1st order crossover desired low-pass frequency: 100hz At 8 ohms, that'd be about 12mH. But what happens with a DVC speaker? Each coil get a 12mH inductor? I'd like to think so... Speaker is 8+8 ohms and will be parallelled to a set of 8 ohm extended range speakers showing my amplifier 4 ohms per channel. *Edit: Oh my, a 12mH inductor is nearly $40.00 USD! Can I use an unpolarized electrolytic capacitor in parallel to each coil? They are only $3.75 each.