The SUB221-C-amp is a high power compact cardioid subwoofer cabinet designed to allow an high attenuation between front & rear faces. Equipped with two 21-inch ND drivers. One driver is placed in a front direct radiating position and a second in a rear sidefacing position to create a bandpass configuration. 

Key features 
  • Self powered
  • 2 x 21" inch low frequency driver
  • 30Hz cut-off frequency
  • Optimal LF coupling
  • PC remote controlled

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Frequency response (1):  30Hz - 120Hz

Maximum SPL peak (2):   140dB


Low frequency :   2x 21" ND ferrofluid cooled, long excursion, low distortion cone driver


Output power (low1) (5):   1'250W RMS

Output power (low2) (5):   1'250W RMS

THD, DIM, SMPTE:   <0,05%

Audio Input 

Type:   Analog Differential balanced input circuit

Connectors:    Female XLR; Male XLR loop

Nominal impedance:   10K Ohm

AC Power 

Connectors:   Female PowerCON TRUE1, in; Male PowerCON TRUE1 loop

Input voltage:   115V - 230V nominal +/- 10%


Sampling rate:   96 Khz

Basic delay:   0.76 ms

Dynamic range:   115dB

Remote / Network 

Type: PC and PodWare Software

Connectors:    RJ45 female, RJ45 loop


Cabinet Size (WxHxD):   778 x 596 x 1'200mm

Cabinet finish:   Black epoxy painted

Rigging:   Optional

Protective grill:   Removable perforated 1,6mm steel, foam cover inside

Weight:   105Kg

(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