High level Subwoofer connection


I am in the process of adding a pair of subs to my two channel music system. I plan on using speaker cable from the amplifier speaker output connectors to the high level inputs of the sub (ie, REL recommended).
My questions are:
1. Will the type of speaker cable make any difference (ie., stranded, solid core)?
2. What speaker cable do you recommend using?
In advance, thanks for any thoughts or suggestions you may have.
louisl
I'm using a maybe 12 foot run of Canare Star Quad with spades at the amp end and an angled (recommended) Neutrik Speakon on the REL side for my single Q150e...looks and sounds great.
Every reply seems to think you have REL subs, but you do not actually say that. You only want to utilize a high level input to the subs similar to the way a REL receives its signal, correct?
I use the same speaker cable to the subs. However, instead of a long run back to the amp I use short cables from the main speakers to the subs. The speakers have bi wire terminals with lugs that accept spades and bananas. So, it's a simple matter to use banana connectors for the sub wires.
Is it possible to use a high level input if there isn't one? The post says "(ie, REL recommended)" which seems to indicate a REL is in the works...hmm...