1: Controls And Connections; The Front Panel - Yamaha SPX900 Operation Manual

THE FRONT PANEL

Power ON/OFF Switch
Press to turn power ON, press
When the power is turned ON, the last program and
parameter selected will be automatically recalled.
Input Level Control
This control varies the input level of the input from
approximately -90 dB to +10 dB when the rear-panel
input level switch is set to +4 dB. and between
approximately -110 dB and -14 dB when the input level
switch is set to -20 dB.
PARAM
Key
Accesses the main effect parameters for each program.
Each time the PARAM key is pressed the next parameter
in the selected program's "parameter set" is called. It is
also possible to scroll backward through the parameter set
by using the SCROLL BACK key (7). Once the desired
parameter has been selected its value or setting can be
changed using the parameter
PARAM key is also used for cursor control (forward
cursor movement) in some utility functions.
Details under "THE PROGRAMS & PARAMETERS"
starting on page 9
LEVEL Key
Accesses the output level and balance parameters for
each program. Once the LEVEL key has been pressed,
both the LEVEL key and SCROLL BACK (7) key can be
used to select parameters. Once the desired parameter has
been selected its value or setting can be changed using
the parameter
and
Details on page 9
EQ Key
Accesses the digital equalizer or dynamic filter
parameters for each program. Once the EQ key has been
pressed, both the EQ key and SCROLL BACK (7) key
can be used to select parameters. Once the desired
parameter has been selected its value or setting can be
changed using the parameter
Details on page 9

1: CONTROLS AND CONNECTIONS

again
to turn power OFF.
and
keys (9). The
keys (9).
and keys (9).
INT PARAM Key
Accesses a special set of internal parameters for each
effect program. Once the INT PARAM key has been
pressed, both the INT PARAM key and SCROLL BACK
(7) key can be used to select parameters. Once the desired
parameter has been selected its value or setting can be
changed using the parameter
Details under "THE PROGRAMS & PARAMETERS"
starting on page 9
SCROLL BACK Key
When any set of parameters is selected – PARAM,
LEVEL, EQ, or INT PARAM – the SCROLL BACK
key can be used to scroll backward through the available
parameters while the PARAM (3), LEVEL (4), EQ (5) or
INT PARAMETER (6) key scrolls forward. according to
the parameter set selected. The preceding parameter in
the current set is selected each time the SCROLL BACK
key is pressed. The SCROLL BACK key is also used for
cursor control (backward cursor movement) in some
utility functions.
EXT CTRL ASSIGN Key
This key makes it possible to assign any parameters
(PARAM, LEVEL, EQ or INT PARAM) to external
controllers connected to the front-panel EXT CTRL/
FOOT VOL 1 and 2 jacks (19). These controllers can
then be used to control the assigned parameter in real
time. Yamaha FC7 Foot Controllers are recommended.
Details on page 8
and
Parameter Keys
These keys are used to change parameter values when
parameters are selected for editing (after the PARAM,
LEVEL, EQ or INT PARAM key has been pressed). The
and keys are also used to program several
parameter
UTILITY functions. The
briefly to change values in single steps, or held down for
rapid continuous incrementing or decrementing of the
selected value. While holding down either the
key. pressing the other key (
incrementing or decrementing process to be carried out
more rapidly.
and
keys (9).
and
keys can be pressed
or
or ) causes the
3