What's a good MIDI editor?
Sekaiju
Check out OmniMIDI if you want to use soundfonts with it!
How do you increase pitch bend to 12 semitones?
Put these events at the beginning of the channel:
To apply this to multiple channels, select the three events in the Event List and use Ctrl-Drag in the Track List to copy them over.
What values correspond with what semitones?
Here's a chart:
Use negative numbers if you want to go the other way.
Owner's Manuals
(For synths I own)
Roland SK-88 ProYamaha DX-7 [Voice Library]
PROTEUS/2 Orchestral (Patch List)
Ensoniq ESQ-M