Ported Enclosure AR12D Amplitude Response(dB/Hz) Recommended Enclosures Please note : Our recommended box volumes are given for internal air requirements. AR12D Amplitude Response(dB/Hz) 38 Sealed Enclosure 36 Frequency Frequency Ported Enclosure Sealed Enclosure (Recommended) Box Volume: 1.0 (cu. ft.) to 2.5 (cu. ft.) Box is given as internal air volume including driver displacement Box Volume: 1.0 (cu. ft.) to 1.6 (cu. ft.
