--Driver Parameters--

Fs = 45, Hz

Qms = 7,517

Vas = 188, liters

Xmax = 2, mm

Sd = 850, sq.cm

Qes = 0,419

Re = 5,61 ohms

Le = 0,88 mH

Z = 8, ohms

Pe = 250, watts

Qts (calculated) ~ 0,398

Sensitivity (read in WinISD) ~98db/1w/1m

I'm looking for a sub/low-end for parties (and maybe festivals at some point) to accompany a pair of old 15-inches, which don't go very low at all. It is mainly to be used outside.

Coupe of questions:

1. Is this unit even meant for PA, or is it for a guitar amplifier? What consequences would this have?

2. Since it's already in a box, how important is the volume, if the port(s) are tuned to the right frequency?

3. Irrelevant question: Which frequency is the bass that kicks you in the stomach at night clubs and so on?

EDIT: 4. Does anybody know this unit? Is there anything I should be aware of, when buying it second hand?

Thanks in advance!