Bosch GML 20 Professional Original Instructions Manual page 22

OBJ_BUCH-1181-001.book Page 22 Monday, March 1, 2010 12:07 PM
22 | English
Operation
Protect the construction site radio against
moisture and direct sunlight.
Audio Operation (see figures B and C)
Switching Audio Operation On/Off
To switch on audio operation (radio and exter-
nal playback devices), press the On/Off button
26. The display 27 goes on and the last set audio
source after switching off is activated.
When the construction site radio is in the energy
saving mode (see "Energy Saving Mode",
Page 25), press the On/Off button 26 twice to
switch on audio operation.
To switch off audio operation, press the On/Off
button 26 again. The current audio source set-
ting is stored.
Adjusting the Volume
To increase the volume, turn the "Volume" 25 ad-
justment knob clockwise; to reduce the volume,
turn the adjustment knob anticlockwise. The vol-
ume setting (value between 0 and 20) appears
for a few seconds in indicator d on the display.
Before adjusting or changing a radio station, set
the volume to a lower setting; before starting an
external audio source, set the volume to medium.
Adjusting the Sound
An equalizer is integrated in the construction
site radio for optimal sound reproduction.
The treble and bass setting can be manually
changed or sound pre-sets for various music
styles can be used. The following pre-pro-
grammed settings are available: "JAZZ",
"ROCK", "POP" and "CLASSICAL" apart from
the individually programmable setting "CUS-
TOM".
To select one of the stored sound pre-sets,
press the "Equalizer" button 15 until the de-
sired setting is indicated in indicator a on the
display.
1 609 929 W27 | (1.3.10)
Changing the "CUSTOM" Setting:
– Press the "Custom" button 17 once. The
"BAS" indicator c flashes on the display and
the stored bass level flashes in indicator d.
– Set the desired bass level (value between 0
and 10). To increase the bass level, turn the
"Bass/Treb" adjustment knob 25 clockwise;
to reduce the bass level, turn the adjustment
knob anticlockwise.
– To store the set bass level, press the "Cus-
tom " button 17 a second time. The "TRE" in-
dicator b flashes in the display for the follow-
ing treble adjustment, and the stored treble
value flashes in indicator d.
– Set the desired treble level (value between 0
and 10). To increase the treble level, turn the
"Bass/Treb" adjustment knob 25 clockwise;
to reduce the treble level, turn the adjust-
ment knob anticlockwise.
– To store the set treble level, press the "Cus-
tom" button 17 a third time.
Selecting an Audio Source
To select an audio source, press the "Source"
button 22 until indicator m for the desired inter-
nal audio source (see "Setting/Storing Radio
Stations", page 23) or external audio source
(see "Connecting External Audio Sources",
page 23) appears in the display:
– "FM": FM radio,
– "AM": AM radio,
– "AUX 1": External audio source (e.g. CD
player) via the 3.5 mm socket 28 on the side,
– "AUX 2": External audio source (e.g. MP3
player) via the 3.5 mm socket 35 in the digit-
al media bay,
– "USB": External audio source (e.g. USB
stick) via the USB port 33,
– "SD": External audio source (SD/MMC card)
via the SD/MMC slot 34.
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