He only gives 2 dimensions, without any clue which they are..... and doesn't say whether the driver is a 12 or 15. It looks like it could be some version of a 614, but the dimensions I've looked at are a bit off.

Assuming a 12 inch" driver...... would any Altec driver with a factory cone, not have a vent in the voice coil dome?

Altec Lansing N8500-8A 2 Way Dividing Network Crossover - eBay (item 380212897257 end time Apr-05-10 13:43:02 PDT)

This is only about 1.5 hours away from me.