Another interesting comparison:
4 X Dayton Reference 18's and 3600 watts in a 9 cu ft enclosure (yellow). $1000 of drivers shipped.
2 X LMS Ultra 5400s in a 8 cu ft enclosure and 4000 watts (orange) $1900 of drivers, shipped.
Both within rated Xmax to 10hz, both go over by a few mm under 10hz. LMS pair has a couple db below 20hz, then Daytons take over >20hz.
2 X Daytons in 5 cu feet with 2500 watts vs 2 X LMS5400 and 4000 watts in 7 cu feet
Clear advantage to LMS sub 30hz, but very close 40hz and up! $500 vs. 1900. Edited by Gorilla83 - 10/31/12 at 7:28am