Kudos for the edgewound coil but that 8" coil can handle four or five of the amplifiers they are pairing a single unit with.
Maybe not. The SB16U probably since it is an overhung design and a claimed 32mm xmax so that's probably a lot of coil there. The PB16 is an underhung though so it may not actually have that much wire mass. Doesn't look like it in the exploded view. Should be plenty for what they've paired it with though.
I was wondering what the frame diameter is on that driver. Could be actually 16" or could be 17". I read some people discussing the 16" size choice like it didn't make sense to them cause it wasn't "standard". There have been oversized and odd size drivers on the market for years. Orion HCCA 15's are really 16's, RE XXX's are oversized, JL drivers have been odd sizes for years, square subs, pentagons, 11's, 13's, 22's, etc...SVS doesn't sell these except as part of a finished powered system anyway.