The SUB3 is a high power compact subwoofer cabinet designed to extend the frequency range and power bandwidth of Audio Performance full-range loudspeaker systems. With a cut off frequency of 32Hz, the SUB3 is made for applications where the reproduction of sub frequencies is of importance (music, sound effects). It consists of two long excursion 15 inch ND cone drivers mounted in a heavily braced vented enclosure capable of accommodating up to 1'800W of power continuously. It operates as a complete system with the ALC48, controller. When stacking several cabinets is necessary, the direct radiating loading of the SUB3 provides the optimal use of the coupling effect to increase the low end sensitivity of a system. The enclosure is black epoxy painted. The front is protected by a heavy duty metal grill covered with charcoal grey foam.

Key features 
  • High power handling
  • 32Hz cut-off frequency
  • Processor controlled
  • Optimal LF coupling

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Frequency response (1):  32Hz - 150KHz

Power handling(4):   2x 900W (AES) 

Maximum peak SPL (2):   136dB


Low frequency:   2x 15" ND long excursion cone drivers, ferrofluid cooled

Nominal Impedance:  2x 8 Ohms

Connectors:   2x Neutrik Speakon, model NL4MP (wired in parallel)


Cabinet Size (WxHxD):   870 x 536 x 536mm

Cabinet finish:   Black epoxy painted

Protective grill:  Front metal grill covered with charcoal grey foam

Weight:   52,5Kg

Elements & Accessories 
  • SD2
  • SK-F
  • MP Series

(1) Frequency response: +/- 3dB, measured at 3 meters, on axis, half-space conditions -  MLSSA 1/3 octave

(2) Max peak SPL: Measured with music referred to 1 meter

(3) Crossover: Acoustical crossover frequency - at these frequency, transducers produce equal sound pressure level

(4) AES: Power handling is measured under AES standard conditions

(5) Power AMPS: Amplifier RMS output power per channel into 2 ohms, both channel driven