I will create a replica of TAD CE1 of what concerns the woofer. If I come on subwoofer forum because the woofer operates 34-250Hz . The efficiency of this loudspeaker is merely 82db/1W/1m . As I will built the driver using Thai PA and car subwoofer components, I want to know the resonance frequency and Qes of this driver. The external volume is about 60 liters , I suppose the internal volume to be 40-45 liters . Compact Evolution One — TAD LABORATORIES
