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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 AP8.9 bit or AP4.9 bit / AP4 D. 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

Size 200 mm
Power Handling - Peak 500 W
Power Handling - Continuous 250 W
Impedance 4 Ohm
Magnet Material HIGH DENSITY FLUX FERRITE
Voice Coil Ø 40 mm
Woofer Qes 0,43
Cone Material WATER REPELLENT PRESSED PAPER
Xmax 8.8 mm
Xmech 16.5 mm

Electric-acoustic Specs

D 173 mm
Driver Displacement Volume 0.67
Re 3.7 Ohm
Fs 32 Hz
Vas 26.5 l
Mms 80 g
Cms 0.33 mm/N
BL 11.5 T•m
Qms 5.1
Qts 0.41
Le Standard 1.45 mH
Spl 84 dB

General

Weight 3.04 kg

Dimensions

Dimension A 222 mm
Dimension B 187 mm
Dimension C 94.6 mm
Dimension D 79 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 AP8.9 bit
    (2 CH bridged) or AP4.9 bit /AP4 D (2 CH bridged) amplifiers.
  • Steel mesh grille and plastic gasket included.

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