Band ina Box notates the Bass part such that a Bass Player can read it. This is also the convention when writing Bass parts.

It is thus written one octave higher than its actual pitch. This is so there won't be "all ledger lines" in the part, making for a hard read.

Some synths do not respond to that -- they respond to the actual Concert pitches. They are not conventional, then.

Maybe that's the problem you are having. Easy enough to find out, by transposing the bass part down one octave and see if it plays okay sounding with that synth then.


--Mac