At list pricing: about 1:19 At used/paid prices: 1:8.5
The Raidho D2s, when 'tamed for the room and its own bass' still reaches down to 31Hz near flat. Sealed SVS subs (3) are low passed at 40, 50, and 60 to merely add ambiance/ultra-low reinforcement with D2s run full range.
(I know I need a good crossover to high pass the D2s...eventually.)