Belt Pack--This cordless headset style is comprised of two components: a wireless amplifier and a headset top, If the user wants to make a call, he only needs to press the key on the headset and use voice recognition to initiate the call.
Apocalypse. The Apocalypse line consists of a single subwoofer: Model AP12D. AP12D is a 12-inch speaker and requires 1.5 cubic feet of air space for sealed enclosures and 2.0 cubic feet for ported enclosures.The RX line is Planet Audio's most extensive offering including 8, 10, 12 and 15-inch subwoofers.xample: 4,032 / 1,728 = 2.33 cubic feet. The air space/volume of this enclosure is 2.33 cubic feet. Planet Audio's Big Bang line of subwoofer consists of two 12-inch (models BB12D and BB212D) and two 15-inch subwoofers (BB15D and BB215D).
Report Abuse. Most manufacturers of decent subwoofers design the crossover frequency to start around 250Hz. The larger the speaker cone size, the lower frequency it can reproduce without distortion. A 15â sub will go down to 20-25Hz which will reproduce the audio signal you feel more than actually hear. I wouldnât suggest purchasing any sub that will not go down to only 30Hz. If itâs not rated below 30Hz, you will miss out on some of the lower end program material including sub-harmonics. RudeKarma Â· 9 years ago.