need an enclosure design, who still does them??

[Jeffdachef 5,000+ posts]

It's completely install dependant. The 4 10's would have a s**t ton more motor force than the 15's, and should handle more power.
Sent from my Motorola 2950 Special Edition 3w

With multiple subs motor-force doesnt get accumulated only thing that improve is cone area and voice coil heat dissipation, However two 15s would have more cone area.

 

[The_Dealer]

So the extra motor force doesn't gain anything, the gain is from the added cone area?

Sent from my Motorola 2950 Special Edition 3w