Strumenti Acustici di Precisione (S.A.P) Quartette

5 drivers/4way, 95db sensitivity, 32hz-40kHz 

No crossovers in the midrange with double 5" alnico full range speakers, 2" horn-loaded tweeter, piezo super tweeter and a side-firing 12" woofer in two sealed cabinets.  (work in  progress, stay tuned!)