DB Technologies DVA S1521N Active Subwoofer, 21“

Db Technologies


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 Active single 21” Neodym Subwoofer, Bassreflex Clamshell Design, Birchwood Housing, DigiPro 1500 W/RMS amp,RD Net, PFC.Switchmode-Supply, active X-over with switchable crossover frequency , XLR-Input, XLR-Paralell-Output, Neutrik PowerCon incl. Slave-Out. Blue Wheels can be optionally fitted. 30 – 110 Hz, 139 dB SPL peak. Dimesions: 43.5" x 23" x 29", Weight: 159 lbs The DVA S1521N is a powered 21“ subwoofer housed in a bass reflex enclosure that we tuned for accurate, ultra low-frequency response. It readily integrates into large DVA and DVX Series PA systems as a sub-bass unit or as a stacked subwoofer. Made of durable birch multiplex covered in robust black textured lacquer, the high-quality housing provides six carrying handles, an M20 pole mount, and bushings on the rear panel that accept casters. Pick-points for attaching DRK-10 and DRK-20 harnesses are built into the top panel to enable easy, safe stacking.

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Technical data

Speaker Type Active Bassreflex-Subwoofer

Acoustical data

Frequency Response [+/- 3dB] 30 - 110 Hz
Max SPL 139 dB
Directivity Omnidirectional, Cardiod Option with DSP setup
LF 21 "
Type LF RCF Neodymium
Voice Coil LF 4.5 "


Amp Technology digipro
Amp Class Class D
Power Supply 1.5 kW SMPS
LF Amp 1500 W/RMS
Cooling Convection


Controller DSP 56 bit
AD/DA Converter 24bit/ 96 kHz
System Presets X-Over
Phase 0, 180 °
Limiter RMS, Peak, Thermal
Delay Option 0-4.5 ms internal
Crossover Frequency LF-MF DSP, steps of 5 Hz
Slope LF-MF 24 dB/Octave

Input Section

Signal Input 1x XLR fem, sym.
Network RDnet, 2x RJ45
Signal Output 1x Link XLR, male, sym
1x X-Over Out, XLR male, sym.
Power Socket Powercon In/Out
Voltage Range 90 - 240 V


Housing Multiplex birch plywood
Housing Design Rectangular
Color Black
Surface Texture Textured acrylic lacquer
Handles 3x Per Side
Pole Mount M20
Front Grille 1.5mm metall grille
Rigging Points 2xM10 on top to fix DRK10/20 rigging frames
Flytracks No
Castors Optional
Width 580 mm (23.2 in)
Height 800 mm (32 in)
Depth 720 mm (28.8 in)
Weight 52.5 kg (115.74 lbs)