In 2001, I was using a Velodyne FSR18 with my Khorns and had no issues, mind you the neighbors did....
The response for REL regarding subwoofers
The response from REL regarding adding a REL Subwoofer for Cornerhorns.
"Unfortunately a speaker with that kind of sensitivity is going to be near impossible for any subwoofer to match with. The 2 volumes will never be able to match well. "
Is that true? It doesn't sound true to me. The SPL to power will be steeper than a less efficient speaker but it should jut be a matter of adjusting a powered subs gain curve to match that of the high efficiency speaker output or just using a more sensitive driver in the sub.
To bad I really wanted to buy a REL sub but I guess I'm not understanding how speakers work.