Hi:
I am a reviewer so I am going to respond to you privately. Extra long speaker cable lengths have the potential to cause problems, such as roll-offs in the low bass and high treble. Also, speaker cables with unusually high capacitance may not be especially friendly to your amplifiers given a 30 foot length. Thus, I would not opt for a some of the fancy (and expensive) cables that manipulate the capacitance, inductance and resistance in order to ostensibly "tune" their product to a given amplifier by influencing the frequency response of the amplifier. My suggestion is to use as THICK a cable as possible (at least 12 gauge and perhaps even 8 or 10 gauge) to maintain as flat a response as possible. Best of luck.
I am a reviewer so I am going to respond to you privately. Extra long speaker cable lengths have the potential to cause problems, such as roll-offs in the low bass and high treble. Also, speaker cables with unusually high capacitance may not be especially friendly to your amplifiers given a 30 foot length. Thus, I would not opt for a some of the fancy (and expensive) cables that manipulate the capacitance, inductance and resistance in order to ostensibly "tune" their product to a given amplifier by influencing the frequency response of the amplifier. My suggestion is to use as THICK a cable as possible (at least 12 gauge and perhaps even 8 or 10 gauge) to maintain as flat a response as possible. Best of luck.