals. Those cheap plastic inserts are just garbage and dont make a good seal. These are the terminals I used. https://www.amazon.com/gp/product/B01GBOGJ44/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

9/18/23 - Added a new front plate that has replaceable ports! Printing threads can be tricky due to how well your printer is dialed in. The size and pitch of the threads is 1.45"-10

This enclosure is designed specifically for Dayton Audio 3" PC83-4 speaker. This is the 4 ohm version. These are very affordable on Amazon and I highly recommend this build as these cheap 3" speakers in this cabinet are truly amazing. The range this design has, including the bass, is something that has to be heard to be believed. Dayton provides all of the T/S specs for their speaker and it goes to show what an optimal cabinet design can do. Do not use this box with the 8-ohm version of the speaker. The specs for that speaker are totally different and requires a different box volume.

Many of the speaker cabinet designs on Thingiverse look really cool but don't take into consideration the Thiele Small parameters (the speaker specs) of a speaker. When you pair those designs with whatever random speaker you're using, they tend to sound pretty terrible. The design of this classic ported box was totally dictated by the PC83-4 speaker and will thus outperform things randomly thrown together.

I have included two variations of the port. Short and long. They are tuned for 60 and 50hz respectively. The 60hz one is more in the usable range of the speaker and most songs don't really go far below that. I recommend you use that one. If you want to try to get a little more bass extension you can try the 50hz one. Below that, the speaker really starts to drop off.

-3dB Cutoff Frequency: 52.45Hz

If you build these, I'm excited to hear back from you on how they are. Please let me know!

Ingredients (per speaker):
Dayton Audio PC83-4
2x Binding Post Terminals
Speaker wire
4x screws to hold the speaker in - I use #8 1" long sheet metal screws.
Glue - I have been using clear Gorilla glue.
Adhesive rubber feet
You will need an amp to run these. I recommend any of the quality Blueooth amps on Amazon. My favorite amp so far is the Arylic B50 SE which has pre-outs for a sub and a remote.

Use these Post terminals:
https://www.amazon.com/gp/product/B01GBOGJ44/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Print Settings

Printer brand:
Anycubic
Printer:
Vyper
Rafts:
No
Supports:
No
Resolution:
Any
Infill:
20% 3D Honycomb or 25% Gyroid
Filament brand:
JAREES
Filament material:
PETG
Notes:
I have been using PETG for these, but I think anything will work. My totally untested theory is that PETG is more dense and softer than PLA which may help with the sound quality.

Get your big nozzle out for this. This is a large print and takes a long time even with my .8mm nozzle.
I printed this with the following settings:
.8mm nozzle
2 vertical walls
3 horizonal walls (tops and bottoms)
.5 layer height.
20% 3d honeycomb or 25% gyroid infill.