Laboga AD 5300 User Manual page 10

10. Bass
Adjusts the low-frequency tone for
both channels.
11. Middle
Adjusts the middle-frequency tone for
both channels.
12. Treble
Adjusts the high-frequency tone for
both channels.
HINT: Set all the potentiometers in a
12.00 o'clock position, then adjust
them individually
sound. Remember,
frequencies of
related to each other, the change of
one influences the others.
13. Master Volume
Master volume control.
HINT: Besides controlling the volume,
it influences saturation of the clean
channel. Therefore, when turned down
to a lower level, a crunch sound can be
obtained on the clean channel.
14. Lamp indicator
When glowing, the amplifier in on.
HINT: There is a 12V bulb under the
cover, which can be unscrewed without
taking the chassis out. If the light
needs to be replaced, turn the amplifier
to get the best
that the
each controller are
off, unscrew the metal nut, gently push
the bulb in and turn left at the same
time until the bulb comes free from the
holder.
15. Stand By
In position "up" the amplifier is ready
to work. Changing it to positions "ON"
sends anode voltage to the tubes – in
these positions the amplifier plays.
HINT: You should keep the switch in
the "up" position if there are long
breaks between playing.
also wait about
switching the Standby to the "up"
position and turning the amplifier off.
16. Power
This switch turns the amplifier on and
off. The amplifier is off when the switch
is in position "up" – then the lamp - 24
is not illuminated.
The amplifier is on when the switch is
in position "ON"
illuminated in red. In this position the
amplifier does not play, but tubes are
hot, and you can change channels.
HINT: Before turning the amplifier on,
always make sure that the Standby
switch is in position "up" – it will
extend the life span of the tubes. The
amplifier should be turned on in the
following way: first, turn on the Power
switch and wait about 1 minute. Next,
you can turn the Standby on.
Turning off the amplifier works the
other way around.
Standby on, then wait about 1 minute,
afterward you can turn the Power off.
You should
1 min. between
– the switch is
First, turn the
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