Portable USB Speaker Enclosure For Tectonic TEBM36S12-4A

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The main enclosure is present within the files, yet fails to appear in the preview for some unknown reason, likely due to a file size issue exceeding 1 megabyte. This portable USB-powered speaker was designed specifically for use with my tablet. The frequency response of the F3 is approximately 200 Hz, and usable bass can be extended to significantly lower frequencies with some equalization adjustments at the cost of maximum volume. Key objectives of this design include: * Creating a device that utilizes the Tectonic TEBM36S12-4A Balanced-Mode Radiator drivers for optimal performance * Ensuring the speaker is compact enough to fit within my tablet sling bag and onto my print bed * Achieving moderate volume playback with reasonable frequency coverage * Powering the speaker from my USB power bank, thereby eliminating the need to track separate battery levels Components utilized: 2 Tectonic TEBM36S12-4A BMR drivers (purchased from parts-express.com) 1 Drok PAM8406 Audio Amplifier Board (Amazon ASIN B077MKQJW2) 1 Micro USB panel mount (retrieved from parts bin) 1 3.5mm headphone jack panel mount (retrieved from parts bin) 12 M3x6mm button head screws 8 M3x8mm button head screws 15 cotton balls or poly-fill Assembly notes: To facilitate a proper fit, I employed a Dremel to modify the USB panel jack. Additionally, I inserted some lightly fluffed up cotton balls into the speaker enclosure to minimize reflections and increase the effective enclosure volume. A small amount of clear gel school glue was applied to the speaker mount faces and around the back plate seal to prevent air leaks.