Essentially the only spec. that matters for speaker cable is the resistance per foot. The longer the cable, and the lower the impedance of the speaker, then the lower resistance per foot is required.
Wire Size | 2 ohm load | 4 ohm load | 6 ohm load | 8 ohm load |
22 AWG | 3 feet max | 6 feet max | 9 feet max | 12 feet max |
20 AWG | 5 feet max | 10 feet max | 15 feet max | 20 feet max |
18 AWG | 8 feet max | 16 feet max | 24 feet max | 32 feet max |
16 AWG | 12 feet max | 24 feet max | 36 feet max | 48 feet max |
14 AWG | 20 feet max | 40 feet max | 60 feet** | 80 feet** |
12 AWG | 30 feet max | 60 feet** | 90 feet** | 120 feet** |
10 AWG | 50 feet max | 100 feet** | 150 feet** | 200 feet** |
The above table tells you all you need to know about speaker cables.
Too high a capacitance is only occasionally an issue. This can reduce HF. The thing is though, this has only ever been observed in exotic high priced audiophool cables, where the designers have used exotic materials with the wrong dielectric constant. That will not be an issue for any of the cables we have recommended here.
I did look at information on the Shot Gun box. Nowhere is there any coherent explanation of its design or function. Everything written about it is all in Audiophool gobbledygook, otherwise known as codswallop.
