Hi guys. Nice to see so many people on this forum have varying degrees of higher education. I do too, but that doesn't matter when it comes to enjoying your hi-fi system. Nevertheless, I have a new model REL S/812 for about 3 months now. It's a wonderful product and definitely the best sounding powered subwoofer compared to several others I have owned over the past 30 years. There are two reasons I don't use the provided REL speaker cable. 1.) It's a rather flimsy, inexpensive, low-grade speaker cable. 2.) It's well below the level of quality cables I have throughout the rest of my system and I just can't feel good about using that. Personally, my thinking has always been to use the least length of speaker cable possible. For that matter, the same is true for any other cable (power or signal). Speaker cables, however, are probably the most important cable to keep as short as possible.
Simna, once finalizing the best location for your REL subwoofer you can either 1.) cut the supplied speaker cable to your required length, 2.) purchase the REL upgrade speaker cable ($500 at retail price) and cut it to your required length, or 3.) purchase another brand speaker cable, made to work with REL, and order it at the required length. Add about 1 foot to your required length so in the event you need to move the woofer around a bit, for sound improvement if other variables change such as new furnishings, you will have some excess to work with. What I did was purchase Audioquest Rocket 88 speaker cable that is terminated with the Neutrix Speakon connector. Audioquest makes this to order, that is, to your specified length. They also use an upgraded part from Neutrix that is a far superior version of the Speakon connector that REL supplies. They will make the REL cable with options of either the Rocket 22, 44, or 88. The Rocket 88 also includes the DBS device so I made that my preferred choice. It's expensive but I only needed 9 feet. Any authorized Qudioquest dealer can place that order for you. My local dealer was very helpful, Audioquest was very quick, and I received the order in about 1 week. I feel very satisfied and have zero worries about any of the topics discussed above. I hope this helps you.
Simna, once finalizing the best location for your REL subwoofer you can either 1.) cut the supplied speaker cable to your required length, 2.) purchase the REL upgrade speaker cable ($500 at retail price) and cut it to your required length, or 3.) purchase another brand speaker cable, made to work with REL, and order it at the required length. Add about 1 foot to your required length so in the event you need to move the woofer around a bit, for sound improvement if other variables change such as new furnishings, you will have some excess to work with. What I did was purchase Audioquest Rocket 88 speaker cable that is terminated with the Neutrix Speakon connector. Audioquest makes this to order, that is, to your specified length. They also use an upgraded part from Neutrix that is a far superior version of the Speakon connector that REL supplies. They will make the REL cable with options of either the Rocket 22, 44, or 88. The Rocket 88 also includes the DBS device so I made that my preferred choice. It's expensive but I only needed 9 feet. Any authorized Qudioquest dealer can place that order for you. My local dealer was very helpful, Audioquest was very quick, and I received the order in about 1 week. I feel very satisfied and have zero worries about any of the topics discussed above. I hope this helps you.