KV2 Audio VHD 2000 Operator's Manual - Using The System
USING THE SYSTEM
The VHD 2000 is designed to actively power one VHD 2.0 cabinet and to provide
signal processing for associated subwoofer systems when used. For Normal Mode
operation signal is applied to the ‘Main Input’ connector and all the ‘Insert’ switches
would be in the ‘Disengage’ position.
The Input Impedance control should be set to match the output impedance of the
device feeding the VHD 2000. If you are using a KV2 Audio LD4 Line Driver then the
Input Impedance control on the VHD 2000 should be set to 50Ω. If when using the
LD4 you are feeding more than one VHD 2000 then they should all be set to 10kΩ
with the last one in the signal chain set to 50Ω. Should you find that once the Input
Impedance control has been set there is not enough input signal going into the VHD
2000 (by looking at the Input metering) then there are two settings that give you
+6dB extra gain on the input.
Six different combinations of sub woofers are accommodated for when using the
VHD 2000. The associated ‘Sub-A Set Up’ and ‘Sub-B Set Up’ switches are set
according to which combination is being utilised on the Sub-A and Sub-B outputs.
Both switches must be set to the same setting. These outputs are then fed from the
‘Sub-A Out’ and ‘Sub-B Out’ connectors into VHD 3200 amplifiers that power the
subwoofers themselves. The six different combinations are as follows:
4
4.1 NORMAL SET UP
Amplifier / Controller Setting
Setting 1
Setting 2
Setting 3
Setting 4
Setting 5 (Double System)
Setting 6 (Double System)
Sub-A Out
1 x VHD 2.15
2 x VHD 4.18
1 x VHD 2.15
1 x VHD 2.15
2 x VHD 2.15
2 x VHD 2.15
Sub-B Out
1 x VHD 2.15
2 x VHD 4.18
2 x VHD 1.21
2 x VHD 4.18
4 x VHD 4.18
4 x VHD 1.21
Main Signal
Input
All insert
switches in
‘Disengage’
position
Both Sub Set Up Switches
on front panel at
position 3 for VHD 2.15
& 2x VHD 1.21
VHD 2.0
VHD 2.15
VHD 1.21
VHD 1.21
NOTE: Settings 5&6 require 2 x VHD3200 amps