Johnny, thank you for the correction, and shows why one can't trust memory 100%! The Quatro would operate in terms of the bass similar to the Vandersteen subs, then, correct? The phrase, "downward firing slot loaded system," sounds familiar. So, it has sealed top, slotted sub.
Could you clarify your comment in the above conversation with Mitch4t, where you said, "Some say front firing woofers have greater impact.
This is evidence that the woofers are radiating spurious energies because impact from a woofer is normally in the mid-range."
Thanks.