I will get going shortly on my ported (16-17 Hz) Tempest X project
as the offspring are finally clearing their stuff out of the garage
Looking at
internal dimensions 22.5" H x 24" D x 47.5" W using 3/4 MDF
(the box shape is fixed as it fits in a specific space)
Planning on double thickness MDF on ends of sub and 3 internal "window pane" braces also 3/4 MDF
Planning on using 8" sono port around 30-32" in length
Planning on putting the driver centered on one end and the port centred on the other end (this leaves about 9" from the back of the Tempest X to the port opening)
When calculating volume of the port, I get 100 liters!

Is the port figured as "solid" or does one take the outer diameter minus the internal diameter to claculate volume

At what spacing should the 8" sono port be supported?
Is attaching it to bracing with wood glue OK? Need to wrap it with anything?
Might I be better to rethink and centre the driver on the length of the box and direct the port out one of the sides?
I appreciate the help given in the past--I guess I am a bit of a "Nervous Nellie" with respect to getting going, but I guess I am trying to get it as correct as possible my first time out.
Of course that is why I am asking questions of the great folk on this forum
