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CONTROLS.
Front panel.
1.
VOLUME
control of channel
B
. Determines the volume level of DRIVE
channel.
2.
VOLUME
control of channel
А
.
Determines the volume level of CLEAN
channel.
3.
Channel
А
CLEAN indicator.
4.
BASS
control of channel
A.
Sets the low-frequency range of CLEAN
channel.
5.
MIDDLE
control of channel
A.
Sets the mid-frequency range of CLEAN
channel.
6.
TREBLE
control of channel
A.
Sets the high-frequency range of CLEAN
channel.
7.
GAIN CR
switch for step change of tube driver frequency
characteristics of B channel (DRIVE) in CRUNCH mode.
8.
GAIN CLEA
N
control of channel A. Sets the sensitivity level of CLEAN
channel.
9.
GAIN LEAD
control of
B
channel. Sets DRIVE channel sensitivity level
in LEAD mode.
10.
В
channel DRIVE indicator in
LEAD
mode.
11.
GAIN CRUNCH
control of
B
channel. Sets DRIVE channel sensitivity
level in CRUNCH mode.
12.
CRUNCH / LEAD
footswitch for switching between CRUNCH and
LEAD modes in DRIVE mode.
13.
В
channel DRIVE indicator in
CRUNCH
mode.
14.
TREBLE
control of channel
B.
Sets DIVE channel high-frequency
response.
15.
MIDDLE
control of channel
B.
Sets DRIVE channel mid-frequency
response.
16.
BASS
control of channel
B.
Sets DRIVE channel low-frequency
response.
17.
CHANNEL A / CHANNEL B
footswitch for switching between CLEAN
and DRIVE channels.
18.
Top tube protective cover.
19.
B
DRIVE channel indicator.
Rear panel.
20.
INPUT
for guitar connection.
21.
DC 12V
jack for power adapter connection.
22.
OUT CAB.S.
for connection to Line input of mixing console.
23.
RETURN
input for connection of external effect unit (-10dB).
24.
SEND
output for signal sending to external effect unit (-10dB).
25.
OUTPUT
to amplifier.
26.
Bottom cover of the guitar preamp.
WARNING! All cable connections must be made ONLY WITH
GUITAR PREAMP SWITCHED OFF!
For qualified personnel only.
DANGER! High voltage!
Even after disconnection from mains the internal
circuits can be up to 500 Volts live. In order to avoid
electric shock you must not remove the cover the rear
panel of the device. There are no user serviceable parts
inside. Repair of the device can be carried out only by qualified
experts. If the device is not used it must be disconnected from
mains.
The preamp circuitry is powered by high-tension current.
To avoid damages or injuries caused by fire or short-
circuit do not let any foreign objects or liquids inside the
device.
Tube replacement.
Tube replacement procedure:
1.
Remove top tube protective cover (18) by unscrewing 4 (four)
fastening screws.
2.
Снять
нижнюю
крышку
гитарного
предварительного
усилителя
(
поз
.16)
открутив
4 (
четыре
)
крепёжных
винта
.
3.
Remove bottom cover of the guitar preamp (16) by unscrewing 4
(four) fastening screws.
4.
Remove
old
tube.
5.
Replace it with new tube.
6.
Replace bottom cover and top tube protective cover of the guitar
preamp.
For replacement use only the tubes recommended by the manufacturer.
AUDIO CONNECTIONS AND SWITCHING.
WARNING! All cable connections must be made ONLY
WITH GUITAR PREAMP SWITCHED OFF!
The diagram of possible audio connections of the preamp with external units
