John came up with this form factor for my space reqs to line up Jbl4722s long back and time has come to execute the build
Driver : UM18-22
18D Sub in LTD02 words:
This cab works out to about 8.1 c.f. before driver and bracing, so about 7.6 c.f. net after everything. Port is 44" long, 2.5" tall, 21" effective width. Effective length is about 46.5" and then there is about a Hz of further adjustment required for this style of cab, so tuning should come in around 18.3Hz +/-.
If you will be standing the cab in the vertical position, you may want to lower the driver a bit for slightly better resistance to vibration.
Bracing is up to you of course, but make sure that it is rock solid.
Port velocity and first port resonance will be fine.
If you had something else in mind, we can modify the cab no problem. Just let me know what you would like.
Cut List (for single Baffle).
sides 18 x 48 (2)
top 18 x 16.5 (2)
Back 16.5 x 46.5 (1)
Port 16.5 x 26 (1) Back
Port 16.5 x 14.75 (1) Bottom
Baffle 16.5 x 43.23 (1)
Port Rail 2.5 x 17.25 (2)
Port Rail 2.5 x 46 (2)