There are two important factors to consider for this article:
High-powered loudspeakers and their associated amplification (usually over 1,000 watts) produce high current demands and often 10-gauge wire is preferred to reduce voltage drop.
The current-carrying capability of a conductor is determined by its cross-sectional area.
Cross-sectional area is determined in a round conductor with the formula:
A(Square Inches) = πr
Now that the radius is known, the cross-sectional area can be calculated with the
A = πr^2
Adding two 13-gage wires together produces a cross-sectional area of
0.0041 + 0.0041 = 0.0082, the exact cross-sectional area of a 10-gage wire.
Thus, by pairing two sets of two 13-gage conductors together, Clark SPKR1304 cable can be used as a direct substitute for SPKR1002 or any other 10-2 cable.
Todd A. Boettcher, CPBE