Given your budget you can eiher have fancy connectors like Next Gens or better cable. Spending your money on NextGen's which are designed to get you the last nth of detail in the mids and highs hardly makes sense. IMHO what you need is a well shielded cable - in fact, many companies offer a coax design for this application.
VH Audio makes terrific stuff - drop Chris an email and ask him for his RCA recommendation. Miner42 and Rives have also provided very good recommendations.
Check the Gon too - use advanced search Cables/Subwoofer - tonight there is a very serviceable 3m Analysis Plus subwoofer cable for $55.00 As a happy AP customer I am pretty sure it will do the job... you can always have it reterminated
VH Audio makes terrific stuff - drop Chris an email and ask him for his RCA recommendation. Miner42 and Rives have also provided very good recommendations.
Check the Gon too - use advanced search Cables/Subwoofer - tonight there is a very serviceable 3m Analysis Plus subwoofer cable for $55.00 As a happy AP customer I am pretty sure it will do the job... you can always have it reterminated