Thanks Pauln. The speaker has only two terminal for single wire . I don't know if I can connect two out put from the cable ( high or low ) to speaker and left the other two alone . My speaker is original , I'm thinking about up grade the tweeter and crossover . Do you think the up grade will give me significant improve in sound or not much ? Please give me you though . Thanks
I would connect the "low" pair of the bi-wires for now; they will be acting just like an ordinary pair of wires and should be fine. I use 16 gauge two-conductor cable... pretty much the same as what folks are suggesting about the underground wire at the garden section of the hardware stores.
"Heavy duty" is a rating that means it is designed for continuous service, as opposed to temporary short duration or incidental service. "Outdoor rated" means sufficient attention to the design and materials so that construction strength and function will withstand extreme conditions, so basically extra well built. Both of these are good qualities for speaker wires.
As far as upgrading things, I would suggest getting them hooked up first and living with them for a while to get their best placement and orientation for sound quality and other little minor details pretty well established - may take a few weeks of periodic moving them around to find the best arraignment, etc. All that is to become familiar with the way they sound at their best and maybe give you a chance to get some of the wire mentioned above or some commercial cables if you want.
Then, after you have had some time to get a good idea what these speakers do and how you like it, you may want to get in touch with Bob Crites. He knows EVERYTHING there is to know about your speakers and can recommend how to proceed; he makes replacement crossovers, has replacement parts and new original design parts, and has performed extensive research, etc.
His
website is here, the link goes to the page with crossovers for the Cornwall - scroll down to the "Klipsch Cornwall" section to see... in fact you may enjoy studying his whole website, it's full of information that may add to your enjoyment of your speakers.
Hey, once you get them hooked up and playing, come back and tell how it sounds!