KV2 Audio VHD2000 - Manual (Page 5)

INTRODUCTION, WARRANTY
Thank you for purchasing this KV2 Audio VHD2000 amplifier control unit. This user guide contains
important information on operating this unit correctly and safely. Please take some time and read
this manual to familiarise yourself with the advanced features of this unit.
The VHD2000 is the amplifier control unit for processing and powering one VHD2.0 mid-high
enclosure. It also houses all processing and control electronics for the associated VHD subwoofer
systems.
The VHD2000 is a three-way, rack-mounted unit containing high frequency, mid frequency and
mid-bass amplifiers. The unit features Class AB mosfet amplifiers for the high frequencies, with
transformer-balanced outputs, and Class H mosfet amplifiers for the mid frequencies. The mid-
bass amplifier is a new version of KV2 Audio’s high efficiency, analogue switch-mode amplifier
delivering 1600 Watts.
The VHD2000 is the world’s first loudspeaker control system with proprietary digital signal delay
technology using Super Digital pulse density modulation components providing a 20 MHz
sampling rate. The unit provides complete audio system control including equalisation, overdrive
protection, thermal protection and user adjustable set up parameters. Once the set-up process is
completed, the VHD 2000 manages all system functions and assures optimal performance.
The VHD2000 is “Line Driver Ready” and has its own input impedance selector on the front panel
to accurately match up the input impedance to the output of any mixer used. In most cases it
would be advisable to use a VHD LD4 line driver in addition at the mixer end to ensure that the
line to the amplifier is driven correctly and the signal integrity maintained.
Additional features include an electronic Tilt function which will electronically tilt the VHD2.0
mid-high cabinet down by 10 degrees. This is particularly useful where the physical placement of
the boxes is restricted relative to the intended area of coverage.
Although this unit is simple to operate improper use can be dangerous. This is a very high-
powered device that can put out high voltages and sizeable currents. Always use safe operating
techniques with the VHD2000.
FOR YOUR SAFETY , READ THE IMPORTANT PRECAUTIONS SECTION AS WELL AS THE INPUT,
OUTPUT AND POWER CONNECTION SECTIONS OF THIS MANUAL.
WARRANTY
Your VHD2000 is covered against defects in material and workmanship. Refer to your supplier for
more details.
SERVICE
In the unlikely event that your VHD2000 develops a problem, it must be returned to an authorized
distributor , service centre or shipped directly to our factory. Because of the complexity of the
design and the risk of electrical shock, all repairs must be attempted only by qualified technical
personnel.
If the unit needs to be shipped back to the factory, it must be sent in its original carton. If improp-
erly packed, the unit may be damaged. To obtain service, contact your nearest KV2 Audio Service
Centre, Distributor or Dealer .
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