Description, Vhd p reamp, Description 3 – KV2 Audio VHD-Preamp User Manual

Page 3: Microphone preamplifier stereo preamplifier, Output b, Output a, Mic. input, Unbalanced input, Bal. input right bal. input left

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VHD P

reamp

Description

Description

3

Block diagram

Basic Description
The VHD Preamplifier is a Very high definition, 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 preamplifier. The microphone channel features phantom power,
four band equalization and a variable high pass filter.
The VHD Preamplifier 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.

Front panel

Rear panel

GAIN

0

+55 dB

+6 dB

48V

ON

CLIP

-20dB

MICROPHONE

HIGH PASS

BASS

LOW MID

HIGH MID

TREBLE

VOLUME

10 Hz

500 Hz

100 Hz

+6 dB

+30 dB

LINE

-10dB

CLIP

GAIN

BASS

TREBLE

VOLUME

BAL

UNBAL

INPUT

OUTPUT

SELECT

A

B

-6 dB

+6 dB

0 dB

-6 dB

0 dB

00

0

-20 dB

+6 dB

00 0

dB

-20 dB

-15 dB

+15 dB

0

-12 dB

+12 dB

0

-12 dB

+12 dB

0

-15 dB

+15 dB

0

POWER

TECHNOLOGY

VERY HIGH

DEFINITION

PREAMP

WARNING:

TO REDUCE THE RISK OF ELECTRIC SHOCK

DO NOT REMOVE THIS PANEL OR ANY ATTACHED
COMPONENTS. NO OPERATOR SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ONLY. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

SERIAL NUMBER

AC IN

100 - 240 VAC, 50/60 Hz
MAX 30WATTS

KV2 AUDIO, MANUFACTURED IN THE EUROPEAN UNION,

WWW.KV2AUDIO.COM

RIGHT

OUTPUT B

A/B CONTROL

LEFT

RIGHT

OUTPUT A

LEFT

RIGHT

RIGHT

LEFT

BAL. INPUT

UNBAL. INPUT

MIC. INPUT

LEFT

LEFT

STANDBY
MUTE

LINE DRIVER

OUTPUT B

RIGHT

LINE DRIVER

LEFT

STANDBY
MUTE

LINE DRIVER

OUTPUT A

RIGHT

MIC. INPUT

PREAMPLIFIER

EQUALIZATION

HIGH PASS FITER

HIGH PASS

GAIN

CLIP

CLIP

BASS

BASS

LOWMID

HIMID

TREBLE

TREBLE

LMID

HMID

UNBALANCED INPUT

LINE DRIVER

48 V

-20 dB

PREAMPLIFIER

-10 dB

LEFT

RIGHT

MIXER

OUTPUT SELECT

OUT. SEL.
DRIVER

A/B SELECT

INPUT

GAIN

BAL. INPUT
RIGHT

BAL. INPUT
LEFT

EQUALIZATION

BASS

BASS

TREBLE

VOLUME

TREBLE

LMID

HMID

VOLUME

Microphone preamplifier

Stereo preamplifier

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