The APS 8 D is designed to deliver maximum performance in a sealed enclosure with ultra-compact volumes from 7.5 lt. to 8.5 lt. It features push connectors for ease of wiring and configurations and has been developed with a primary goal: to deliver high output in tight spaces. Output is a matter of excursion; the more air the cone moves, the more output. However reduced mounting depth traditionally has meant low excursion. 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. The surround and spider have been carefully designed to prevent the rocking-mode phenomenon. The cooling circuit has been designed with air vents on the basket underneath the spider, eliminating the need for vents on the bottom-plate. This allows the subwoofer to be mounted close to the back wall of the enclosure, making the most of the reduced mounting depth.
Technical Specs
|
Nominal diameter
|
200 mm (8 in) |
|
Impedance
|
4+4 Ohm |
|
Power Handling - Peak
|
500 W |
|
Power Handling - Continuous
|
250 W |
|
Sensitivity
|
83.5 dB |
|
Magnet Material
|
HIGH DENSITY FLUX FERRITE |
|
Magnet size D x d x h
|
120 x 50 x 28 mm (in.) |
|
Cone Material
|
WATER REPELLENT PRESSED PAPER |
|
Xmax
|
8.8 mm (0.35 in) |
|
Xmech
|
16.5 mm (0.65 in) |
|
Voice Coil Winding Height
|
40 mm (1.57 in) |
|
Driver Displacement Volume
|
0.67 l (0.024 ft) |
Electric-acoustic Specs
|
Re
|
2.1 Ohm |
|
Fs
|
30 Hz |
|
Le
|
1.1 mH |
|
Vas
|
25.5 l (0.901 ft) |
|
Mms
|
85 g (2.998 oz) |
|
Cms
|
0.3 mm/N |
|
BL
|
8.8 T•m |
|
Qts
|
0.44 |
|
Qes
|
0,46 |
|
Qms
|
5.1 |
Features
- Ultra-low profile (3.11 in. / 79 mm) for maximum installation flexibility.
- Designed to deliver maximum performance in a sealed enclosure
starting from 7.5 lt.
- Special designed cone-dustcap-basket geometry which guarantees a
long linear excursion capability (almost 9 mm, one-way) while keeping
the mounting depth to minimum.
- Air vents on the basket underneath the spider, eliminating the need for
the central pole vent allowing mounting close to rear wall of enclosure.
- Massive motor assembly optimized with FEM (Finite Element Modeling)
for perfect control under high power, high excursion conditions.
- Water-repellent pressed paper 8 in. cone featuring a profile developed
with simulation and optimized with the Klippel Scan Vibrometer.
- Dual voice coil design specifically developed to be combined with either
AF C8.14 bit (2 CH + 2 CH bridged), AF M5.11 bit (Sub CH) or AF C4.11 bit/AF C4D/AF M4D (2 CH bridged) amplifiers.
- Steel mesh grille and plastic gasket included.