HERE ARE THE FLAT CATS
Passive radiators, the friend of the small enclosure. But if poorly tuned, or tuned too low the bass becomes smeared and distorted. In the Classic Pop I use passive radiators and a simple acoustic pathway designed to break up standing waves and harness the extra power of the woofer, to add clarity and accuracy rather than extend the bass unnaturally far. This combination leads to excellent clarity, sound reproduction, and very even response with a natural sounding bass. Not only are they suited for excellent jazz and pop reproduction, but work well in almost any space. These same qualities make them excellent studio monitors.
Additionally, the crossover is designed for an even response across the range of human hearing aiming for a natural sound.
And if you (Gasp!) use an EQ, they are flexible and accurate enough to allow for great room correction. Or, you can just turn up the bass and let them drive, so to speak.
The Model Classic Rock is your classic ported speaker. With an enclosure tuned down into the low second octave of the piano bass response is excellent. Bass comes easily.
The inverted position of the drivers as compared to the Classic Pop, gives a nice, open space for the bass to reproduce, and allows the tweeter to isolate at the top of the enclosure in its own space (as in the Classic Pop, just located differently). This combination of sealed tweeter and ported woofer allows for fine accurate treble for horns, guitar, and voice, while still providing ooomph to the bass.
Additionally, the crossover is widened, giving more distinct separation on the drivers, and pushed towards the bass, creating a warmer sound that fills the room.