The VHD2.16 double 15″ subwoofer is a development of KV2 Audio’s ES 2.5 design that has become a standard for compact, high output subwoofer devices. Acoustical design is based on extreme loading of asymmetrical chambers delivering exceptional output and control. The cabinet is built to the same robust standards as the VHD4.18 and delivers output in excess of 140dB when configured in a pair. It also functions as a very effective upper bass cabinet when used alongside the ultra low frequency VHD1.21 or 2.21 subwoofers as part of a five way active system.

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The new VHD2.18J is a direct radiating bass-reflex speaker containing two 18” high performance transducers. These 18’’ transducers are designed to withstand very high power levels. The optimised, high efficiency, bass-reflex design of the VHD2.18J produces considerably more output than other similar double 18” enclosures. Constructed of Baltic Plywood, integrated proprietary Flyware allows for fast rigging of multiple cabinets when they are needed to be flown. An ideal subwoofer for any application where direct radiating bass speaker reproduction is required.

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The VHD4.18 is a quad 18″ subwoofer system, comprising of four individual loudspeaker cabinets. The objective is to make the system easy to transport and setup. When assembled, the VHD4.18 system becomes a high efficiency neodymium subwoofer system with immense output. The system was designed with very high sensitivity in mind; it provides 110 dB at 1W/1m and a tremendous output of 149dB when running at full power Each cabinet incorporates a large port area that becomes an optimized horn aperture when all four cabinets are stacked together. The quad 18″ subwoofer system delivers extreme output and controlled low frequency resolution.

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The VHD2000 is the control and amplification unit for the VHD2.0. It is a three-way, rack-mounted unit containing high frequency, mid frequency and mid-bass amplifiers. It also houses all processing and control electronics for the subwoofer system. Our own hybrid signal processing utilises the very best technology available from both the analogue and digital worlds, to offer complete audio system control, equalisation, overdrive protection, thermal protection and user adjustable set up parameters. Time alignment and phase correction is done via KV2’s new 20MHz digital delay line, boasting the highest sampling rate of any digital speaker processor available. Once the set-up process is completed, the VHD2000 manages all system functions and assures optimal performance.

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Power for the VHD subwoofers is provided by the VHD3200 rack mounted subwoofer amplifier. The unit contains two separate 1600W amplifiers with individual power supplies, signal paths and I/O within a single four rack space chassis. The unit acts as a slave for the VHD2000, which provides audio and control signal, and also functions in the same way for expansion of an ES series system, taking its feed from the external subwoofer output on an EPAK2500R or an ESR/SL3000 amplifier. The 3200 amplifier can also run in bridge mode for maximum bass output driving a single VHD2.21 sub.

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The VHD3200D is a rack mounted subwoofer amplifier. The unit contains two separate 1600 watt amplifiers with individual power supplies, signal paths and inputs and outputs within a single four rack space chassis. The unit can be used in bridged mode to provide full power for one channel mode. The unit acts as a slave for the VHD2000D, which provides audio and control signal. It can also be used with the EPAK2500/R when used in combination with KV2 Audio ES systems and power the associated ES subwoofer systems. The VHD3200D is now configurable remotely using KV2 Control and Diagnostics Tool.

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When multiple low mid drivers are arrayed on a single axis they sum providing a considerable increase in the amount of low mid energy present and available in the 200Hz to 500Hz range. A lot more energy is needed in this area than in the higher frequency ranges so this summing effect helps deliver headroom in the system and keeps the overall sound balanced. To provide the required energy in the low mid, needed to cover very large audiences KV2 developed the VHD8.10 Low Mid Expansion Box. This enclosure carries a further 8 front‑loaded ten inch speakers and 3 of these cabinets are added to each VHD5. 0. This provides a total of 32 ten inch speakers giving the extra headroom needed in the low mid band and extended projection of these frequencies over distance.

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Continuing KV2 Audio’s current technology statement through Constant PowerPoint Source Array design, VHD5.1 is a dedicated downfill performance enclosure and integral to the VHD5.0 system for the largest of events to audiences from 10,000 upwards without requirement for additional delay systems.

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Active control and amplification unit specifically designed in conjunction with VHD5000S for powering the VHD5 loudspeaker system. The VHD5000 is equipped with many features for easy large scale speaker system use. It features all signal processing, crossover and speaker system protection. All signal processing is executed with KV2 Audio Super Audio Analog circuitry and utilize KV2’s industry leading 20MHz sampling for on board time alignment and phase correction for maximum audio quality. The VHD5000 is equipped with multiple delay lines, wideband delay line for VHD5 system delay, ll output delay and two low frequency delay lines for subwoofers.

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