Posted by Wayne Parham on September 13, 2003 at 06:59:32

In Reply to: Re: SP12 speaker data posted by mism on September 13, 2003 at 06:14:40:

I entered the values into PiAlign, using data from the table at your link.

Vad = Vas = 167.1L = 5.9ft³
Frd = Fs = 45Hz
Qd = 1/Qts = 1/0.67 = 1.5

PiAlign recommends a 4ft³ cabinet tuned to 25Hz using a 2" diameter port that's 1.5" long. Response is nice, with a gentle 2dB lift from 70hz to 200Hz and -3dB point of 50Hz. Usable response down to 35Hz, at -10dB.