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Home | Subwoofers | Prima | APS 8 D

APS 8 D Subwoofer Driver | 500 W Peak Power | 200 mm | 4 + 4 ohm

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

General

Weight 3.1 kg

Dimensions

APS 8 D
Dimension A 222 mm (8.74 in)
Dimension B 187 mm (7.36 in)
Dimension C 94.6 mm (3.72 in)
Dimension D 79 mm (3.11 in)
Dimension C1 104 mm

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.

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