Info:
I purchased (4) of the SI HT18 Dual 4 ohm subs earlier this year and due to space, only (2) will fit in my HT comfortably. Which means I have an extra set left over.
Mfg info is here:
HT18 18″ Subwoofer | Stereo Integrity
Condition:
BNIB
Price:
SOLD
Photos:
I don't have any right now but can provide some if it's a big deal. Again, these are BNIB.
Here's a stock photo, though: