Try 6,5" Lowthers and reconsider paper. It's very fast, hopefully not much faster than yr tweet. The drivers mentioned above, excellent though they are, are very difficult to work with and, I speculate, mismatched sonically with yr alu & fiberglass.
I would further recommend you reconsider the request for a 4,5" to play 150Hz and look for a bigger boy: say, 8".
Regards
I would further recommend you reconsider the request for a 4,5" to play 150Hz and look for a bigger boy: say, 8".
Regards