VHD4.21 · Overview
Acoustic Components
The VHD4.21's woofer technology is based around high efficiency, high power woofer designs. The device features
high temperature polymide voice coil assemblies that undergo multiple baking and curing processes as well as
advanced magnetic structures with complex cooling systems. The woofer cones have been specially developed to
withstand the demanding environment created by the high acoustic loading inside the VHD4.21 chambers. The
VHD4.21 was designed using new concepts in twin asymmetrical acoustic chambers that deliver very high speaker
loading and output from a relatively small cabinet footprint. It is ideal for use in live applications that require
reproduction of low frequencies with very high transient content at high output levels.
Enclosure Design
The VHD4.21 Active Subwoofer Module consists of two purpose designed 'Low Loss-Band Pass' enclosures, one Active
and one Passive, with each enclosure containing two specific custom designed large format 21" woofers.
VHD4.21 · O
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