With the aim of providing high acoustical output even when used with lower power, the APS 8 R was designed for use in an 8.5-litres reflex enclosure, with tuning between 30 and 40Hz.
This allows the Subwoofer to be mounted close to the back wall of the enclosure, making the most of the reduced mounting depth..
The cooling circuit has been designed with air vents on the basket underneath the spider, eliminating the need for vents on the bottom-plate.
The surround and spider have been carefully designed to prevent the rocking-mode phenomenon.
Prima subwoofers employ a special cone-dustcap-basket geometry which guarantees large excursion of the mobile group, while keeping the mounting depth to a minimum.
However reduced mounting depth traditionally has meant low excursion.
Output is a matter of excursion; the more air the cone moves, the more output.
Prima Subwoofer components have been developed with a primary goal: to deliver high output in tight spaces.
The APS 8 R has been specifically developed to be combined with either the AP8.9 bit or AP4.9 bit / AP4 D.
With the aim of providing high acoustical output even when used with lower power, the APS 8 R was designed for use in an 8.5-litres reflex enclosure, with tuning between 30 and 40Hz
