Audiofocus advertising S21a, active subwoofer

Audiofocus advertising S21a, active subwoofer

Equipped with one powerful specific 21’’ B&C neodymium driver with 4,5’’ voice coil powered by a built in Powersoft amplifier with DSP on board. The amplifier is able to deliver about 270Vpeak/4ohms which represents a short term headroom of about 6dB spl higher than than any other compact shape sub on the market.

AUDIOFOCUS state-of-the-art T-ligned + reflex design subwoofer delivering exceptional sensitivity reaching 142dB max SPL at 35 Hz and 145dB SPL at 50Hz.

Its compact size and integrated rigging makes it extremely well suited for flown coupled configurations. For easy wiring, the S21 provides additional connectors on the front grill for cardioid and end fire setup.

Perfect companion for ARES12 line array and FR-X series

Spécification	S21
Type	Vented T-ligned - Passive/Active
Nominal Impedance	Passive: 8Ω
Power handling RMS / Peak	Passive: 1500W RMS / 3000W Peak Active: 3500W RMS / 11550W Peak*
Frequency range @-3dBspl	Passive: 40 Hz - 500Hz Active: 30 Hz - 100 Hz (extended preset)
Sensitivity spl 2πsr	102 dB
SPL@ Peak power	Passive: 135,7 dB Active: 142 dB / 145 dB
Components	21" LF B&C Custom made, 4,5" Voice coil
Line Connectors	Active: Balanced 1 x IN, 1 x OUT Neutrik© XLR
Front connection for Cardio	Active: powerCON and XLR IN OUT Passive: speakON 4 or speakON 8 IN OUT
HP Connectors	Passive: 2x Neutrik© speakON linked
Construction	Birch marine Plywood 15 & 24 mm
Finish	High resistant Polyurea coating
Dimensions (h x w x d)	590 x 750 x 655 mm 23,22’’ x 29,52’’ x 25,78’’
Weight	Passive: 58 kg / 128 lb Active: 60 kg / 132 lb
Mounting accessoiries	M20 screw & 35 mm compatible flange

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