I have a Elemental design LT300. It has a sub sonic filter of 18 to 20 Hz. I am looking at the RSS390HF driver. I can go up to a 12 cubic foot box if needed. Playing around in unibox i have so far....will post exports later.
250 Liters
2 15.24 CM flared ports.
96 cm port length
20hz tune
These specs look good to me on the curve, but I am unsure say if the amp and speaker runout around the same time.
Thanks,
Jeremy