I'm looking for a woofer with following features:
Does it exist?
Not to my knowledge. Any decent woofer of the specs required
costs easily 50 € in Europe without postage. You should consider
second hand locally.
What's the intended purpose?
I'm thinking to a 2 way system...
It got a Qts of nearly 1 (0,95), that gives you an extremely
boomy and unprecise bass, in a sealed box ...