Now that I think about it, I think it was the subwoofer manufacturers saying they had to be matched perfectly for some reason. Learn something new every day. Thanks Chad!!Never has been new.. since the advent of the DVC sub people have been sending RADICALLY different signals to each coil.
Even to the point of changing the drivers parameters by damping one coil with a resistor or even shorting it and driving the other.
MSS Articles - Resistively Damped Operation Test
Back in the day nearly every passive sub was a DVC driver run in stereo with a LPF filter on it.
Even if you forget to hook up the other channel of the amp, the other coil is being resistively loaded as explained above by the output impedance figure of the amplifier, like a percentage of one ohm. It will be just fine, in fact the back EMF of the coil wil be such that the amp won't even know it's hooked up in terms current.
It's because they smoke the Sweet Stinky Cheeba.Now that I think about it, I think it was the subwoofer manufacturers saying they had to be matched perfectly for some reason.