Yamaha SPX90 II - Manual (Page 22)

SAMPLE APPLICATIONS
MIDI KEYBOARD PERFORMANCE SYSTEM
In this system the SPX90II is connected immediately following a MIDI keyboard, and its output feeds either an instrument amplifier or sound reinforcement
mixing console. The MIDI OUT terminal of the keyboard is connected to the MIDI IN terminal of the SPX90II, permitting automatic selection of different effects
programs for specific voices selected at the keyboard. The SPX90II is under direct control of the keyboard player (rather than the mixing engineer) so he can
produce exactly the effects he wants for each voice or musical selection. In a multi-keyboard system the SPX90I1 could be patched into the effects loop of
the keyboard mixer. The MIDI keyboards could be chained together via the MIDI THRU terminals (MIDI OUT -► MIDI IN MIDI THRU
-* MIDI IN -+
MIDI THRU ->etc.) with the SPX90II MIDI IN terminal fed from the MIDI THRU terminal of the last keyboard in the chain. This way, all keyboards in the
system could be used for MIDI effect selection.
(SYSTEM DIAGRAM 1)
BASIC SOUND REINFORCEMENT SYSTEM
The SPX90II is an excellent addition to the small to medium size sound reinforcement system. Its input can be fed from either a mono effects send or auxiliary
send bus on the mixing console, and its stereo outputs can be fed back to the corresponding effects or auxiliary return inputs on the console. Assuming the
console used has independent effects or auxiliary send level controls on each input channel, it is possible to add the required amount of SPX90II effect to each
input. It is also possible to use two SPX90II units for full stereo reverb and effects in a larger system.
(SYSTEM DIAGRAM2)
MIXING CONSOLE
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