Wayne Parham Messages: 18792 Registered: January 2001
Illuminati (33rd Degree)
Don't go under 6 cubic feet. Anything less generates an underdamped response curve, whether sealed or ported. Basically, if you go under 6 cubic feet or tune above 30Hz, you're going to have a big midbass peak.
The PiAlign recommendation of 6.25 cubic feet tuned to 25Hz ensures the best performance this driver is capable of in a small box. I used to make Premium Studio Series four π speakers out of them, and plans are still available if you're interested.
Wayne Parham Messages: 18792 Registered: January 2001
Illuminati (33rd Degree)
I sent to your address at iprimus.com.au. I didn't get a message saying there was something wrong with message delivery, but if you want to send me another address, I'd be happy to resend.