My Dream SubWoofer - does it exist?


After much research with the help of other Agon'rs, I have developed a short list of demands for my new sub:
real cherry or rosewood vaneer
downward firing driver (I don't like speaker grills)
constantly variable gain
constantly variable low-pass crossover
constantly variable phase adjustment
low-level, unbalanced inputs
low-level, unbalanced outputs, high-pass crossover at 80Hz
minimum 200W amp
speaker terminal inputs
minimum 10" driver size
Does this sub even exist? I can't find it anywhere, has anyone else seen anything like this?
realremo
Couldn't you buy any downward firing sub and use a Bryston 10b sub crossover and do this?
I'm sure you could supply your specifications & get someone to make a one of a kind.
Holy cow! $3000 for an external crossover is a bit much considering I am only running B&W 685s...I should have mentioned that...