That really is the crux of this dilemma isn't it? How does one improve the Sierra under its original design targets and price point? I don't think it is possible.
BUT
There's this crazy guy that is obsessed and diseased... Dave's cure for this madman entails the following:
- linear frequency response
- horizontal dispersion maintained
- symmetrical vertical dispersion maintained, but narrowed, resulting in less floor & ceiling bounce
- lower distortion
- greatly increased dynamic capability
- lower intermodulation distortion
oh yeah, and OUTPUT like WHOA