The original Chorus had a freq resp on 45hz - 20khz, +/- 3. The Cornwall was 38 - 20. The Chorus 2, had a revised spec of 39 - 20. More bass, but still, not very deep for a big box. Altho i do not have either model, I have a similar issue with the Epic CF-4, the largest of that line from the mid 90's. Because of the high efficiency, at low volumes there is not much bottom end, unless it is in the recording, or if you can crank on the volume.
It almost makes more sense these days, to go with smaller mains and use a subwoofer, instead of taking up all that real estate with the big boxes. I'm lucky in that I have a separate room for big boxes because they would be way too large in any other room in our digs.
NP - Raging Slab - Dynamite Monster Boogie Concert