But what you're doing is entirely different from what Polk did. Polk used polarity inverted drivers to cancel interchannel crosstalk, which resulted in a spacious soundstage.
You're basically just doubling up the bass panels, which, in addition to requiring a wide room, will give you lots of midbass, but not much more low bass.
It probably sounds really cool, but if you actually measured the response, you'd probably find an obvious bass peak somewhere between 60Hz and 80Hz.
Personally, I'm getting excellent results using a Paradigm X-30 crossover to mate my Maggie 1.6's to a 12" front-firing sub crossed at just above 50Hz. It's about as seamless as it gets and extends the response to the mid 20Hz's.
You're basically just doubling up the bass panels, which, in addition to requiring a wide room, will give you lots of midbass, but not much more low bass.
It probably sounds really cool, but if you actually measured the response, you'd probably find an obvious bass peak somewhere between 60Hz and 80Hz.
Personally, I'm getting excellent results using a Paradigm X-30 crossover to mate my Maggie 1.6's to a 12" front-firing sub crossed at just above 50Hz. It's about as seamless as it gets and extends the response to the mid 20Hz's.