How can I load these voice files into my SX keyboard? The voices were created for older Yamaha keyboard. Do they work with the SX keyboards?
It's most important to understand, that VCE files are not voices! VCE files are only settings (modifications) applied on actual existing voice samples.
1. You can put VCE files onto USB stick, which you then insert into keyboard. You can use VCE file directly from USB, or you copy desired VCE files into keyboard user memory -in his case USB stick isn't needed anymore.
2. VCE file work on every keyboard that "understands" VCE file. Result however, depends: if actual voice sample (for which VCE file was created) doesn't exist on your keyboard, then the resulting sound will greatly differ from original -in short: using such VCE is pointless.
Further explanation:
VCE files are not meant for sharing voices among different keyboards. Reason being (as said), to get desired sound by using particular settings (defined inside VCE), required voice sample needs to be present in keyboard.
It's like sharing the recipe (VCE) for omelet: if there are no eggs (voice sample) in the kitchen (keyboard), we will never get desired result.
Now comes the tricky part... If particular sound sample (required by VCE) doesn't exist, then keyboard will try to find the closest match. And the resulting sound can be anything between ok-ish all the way to trash.
The question remains: how do we know if what we hear, actually sounds as intended? That is, how can we know if needed voice sample exist in our keyboard? The only way is, to load VCE into some MIDI software and check for MSB, LSB & PC numbers. Having these numbers, we can then find out if such voice exists in our keyboard (list of all voices can be seen inside "Data List" of particular keyboard -provided by Yamaha).
Bogdan