Hello Alo
Welcome to AudioCircle!
Something like this?
http://www.htguide.com/forum/showthread.php?44276I have those Satori woofers. They like vented better than sealed, but I don't know how they like free air. Any driver can be made to work in any application with enough EQ.
It has good motor so it can tolerate being manhandled by an amp and Purifi will make them submit.
The satori has good linearity at LF so it can be boosted. The baffle width determines the frequency of the portion of rolloff caused by diffraction. There is also dipole cancellation to cause rolloff as well as the natural rolloff due to falling acoustic impedance of the cone also which together make dipole rolloff steeper than sealed or ported box. So you will need to boost the LF of the satoris to get the F6 down into comfortable territory for your subwoofer. F6 at 80-100Hz is adequate given the bass driver can easily achieve 500Hz. This crossover frequency should be adjusted by ear to the richness you desire. Higher Fxo will be slightly richer until SEAS inductance starts to slow down the woofer and blur. But you have at least an octave or two above 100Hz, so no problem.
Your subwoofer is DIY with very capable driver with decently low coil inductance, so you can push the sub LP filter as high as you need to compliment Satoris. You are in good situation to try your experiment. Some think dipole woofer must be high Q, and that is true if you will not apply EQ to boost the LF response. Then a high Q bass driver sloppiness allows natural self boost, but with the high cost of loss of damping. A well damped driver will maintain good detail when boosted and can handle the power and excursion for EQ boost. This is the wtg for dipole bass imo. Damping must be maintained in one way or another. Servo does it electrically, but mechanical damping is just as valid.
The only question is how will you apply the necessary EQ? Passive? analog active? or DSP active?
Beware the garage band speaker management in a box solutions like Behringer, as they do not have the fidelity you are accustomed to, nor that your ultra high end drivers and amp deserve. DEQX does have the fidelity and flexibility. But so does building custom analog filters for much less money, but significantly more time. Using all passive, speaker level filters will require good measurements, simulation to design and a large library of parts to fine tune the design. For dipole bass you need a lot of "boost" which means inductors and loss of gain in passive filter. Anything you can do with passive bass EQ is more easily done with active analog filter and then you maintain the electrical damping of bass as the speaker deserves.
I recommend
this book for helping with analog filter design.
Elliot Sound sells DIY PCB and plans to build several active crossovers of varying complexity. You can get a feel for what's required in your application by looking over his crossover and bass boost projects.
