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28 Chapter 5
Read the other devices user’s manual for details on sending Program Change mes-
sages.
Local On/Off
Local is the parameter that allows you to establish whether the keyboard has to play
the internal sounds and transmit MIDI data at the same time (Local On), or whether
it just has to transmit MIDI data and not play the internal sound (Local Off).
Local Off should be chosen when you wish to use the SP-250 as a mute keyboard,
to play another instrument. It should be chosen also when SP-250 is connected to a
sequencer via its MIDI IN and MIDI OUT connectors. This will avoid the notes to
be played twice, by the keyboard and by the sequencer, producing an annoying
“echo” effect.
Normally, you will choose Local On (automatically selected when turning the SP-
250 on), so that playing the keyboard will produce sound.
Hold down the TRANSPOSE/FUNCTION button, and press the PIANO 1 sound
selection button. The Local setting will alternate to On/Off each time you press this
button.
Note: When the power is turned on, the Local will be automatically set to On.
Program Change
The sound of the SP-250 can be selected via MIDI, by sending a Program Change
message on the channel where you wish to assign the sound. The table enlists the
Program Change numbers (numbering from 0-29; if the transmitting device uses
numbers from 1-30, you will need to increment the number by one).
Transmitting Program Change messages. You can send a MIDI Program
Change message to a MIDI device connected to the SP-250 MIDI OUT, to change
its sound. When selecting one of the internal sounds of the SP-250 by using the
sound selection buttons, a MIDI Program Change number will be transmitted, as
shown in the table below.
Receiving Program Change messages. When a Program Change message is
received from an external device, the corresponding internal sound will be selected
Local status PIANO 1 LED status
Local On Lit
Local Off Dark