Siemens 2000 Service Manual

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Switching on amplifier
Switch on amplifier by means of masterswitch a (Fig. 2 a). The amplifier is ready
for
service after a warm-up period of approx . 30 sec .
Fig. 8 Portable loud s peaker
Fig. 9 20- watt loudspeaker combination
Loudspeaker connection
Connect loudspeaker to amplifier output p (Fig. 2 b).
For sound
film projection in very large rooms with poor acoustic conditions ,
the 20-watt
loudspeaker combination SI. L 6.4 (Fig. 9) should be used. The units
should be placed side by side and angled for any desired direction of projec-
tion, or located separately at each side of the projection screen for sound
projection with spreading effect.
For
large auditoriums and theatres up to approx. 1,000 seats, the 15-watt port-
able loudspeaker SI. L 6.1 (Fig. 8) should be employed, and for auditoriums and
theatres
of medium size for an audience of up to 700, the tweeter-woofer loud-
speaker system SI. L 6.2 (Fig. 8) should be chosen. The connecting lead is
coiled up inside the case.
As a nonperforated projection screen is generally used for 16 mm film in order
to avoid loss of brightness, the loudspeaker should be placed close to the side
of the screen and, where possible, on the same level as the screen.
The volume can be increased by opening up rear of loudspeaker case (Fig. 8)
and lifting it out sideways.
The amplifier may also be operated in connection with a 50-watt power stage
and a loudspeaker array.
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Siemens 2000 Specifications

General

Brand	Siemens
Model	2000
Category	Projector
Language	English