Arny Krueger wrote:

You do raise an interesting point, however, as I'm having trouble
running the numbers as to how small the hole in the ceiling can be
before it causes problems with either port noise or turning the
manifold into a reflex cabinet. Any advice on that mattter from your
own experience?

I see several approaches:

Crib details from a working design.

I'd like to, but I don't know where to look!

Forget the port and equalize

That's the most likely scenario - sealed box built into a room corner
and disguised. Mind you, if I can source Stryke AV15s in the UK, I'm
tempted to leave the alloy cones on show!

Build a scale model and then multiply by a suitable integer

Doesn't work - different Reynold's number.
--

Stewart Pinkerton | Music is Art - Audio is Engineering