Steve, your initial post states deeper and tighter bass, and your last one says the bottom end is not quite as defined. I do agree that simply adding a subwoofer will give you deeper bass, but if you are planning to run the Tylers full range, that lack of definition will still be present. How will adding a subwoofer improve definition of the Tylers, unless you use a high pass crossover to remove bass from the Tylers, which doesnt make much sense for that speaker?
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1369488445&openfrom&22&4#22
I am curious as to what amp and speaker cables you are using.
I might be chasing an elusive improvement.I dont think so, but do believe the wrong direction. The Tyler Linbrook Signature must be somewhat sensitive to speaker cables, as someone with these same speakers found out in this thread,
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1369488445&openfrom&22&4#22
I am curious as to what amp and speaker cables you are using.