The other sheet, filled out by hand, from Pyle, lists suggested box sizes, sometimes both ported and sealed are give. Also suggested LxWxD. Port sizes are given. These are sort of cookbook style practical size boxes.

I found Pyle, at that time, very good about sending response graphs and any other data I asked for. Also answering application questions.

While much of their line does not meet my needs (mostly car stereo now) their pro audio line of PYMxxxx series of woofers are excellent, economical woofers. About the same bang for the buck as the Eminence woofers. But I find the Pyles many times yield good performance in better sized boxes than most of the Eminence woofers. Perhaps I put too much stress on box sizes I can move around (portable PA gear).