I plan to buy Arcam AVR300 or Denon 3805 receiver. If I connect a receiver with a subwoofer with seperate audio cables instead of one subwoofer cable, which cable should I use? Is a standart speaker cable for instance 12-Gauge cable enough? And also I am lost in cable definitions. What are the differences between these cables: the optical cable with or without Toslink, digital coaxial, glass digital optical, optical fiber cable with or without Toslink?