Speaker wire size VS speaker size. Should bigger speakers use bigger wires?

After 16 years using Monster 2.4s speaker wire (fairly large gauge as it looks like #10 or maybe even #8) I thought I'd try Dueland 16 gauge copper, tin plated, oiled & cotton wrapped. They have been in my system for a few months now.  While the music is very detailed and great sound stage, I feel the bass may be a bit weaker.
I know the "Monster" word is not favored on A/Gon, but it always sounded very very good.  Before I kick out the $ for the new Dueland 12 gauge, I was curious as to the wire size and effect on sound.  I see some folks run up to 22 gauge which to me is silly puny.  My wire length is 8"
Amp Krell FPB300cx, speakers Infinity Renaissance 90.  The speakers are 4-way semi-planer with a nice 10" woofer that goes down to 27hz which aint bad.
Thanks for your input, John