Powered Subwoofer

P/N. 10429240



Active direct radiating rear-loaded subwoofer system
1 x 21″ DAS 21LFN neodymium loudspeaker
3200Wpeak – 1600 Wcontinuous
Class D amplifier and digital signal processing (DSP)
Two balanced inputs with stereo filtered output connections
Variable low-pass filter 63 Hz-100 Hz
Top located pole mount socket for TRD-6 optional pole mount
Rear located wheels to ease transport
Top grade Birch cabinet construction
Durable ISO-flex finish


House of worship
Theatres, auditoria and performing arts centers
Live music clubs
Corporate A/V
Live sound touring/Rental services

The EVENT-121A is a direct radiating rear-loaded powered subwoofer system which incorporates a single 21″ neodymium loudspeaker providing “earth-moving” low-frequency reproduction for the EVENT Series line arrays. The combination of direct radiation and rear-loading provides a high output, tight and accurate sub-bass response.

The EVENT-121A employs the new DAS 21LFN loudspeaker which offers impressive features such as a 4″ sandwich split winding voice coil, a powerful FEA optimized neodymium magnet assembly and a FEA optimized suspension system with double silicon spider. The result is a loudspeaker with exceptional sensitivity, high power handling capacity and a quality suspension design capable of withstanding the stress and mechanical fatigue of today´s high-power pro audio systems. An aluminum demodulating ring benefits lower distortion and effective forced ventilation of the voice coil gap provides for a high thermal rating, and reduced power compression.

The EVENT-121A electronics package includes a 3200 Wpeak Class D amplifier and 24-bit high-end DSP for top quality audio reproduction. On the rear panel, controls can be found for gain, polarity and a continually variable low-pass filter which ranges from 63 Hz to 100 Hz. A unique “cardioid preset” button simplifies the use of subs in cardioid configurations, making setup of two to three units a snap without the need for an external DSP. The EVENT-121A is phase response coherent with the EVENT-208A, EVENT-210A and EVENT-212A active tops offering precise alignment. Two balanced inputs with stereo filtered outputs which can be switched to pass-through connections are provided.

Frequency Range (-10 dB)30 Hz – 125 Hz
Maximum Peak SPL at 1 m141 dB
Electronics and Connectors
Nominal Amplifier Power (continuous)1600 W
Nominal Amplifier Power (peak)3200 W
Input TypeBalanced
Input Impeadance20 kohms
Input Sensitivity6.2 V (+18 dBu)
Audio Signal Input Connector2 x Female XLR
Audio Signal Loop Thru Connector2 x Male XLR
AC Input ConnectorpowerCon NAC3FCA
AC Output ConnectorpowerCON NAC3FCB
Operating Range90-250 VAC
Current Draw 115 V7.2 A
Current Draw 230 V3.6 A
Enclosure ConstructionBirch Plywood
Enclosure GeometryRectangular
RiggingM10 Rigging Points
FinishISO-flex Paint
Dimensions ( H x W x D )965 x 740 x 755 mm
38,0 x 29,1 x 29,7 in
Net Weight78,5 kg ( 173,1 lb )
LF Driver21LFN
Carton Dimensions ( H x W x D )1.060 x 790 x 820 mm
41,7 x 31,1 x 32,3 in
Shipping Weight83,5 kg ( 184,1 lb )
Title Format Size
Data Sheet
HT_EV121A_01.pdf PDF 785 Kb
User Manual
UM_EV2_01_EN.pdf PDF 11.31 Mb
Line Drawing
LD_2D_EV121A.dwg DWG 1.09 Mb
LD_2D_EV121A.png PNG 69 Kb
LD_2D_EV121A.svg SVG 232 Kb
CAT_EVENT_01.pdf PDF 2.84 Mb
CAT_DAS_2020_FULL_LINE_7_2.pdf PDF 13.19 Mb


The new Event Line Arrays put the world acclaimed D.A.S. performance at your reach like never before. For portable live sound applications, or fixed installations in almost any type of venue, the Event Line Arrays have been designed to provide exceptional sound, steadfast reliability and value beyond comparison.

FUN-2-EV121Protective transport cover for 2 u. EVENT-121A on PL-EV121S, black
PL-EV121SWooden transport dolly for EVENT-121A (max 3 u.), black
TRD-6Ring lock pole mount 35 mm x 750 mm for use between satellite and sub system, black
TRD-735 mm ring lock adjustable height (1005 mm – 1485 mm) pole mount for use between satellite and sub systems, black
21LFNSub-low frequency 21″ speaker, 4″ VCD, neodymium magnet, 1100 W AES, 8 ohm
DSP-EVENT-121ASpare DSP for EVENT-121A
GM-21LFRecone kit for 21LF speaker
MP-EVENT-121AComplete power module for EVENT-121A