I looked up a review of this sub and it said Speakon connectors on each end of a 12 gage cable were used as a specialty Neutrik connector wire. The cable was over $100. Nuts. You can buy Speakon connectors for under $10 each (with shipping) and make your own cable. The Speakon connectors are used normally for portable speakers for performing. They are a very nice connector and I put them with females on my living room wall to carry signals to surround speakers. It is a tough reach around my equipment cabinet and these can plug in blind for me. They twist and lock into place till you want to remove them but do not pull loose without the turn to unlock them. My cable from there to my amp uses a Speakon for the wall end and a banana pair at the other end to plug into the amp output. I used 3 single Speakon 4 line connectors to run a three pair of surrounds (side, ceiling atmos and rear pairs). LEts me connect 6 speakers with only 3 connectors that way so less chance of errors working blind. I really see no reason to use Speakon connectors unless this sub has only a female Speakon for the input connector. If so go to parts express
http://www.parts-express.com/cat/speakon-hpc-speaker-connectors/1510
and pick up the appropriate Speakon connector to fit the sub and use a banana or whatever fits your amp output on the other end of any decent wire you wish to use. I do not understand if you are feeding an amp output to a sub amp why you are really carrying any appreciable current but may just be using a simple way of connecting equipment with an impedance matching resistor for the input of the speaker amp. You could probably use 18 gage wire if you wanted! If you are feeding the amp of the speaker with an amp output it is set up like some car audio. For good wire at a reasonable cost try bluejeans cable. I really doubt that using the fancy wire makes a bit of difference from using a good flexible wire with a banana plug or other amp type connector unless the input to the sub is only Speakon female.
If so it seems likely that this sub is not really designed primarily for home use. The Speakon connectors are really good for frequent connect/disconnect sturdy connectors for mobile equipment. They lock into place so are easy to plug in and stay in place till you want to remove them. Bananna plugs come out easily and are not ideal for a stage use for performers.
http://www.parts-express.com/cat/speakon-hpc-speaker-connectors/1510
and pick up the appropriate Speakon connector to fit the sub and use a banana or whatever fits your amp output on the other end of any decent wire you wish to use. I do not understand if you are feeding an amp output to a sub amp why you are really carrying any appreciable current but may just be using a simple way of connecting equipment with an impedance matching resistor for the input of the speaker amp. You could probably use 18 gage wire if you wanted! If you are feeding the amp of the speaker with an amp output it is set up like some car audio. For good wire at a reasonable cost try bluejeans cable. I really doubt that using the fancy wire makes a bit of difference from using a good flexible wire with a banana plug or other amp type connector unless the input to the sub is only Speakon female.
If so it seems likely that this sub is not really designed primarily for home use. The Speakon connectors are really good for frequent connect/disconnect sturdy connectors for mobile equipment. They lock into place so are easy to plug in and stay in place till you want to remove them. Bananna plugs come out easily and are not ideal for a stage use for performers.