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Home | Subwoofers | Prima | APS 8 R

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

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. The APS 8 R has been specifically developed to be combined with either the AF C8.14 bit or AF C4.10 bit / AF C4D / AF M4D. Prima subwoofer components have 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 Ohm
Power Handling - Peak 500 W
Power Handling - Continuous 250 W
Sensitivity 84 dB
Voice Coil Ø 40 mm (1.6 in)
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)
Driver Displacement Volume 0.67 l (0.024 ft)

Electric-acoustic Specs

Re 3.7 Ohm
Fs 32 Hz
Le 1.45 mH
Vas 26.5 l (0.936 ft)
Mms 80 g (2.822 oz)
Cms 0.33 mm/N
BL 11.5 T•m
Qts 0.41
Qes 0,43
Qms 5.1

General

Weight 3.04 kg

Dimensions

APS 8 R
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 reflex enclosure
    starting from 8.5 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 excursion conditions.
  • Water-repellent pressed paper 8 in. cone featuring a profile developed
    with FEM simulation and optimized with the Klippel Scan Vibrometer.
  • Specifically developed to be combined with either the Audison AF C8.14 bit
    (2 CH bridged) or AF C4.10 bit /AF C4D / AF M4D (2 CH bridged) amplifiers.
  • Steel mesh grille and plastic gasket included.

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