- Jan 14, 2020
- Stow, Ohio USA
Towards the end of last year, @amirm and I started discussing a potential audio system project that would include an open source streamer and an active speaker design. I had already been working on a DIY modular speaker concept and planned to start a design based on it, but had some other projects that needed to be completed first. This allowed me to make some adjustments to my plans and reconsider some of my original ones. Here were my goals for the speaker:
- The speaker would be active and simple to build (for me, this meant no tools beyond a circular saw but for more optimal results is more like a table saw and router).
- The design tools would be free but flexible enough to allow external data import/export.
- The design would be openly shared but FOR NON-COMMERCIAL USE ONLY.
- The cost target for the drivers and crossover would be approximately $1000 US.
- Keep the cabinet size to around 15 liters or about .5 a cubic foot or smaller (allowing it to be reasonably shipped and Amir to test). The electronics would be external. (EDIT)
- The design would allow for modest flexibility and scalability so others could (eventually) modify and add value. So, here is where Amir intervened with his ideas/goals...
- The speaker should have good directivity. Note, this did force me to reconsider some of my (mainly cabinet) plans as we'll see later.
- The speaker should use the new Purifi 6.5 woofer. As it was not in my original plans, I was hesitant due mainly to cost. However, after working on the SPK5, had them in hand and agreed to use...