Originally Posted by: JFRICKYeah, you can tap on an acoustic, but instead of tapping straight up and down, you'll need to tap an an angle to sort of "pick" the note to get volume.

I've found the easiest way to achieve this is to work the tap almost as if the string is a piano key, kinda tap sideways and slide off the string to exaggerate the pull-off...

Just in case it helps anyone visualise...