🇬🇧 Kv2 Audio VHD4.21 ☎️Call for Quote


VHD4.21 Active Passive Bass Module

What is Power without Control. In developing one of the most powerful subwoofer solutions in the world today, our already successful VHD2.21 2x21" subwoofer has evolved to incorporate a revolutionary new Subwoofer Amplifier design, unique to KV2 and featuring  Ultra High Current delivery, Immense Power, Exceptional Control, coupled with a class leading 'Green Efficiency' low consumption power supply. Housing two newly developed large format 21" Woofers the VHD4.21 Active can power an additional Passive VHD4.21 and deliver up to 14,000 Watts of peak power whilst being plugged in to a standard 16A wall socket. The VHD 4.21 is a truly Amazing product and demonstrates the Pinnacle of KV2's Pioneering Subwoofer technologies.


System Acoustic Performance

Max SPL Long-term 147dB
Max SPL Peak 150dB
-3dB Response 34Hz - 180Hz
-10dB Response 28Hz - 240Hz
Crossover Point 60Hz to 120Hz

Low Frequency Section

Acoustic Design Bandpass with low port losses
Woofer Size / Voice Coil Diameter / Design 4x 21" / 5.3"
Diaphragm Material Epoxy Reinforced Cellulose with Carbon Fiber and Double Surround
Magnet Type Neodymium Advanced Ventilated

Low Frequency Amplifier Specification

Type Direct power switching amplifier
Rated Continuous Power 3500W
Short Term Power 14000W
Distortion <0.05%

Signal Input

Input Sensitivity 1.55V RMS
Input Impedance 20 kΩ

Power Requirements

Power Connector Neutrik PowerCon® 32A
Operating Voltage 180V - 260V @ 50Hz | 60Hz
Recommended Amperage 16A


Cabinet Material Baltic Birch
Handles 12
Color Black or any RAL

Physical Dimensions

Height 700mm (27.55")
Width 1080mm (42.52")
Depth 1200mm (47.24")
Weight (Active) 175kg (386lbs)
Weight (Passive) 155kg (342lbs)

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