Pensils for Alpair 10.3 & Alpair 10p

Not influenced by that. The driver height is a function of cabinet length. And the cabinet length is a function of driver requirements and the target alignment. But yes, it does mean that people do have a greater driver height as a side-benefit, which is nice.
 
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Actually from the 10p graph no I don't think the driver has any BSC built in, unlike the 10.3 metal which does. Maybe Mark can chime in on that if I'm mistaken.


you could be right - it wouldn't be the first time I read the wrong graph, or otherwise put my foot in my mouth (interestingly enough the only thing I'm that flexible enough these days to do)
 
I wondered if you clever blokes have advice on vent vs port with a pensil design. It seems to my lay understanding, that if the port (without tube) has the same surface area as the vent, performance will be essentially unaltered.

So a port hole with a diameter a little over 5cm would provide the same function?

I ask because I would like an easy option to having the entire front face one piece. And a hole is a simpler task to keep looking tight.

Thanks to all on these threads for the constant supply of information and inspiration.

Special thanks to Mark and Scott - hope my question didn't put any noses out of joint 🙂
 
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Radius a little over 5cm. It's been a few year since I need to consider pie.


so that'd be approx 10cm diameter, area approx 78.5cm^2

and while my wife is trying to keep me off the wasted carbs, I always like to consider a nice pie, or New York cheesecake 🙄

we'll leave it to Scott to advise if the high aspect ratio slot port/terminus is an integral factor in the Pensil architecture
 
Providing the vent CSA is held per that of the stock box, and it's positioned as close to the bottom as physically possible, you should be fine with a circular. The aspect ratio of the vents in the pensil alignments (well, the ones published at any rate) is not sufficient to cause a significant functional change in performance; it isn't until we get to more extreme variations that it would start to become more critical.