Not really sure what the "low end" spectrum means. 8TC is one of my favorite cables and I've used in with a number of systems with very good results. You may find that 4TC works pretty well for your short length also. I have no issues at all using 4TC for shorter runs, you can save some cash and even add another run in the future if you decide. I'd try the 4TC first.
Kimber 8TC with Energy Connoisseur C-9s?
I'm looking to find a quality speaker cable to connect to my Energy Connoisseur C-9s. They are NOT bi-wireable, and have 3 6.5" woofers... I've read that the Kimber 8TCs don't do well with the "low end" spectrum. I will be hooking them up to an Integra DTR 5.4 HT receiver. They'll be 6' in length. Are these cables a good choice, or am I wasting my $$$?