1) I misread your "source" as being the cells you had "selected". You want the Sheet/range to be static, but definable. That's changed in the code below to the flat name requested, it's even simpler.
2) Why assume that? You requested the macro allow you to choose the output folder each time? Is that wrong, too? When you try the macro below, it will prompt you to select a destination folder. I thought that's what you asked for.
3) I've changed the "selection" process in the macro below to a specified range.
If you really don't want to choose a folder each time, but that's the same all the time, too, then use this, even simpler:
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