Thanks for sharing the Skar woofer info! I had one delivered this week.
For other folks considering this woofer, just wanted to add a few notes from my install last night.
I have an 06 LX470 with ML audio, stock head, stock amp, stock everything. Only two wires at the sub, black and red. I ordered a 4 ohm DVC sub and wired them up in parallel for a 2 ohm setup. Followed kpecks box modification. Installed back in the rig and the sub sounds like poo. Will remove it tonight, wire in series for 8 ohm setup and try again. I'm guessing that will be the ticket.
I figured I'd wire it as 2 ohm since it appears the original Mark Levinson woofer was 2 ohm. But again, the new sub at 2 ohm begins to sound bad at moderate volume. And bumps the original sub box pretty hard! Since I already own the DVC 4 ohm speaker, I'll keep it and try 8 ohm. But I wonder if the DVC 2 ohm speaker, wired at 4 ohms would be the best fit for original system?
My original sub went out a few years ago. I just unplugged it and ran without a sub since then, which isn't really all that bad. But excited to add this Skar to the mix none the less.