(sorry for my english i'm french so i use Google translate)
I just built a stereo boombox : wooden enclosure split into two separate internal chambers. Each side has a 5.25" woofer (Philips MC-50 Eastech) in about 8.3 liters net (instead of around 6L in the original mc50)
I used WinISD to figure out the tuning. I ended up with a 43mm PVC port that's 17.5cm long, rear-firing with a slight flare at the external end.
my observation:
I can barely feel any air coming out at all. I even held a piece of paper in front of the port and it barely flutters.
I've checked the cabinet for air leaks and it seems sealed tight (gaskets are good). I'm just wondering if this is typical behavior for a rear


