SpeakerGen

thingiverse

Check out this demo-video for this project at:http://nothinglabs.blogspot.com/2014/09/speakergen-parametric-3d-printed.html Build your own speaker enclosures using 3D printing technology! This OpenSCAD / Customizer script allows you to: Design a box of any desired volume, ratio, and wall thickness. Calculate optimal sealed box size for any driver using Thiele / Small parameters (Qts, Vas and Fs). Include cutouts for speaker terminals and screw holes. Create a bass port of any dimensions. With inexpensive full-range drivers available on the market - you can easily 3D print speakers that sound great! Important: If running locally - make sure to install HarlanDMii's Write.scad library: http://www.thingiverse.com/thing:16193 To build a set of speaker enclosures, follow these steps: Required parts: Speaker drivers Fasteners Polyfill from fabric store (highly recommended) Enclosure Design in 30 seconds --- Speakers Gen provides an intuitive tool that automatically calculates an optimized sealed box for your driver's parameters. You can use "Thiele/Small" parameters to help determine what kind of box will work well for your speakers. Sealed Boxes Sealed boxes are the simplest design option - primarily one variable: size. They are very flexible, with speaker drivers sounding decent in multiple enclosures sizes (e.g., 1.0 and 1.25 sealed liters). An important parameter describing a speaker / driver system is "Q." A box's Q helps dictate its F3 value, or bass frequency. Common Q values for sealed speakers fall within the range of 0.7 to 1.4. The Q of an enclosure will always be larger than that of the driver. Increasing box size lowers its Q and vice versa. Accepting a smaller Q (0.7) provides optimal low-end response but results in larger enclosures. Smaller enclosures, however, offer reduced bass output but fewer risks associated with poor design. To obtain a certain Q value and desired F3 frequency - SpeakerGen applies simple math, just like other closed box calculators:http://www.mh-audio.nl/ClosedBoxCalculator.asp Ported Boxes Ported boxes use tuned ports to enhance low-end response (aka bass reflex). Designing these enclosures is slightly more finicky due to increased potential for resonance. Using tuned ports and optimizing design elements helps reduce unwanted sound - ensuring a superior listening experience. These boxes usually result in lower F3 frequencies compared to sealed boxes, typically under 50hz. Print Tips My speaker cabinet weighs approximately 1 lb. Calculating a predicted frequency of around 60 hz when using the AuraSound NS3-193-8A speaker - it is an attractive choice due to its small footprint. Tuning bass to achieve low hz was necessary with such a compact design. Recommended settings: Infill - 20% (suitable for enclosures up to 1.75 l)