Kimber 4tc good enough?


I'm currently using a single run of kimber 4tc to drive my persona 7f speakers with a hegel h360. While the dealer I bought the speakers from suggest wires don't matter I notice the stuff he uses is bigger than a garden hose and a product the shop doesn't even carry. Would bi wiring with a second pair of 4tc wires instead of the jumpers matter? 
Can the 4tc choke the speakers of watts?
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I bought the 4tc over 30 years ago. I don't have the cable the dealer used in the demo I just find it cutious that he would say 'cables don't matter' while himself use some apparently serious stuff.

When I bought a pair of salon 2's(used) I had lightweight bass and some suggestions were to biwire or replace the 4tc completely with heavier gauge. I would like to know if a biwire run of 4tc would provide the speakers with more watts/current than the single run I use now?
I bought a  4TC for bi-wring , it is just two 7 feet 4tc 's cables coming to gotogether at the bananna .   Those 8 pieces of cable  will bring a lot more .
And it sounds very good  running into a Quad  S5 which is a speaker that needs some juice.  150W Belles is the amp.
Wire was bought from Audio Advisor .
I’ll take that as a yes. It appears kimber changed the line some so I’ll be buying used to get the same blue/black I use now.
try some 8TC, if it doesn't sound better, should be easy to sell for what you paid...maybe the dealer was afraid if you were told you needed more expensive wire, you might not buy the speakers...clearly the dealer likes the bigger stuff...