@jtwrace: We don't have a plan to change A370 to use Hypex module. One of our product consideration is never retire a product so that the old ones out there can be serviced. In addition, there is really no advantage of Ucd vs the power amp module we use in A370 except Ucd is more compact and the amp can be made smaller.
@rak313: I will provide T/S parameters in this thread soon. I know a lot of members need that to gauge the driver. But for me, the more important issue is if the driver and amplifier pair make the best use of each other. So my response to T/S parameters are always slower.
These models are best used for crossover above 100hz. If customer does not need that, a regular SW12-4 will work just fine (may even be cheaper). The applications I can think of are: 1) lifestyle sound system. This will be a killer substitute with much better bass sound. 2) Esoteric drivers with limited low end extension, such as ribbon, full range, dynamic, and others... The standard max crossover is 200hz. But I think it can be push to 250hz if we consider baffle step function that emphasize a bit above 100hz if the sub is placed off the wall.
@sts9fan: Yes. These will be products in both kit form and finished subs. I am arranging air ship and they should arrive later next week.