CS TUBE AIR PORTS are unlike the common low cost air tube ports available on the market as CS AIR TUBE PORTS are made of a strong rigid 3mm thick walls with a flex shape that produces high pressure output of air and specifically tuned to 42 Hz frequency - making it ideally suited for both CS APOLLO 12 & CS APPOLO 10 subwoofers as well as other hi-power subwoofers.

The Tube Air Port is designed based upon technical data from the speaker manufacturer so that they can design a speaker box enclosure to produce a specific low frequency (i.e. 42 Hz) and allows only a specific small range of low frequencies to move thru the tube air port.

These low frequency wave forms are pushed out in higher force due to the flex shape of the tube air port creating a strong deep bass sound at a tuned low frequency.

Due to the high power of low frequency waveforms that move inside the subwoofer speaker box, thicken wall structures are required along with a self-locking seal to help prevent audible distortion that sometimes occurs using hardware pipes sold at hardware stores or thin walled tube air ports seen online.