My previous speakers had a 21"x48" flat front panel with a rounded edge all around,
it provided a
slightly elevated response in the 300 to 500 hz region which added a little warmness to the sound.
The new design eliminated this, but kept the approximate same baffle step gain.
This drawing is a schematic only to scaled proportions and uses
3/4" Baltic Birch Plywood as cabinet
wall material. The Cabinet volume is a min.of 30 liters utilizing a bass reflex/aperiotic vent design,
after deducting for bracing and speaker volumes.
Thanks to Paul Verdone who provided the freely available interactive Excel Software, I was able to
simulate the individual driver response and baffle step gain.
Individual Driver Response and Baffle Step Gain Simulation
This is what the actual Speaker Cabinets look like