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P21SUB - Brochure

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CAD Drawings

PDF Technical Drawing

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DWG Technical Drawing


21” Subwoofer

The P21SUB is a high performance quarter-wave loaded subwoofer system. extending the low frequency response of Nova’s PARIZ line-array and point source systems, in both permanent and portable applications. Featuring a state-of-the-art 21” Neodymium transducer, this subwoofer is designed to offer maximum, prolonged high impact SPL performance from a relative small footprint.For this, the latest materials and innovations have been applied: A very large displacement transducer with all-carbon fiber cone + dust cap, 5.3” voice-coil with vented triple-spider frame plus optimized low resistance impedance, and port-vented magnet structure to maximally reduce power compression.The extensively internally-braced cabinet features features double-tuned, high-pressure loading, through a rounded 236mm/9.3” diameter low-tuned bass-reflex vent and a wide, high-tuned quarter wave tunnel. This provides optimised breathing at high SPLs, yet keeping the total system weight to a minimum.

Slider feet on cabinet bottom and side enable stacking of multiple P21SUB’s into vertical LF arrays. The cabinet is constructed from plywood and is covered with weather and impact protecting Nova Polyurea Protection finish. The front of the loudspeaker is protected by a robust metal front grill with acoustically transparent foam. Each side includes two handles On top of the cabinet are cutouts for the P212. The acoustical and mechanical design enables the P21SUB to be used as a very powerfull subwoofer or extremly deep Infra Sub. The P21SUB is compatible to all P-Series and MF-Series fullrange, line array or mid/high cabinets. Ideal to use where very high SPL, deep and clear subwoofer performance is needed.


Double-tuned, quarter-wave loaded high-impact subwoofer system
21” woofer with all-carbon cone for high pressure loading
Large, rounded vent for improved breathing and low compression
Force-ventilated 5.3" voice-coil for low power compression prolonged performance
Outstanding performance at very high SPL
Matrix cabinet construction

Technical Data



Frequency Range (-10dB) 29Hz - 160Hz
Frequency Response (±3dB) 32Hz - 130Hz
Power Handling 1.800 W / 6400 W
(AES / Peak 10 ms) 
Maximum Peak SPL* 139 dB
System Sensitivity (1W/1m) 100 dB
LF Drivers 1x custom made 21" Neodymium Speaker, 5.3" VC
Nom. System Impedance 4 Ohms
Ext. Tuning HX8000 or NTX30 DSP
Enclosure 15/18 mm Baltic Birch Plywood
Transport 5 ergonomic handles
Finish Black NPP PolyUrea coating
Input Connectors 2 x Neutrik© Speakon© NL4, 1+/1-Input , 2+/2- Loop
Dimensions (WxHxD) 759 mm x 597 mm x 986 mm
Net weight 74 kg