Hi,
What kind of freq. range and signal these channels are supposed to reproduce?
Are they supposed to be implemented in a digital layout only or both?
In case it's digital, maybe based on an axis style DSP?
Matrixed Fl and C for Hl and same process for the Hr with Fr and C, all of that topped with an axis setting?
Full range, "small" >80Hz? With the roll off setting 3kHz, 7kHz, 9kHz?
Whatever it'd be, very interested to know more.
If it's not critical strategic subject (read : future project or functionnality), would like very much to read some input from the Base...

Tchin!

juno

Epectaz
Mas de l’Issart (sur RV) (Saint Félix de Pallières) Pallières 30140