KV2 Audio KVV 987 113 User manual

User Guide
VHD Preamp
The Future of Sound.
Made Perfectly Clear.
At KV2 Audio our vision is to constantly develop technologies
that eliminate distortion and loss of information providing
a true dynamic representation of the source.
Our aim is to create audio products that absorb you,
place you within the performance and deliver a listening
experience beyond expectations.
Very High Denition Dual Output Preamp
with built - in Line Drivers

VHD Preamp · Important Safety Instructions
Important Safety Instructions
Observe all instructions and follow warnings marked on the equipment and in the user's manual.
Connect the equipment only to a source of proper mains voltage.
Do not attempt to switch on any equipment that has been dropped, that is damaged, or has had liquid penetration,
or if malfunctions have occurred and their nature requires a repair action. The supply cable shall be made by
a person having proper qualications.
Warning
The equipment is designed in Class I and shall be connected to a wall socket having protective earthing.
The mains plug and supply cable shall remain easy accessible, as this is used for disconnection of the equipment from the
supply source if necessary.
Never interrupt earthing due to safety reasons.
Do not place the equipment close to heating bodies or other sources of heat and protect it against direct sunlight.
The equipment must not come into contact with open ames.
Ventilation of the equipment must not be obstructed by covering of ventilation openings.
The equipment must not be exposed to dripping or splashing liquid or water and excessive humidity.
Any object lled with any liquid shall not be placed on the equipment.
Basic description
The VHD Preamplier is a Very high denition, small stand-alone microphone and stereo inputs signal mixer. Primarily built
for high quality, easy presentation and comparisons of two individual systems using the same source, the applications for this
mixer are comprehensive and extremely useful. The VHD Preamp features a stereo pair of balanced line inputs, stereo RCA
phono connectors, and a very high quality VHD microphone preamplier. The microphone channel features phantom power,
four band equalization and a variable high pass lter. The VHD Preamplier also features two switchable A or B outputs, to
allow a simple comparison of systems between the two outputs. Both A and B outputs have line drivers built into them to
maintain audio signal integrity over long cable lengths.
The triangle with a symbol of a lightning marks parts of the equipment under life jeopardizing
voltage, whose values may cause an injury from electric shock.
The symbol indicating that the equipment is manufactured in compliance with EU standards.
The triangle with a symbol of an exclamation mark in the text marks important instructions
for operation, setting and maintenance.
VHD Preamp · Important Safety Instructions

VHD Preamp · Contents
Introduction 3
Introduction 3
Dimensions 3
Using the system 4 - 6
Demonstration / presentation mixer 4
Simple AV mixer-Projector sound and a microphone 5
Replacement FOH mixer 6
Specications 7
Block Diagram 8
Warranty · Service 9
Contents
VHD Preamp · Contents

VHD Preamp · Introduction
Introduction
• Very high denition, small stand alone mixer
• Stereo pair of balanced line inputs, stereo RCA phono connectors, and a very high quality VHD microphone
preamplier
• The microphone channel features phantom power, four band equalization and a variable high pass lter
• Switchable A or B outputs
• Both A and B outputs have line drivers built into them to maintain audio signal integrity over long cable lengths
VHD Preamp - part number KVV 987 113 (230V, 115V)
Front Panel:
Rear Panel:
Dimensions
Application
Especially designed as a super high quality preamplier
to allow A/B comparisons and presentations between
products and systems
• Fixed installations
• Sub mixing
• Portable
• Demonstrations/presentations
3
VHD Preamp · Introduction
VERY HIGH
DEFINITION
PREAMP
Side Panel:
207,2 mm
200,5 mm

VHD Preamp · Using the system
Demonstration / presentation mixer
4
VHD Preamp · Using the system
Two sound systems comparing
System B System A
VHD Preamp Rear view

VHD Preamp · Using the system
Simple AV mixer-Projector sound and a microphone
Sound system
VHD Preamp Rear view
5
VHD Preamp · Using the system

VHD Preamp · Using the system
Replacement FOH mixer
6
VHD Preamp · Using the system
Replacement mixer for FOH when the main system is being taken down after a concert. Many venues now insist that at least
one pair of speakers and a mixer/mic is kept available during breakdown.
Main system - PA (A) Main system - PA (A)
VHD Preamp Rear view
Replacement PA (B) Replacement PA (B)

VHD Preamp · Specications
Specications
System Acoustic Perfomance
-3dB Response 10Hz to 50kHz
Total Harmonic Distortion <0.0005%
Output Channels
Number of Channels 2
Max. Output Voltage 14V / 7V (50Ω) RMS
Max. Output Current 450mA
Signal Input
Input Channels 5
Input Impedance 2kΩ Mic / 20kΩ Balanced IN / 10kΩ RCA IN
Mic input Phantom power, -20dB, Input level
Line input RCA/Balanced, 2 band EQ, -10dB
Signal Output
Output Channels stereo A / stereo B
Output Impedance 50Ω
Features
High Pass Filter 10Hz to 500Hz
Equalization 4-band EQ
Power
Power Connector IEC 320
Operating Voltage Range 100 to 250V@50 to 60Hz
Physical Dimensions
Height 44.5 mm (1.75")
Width 483 mm (19.0")
Depth 177.8 mm (7.0")
Weight 2.5 kg (5.5lbs)
7
VHD Preamp · Specications

VHD Preamp · Block Diagram
Block Diagram
8
VHD Preamp · Block Diagram

VHD Preamp · Warranty · Service
Warranty
Your VHD Preamp is covered against defects in material and workmanship.
Refer to your supplier for more details.
Service
In the unlikely event that your VHD Preamp 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 qualied technical personnel.
If the unit needs to be shipped back to the factory, it must be sent in its original carton. If improperly packed, the unit may be
damaged.
To obtain service, contact your nearest KV2 Audio Service Centre, Distributor or Dealer.
9
VHD Preamp · Warranty · Service

KV2 Audio International
Nádražní 936, 399 01 Milevsko
Czech Republic
Tel.: [phone]
Email: [email protected]
www.kv2audio.com
KVV120031-00-03-0
The Future of Sound.
Made Perfectly Clear.