Scolly,
I had the same type of success with a pair of JL audio E112 (with thiel 2.4). I use their built in high pass crossovers between the pre-amp and amp and it sounds great. The key to using subs is a good high pass crossover. I will be using subs on all my systems going forward. I crossover at 60hz but with the crossover I can really blend it anywhere between 100hz and 30hz if the gain is set right in the subs.
I had the same type of success with a pair of JL audio E112 (with thiel 2.4). I use their built in high pass crossovers between the pre-amp and amp and it sounds great. The key to using subs is a good high pass crossover. I will be using subs on all my systems going forward. I crossover at 60hz but with the crossover I can really blend it anywhere between 100hz and 30hz if the gain is set right in the subs.