Indeed the JL is very good. I recently picked up Image Dynamics IDMAX 12s and put them in sealed enclosures. They are unbelievable. They are superior to the JL. They play deeper and play at high SPL with modest power. Excellent driver.
NAD M15 /NAD M25 / PSB STRATUS GOLD / PSB STRATUS 6C /DENON AVR 3300/CARVER TFM 45/35 - ANTHEM MCA3 / NAD T163
IMAGE DYNAMICS / INFINITY RS3 / POLK MONITOR 10/ALTEC 501 / INTEGRA 50.3/PARADIGM DSP 3400 / GOLDENEAR AON3 / HK AVI 200
An Observer of many philosophies, a slave to none.