"Mechano22" - new version of a small 2-way speakers, with linear on-axis and power response characteristics.
Not so long ago, I made a small 2-way speaker design with the following goals: f6 around 40Hz with 8 liters BR 45Hz enclosure, generally balanced on-axis response and close to linear frequency power response. Experience gathered with that design led me to a conclusion that maybe it could be done a better and cheaper. And here is the new version, codemame "Mechano22". It is based on relatively inexpensive set from Dayton: ND25FW-4 tweeter with waveguide and DSA135-8 midwoofer. The box is really simple: rectangular 18mm birch plywood panels assembled (glued) with overlaps. Box dimensions: HxWxD: 290x174x263mm. The Box is filled with polyester fiber. Pic 1. Box dimensions (mm) The woofer has a flat basket edge, which, according to the manufacturer's note, allows application without flush so it wasn't implemented but there is a chamfer on the inner side of the mounting hole. Pic2. System on-axis and power response characteristics in comparison with target lines. For