Yamaha EM1620 - Manual (Page 4)

OPERATION
FRONT PANEL CONTROLS
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POWER ON/OFF switch and indicator
The power switch is a push-button device. Press the
switch to turn the power ON or OFF. When the
power is ON (—•), the POWER indicator LED will
be lit. It is recommended that all volume controls be
set to their lowest levels before the power is
switched ON. This will prevent sudden power surges
to any external equipment.
INPUT CHANNELS
@ HIGH, MID and LOW EQUALIZER con­
trols
These three controls permit selective modification
of the frequency response for each channel. The
HIGH, MID, and LOW EQUALIZER controls have
the following characteristics:
Control Range Freq. Control
HIGH +15 dB 10 kHz Shelving
MID +15 dB 2 kHz Peaking
LOW +15 dB 100 Hz Shelving
@ EFFECTS control
The EFFECTS control determines the level of the
signal sent from the corresponding channel to the
EFFECTS mixing bus. At the bus, the EFFECTS
signals from all channels are mixed and fed to the
EFFECTS SEND control and the rear panel EFF
SEND jack. The EFFECTS control configuration is
factory preset to post-EQUALIZER/post-VOLUME.
As a result, the EFFECTS signal is directly depend­
ent on the settings of the channel EQUALIZER and
VOLUME controls.