Emotiva has a couple of floorstanding models that seem to address your concerns. They are the Airmotiv T1 and Airmotiv T2. Both models have twin woofers, a dedicated midrange, and Heil-type folded ribbon tweeter. I haven't heard the Airmotivs, but I've heard several GoldenEar and MartinLogan models which use a very similar tweeter, and those tweeters should give you exactly the treble you're looking for. The folded ribbon is very smooth and natural, yet very resolving. They are totally free of ringing and overshoot common with metal dome tweeters.
Although your Harbeth is the "classier" speaker, I agree with you that that 75Hz rolloff is pretty insurmountable given the kinds of music you like to listen to. 75 Hz is just way too high a rolloff for rock, big band, and classical music. These Airmotivs will give you the bass you want on their own, and their frequencies are low enough to integrate easily with a sub.
The Absolute Sound published a rave review of the T1 just a few months ago.
The T2 has 8" woofers and is spec'd to -3dB @ 35 Hz. It is $999/pair.
The T1 has two 6" woofers and is -3dB @ 37 Hz. It is $699/pair.
The T1 is inexpensive enough that you could get a decent subwoofer that would reach into the 20's, and you'd have no trouble integrating it.
In addition to The Absolute Sound review, there are several other enthusiastic reviews for the Airmotivs:
c|net
HomeTheaterReview.com
Make sure you have a 4-ohm capable amp for these.
Although your Harbeth is the "classier" speaker, I agree with you that that 75Hz rolloff is pretty insurmountable given the kinds of music you like to listen to. 75 Hz is just way too high a rolloff for rock, big band, and classical music. These Airmotivs will give you the bass you want on their own, and their frequencies are low enough to integrate easily with a sub.
The Absolute Sound published a rave review of the T1 just a few months ago.
The T2 has 8" woofers and is spec'd to -3dB @ 35 Hz. It is $999/pair.
The T1 has two 6" woofers and is -3dB @ 37 Hz. It is $699/pair.
The T1 is inexpensive enough that you could get a decent subwoofer that would reach into the 20's, and you'd have no trouble integrating it.
In addition to The Absolute Sound review, there are several other enthusiastic reviews for the Airmotivs:
c|net
HomeTheaterReview.com
Make sure you have a 4-ohm capable amp for these.