Hey guys, I've recently finished building my HTM-12's and need a sub system to go with them. After seeing how many were pleased with the VBSS style subs and the B&C 21's, I deceided to go ahead and order two Faital Pro 18HP1030's (arriving in 3 weeks) to put into two LLT cabs. The reason for these drivers are that they are readily available to purchase in the UK and seem to offer good value for money. I'm hoping the subs will give me lots of chest slamming midbass with also some ULF. As for the cabs I am planning two 400l (after port and driver displacement) boxes tuned to 16hz. With the driver at 15mm excursion, just over xmax I can get 110db at 15hz. The cabs will be 70cm high x 60cm deep x 115cm wide and will sit underneath the trio of HTM's. I will pair these subs with an Inuke DSP3000. My room is very small at just under 1000cuft and 250cm wide, so two of these will fit side by side. I am planning on having side firing slot ports (6x60x90cm) with a 10cm gap between each of the subs as shown by my shoddy drawing. Hope I've covered my BASIC outline of the build. I would greatly appreciate any help in terms of the build and even if this is ideal or not! The only things set in stone are the max cab size (70x60x115) and the drivers! Many thanks, Liam!