There are many digests available on the web
that address some aspect of this, but in a rather disjointed fashion. However, the
"Acoustic Guitarists Annotated Guide to the Internet" provides the most detailed
and well organized answer that this author has found.
From the Annotated Guide:
"Accurate live amplification of the
acoustic guitar may well be the audio equivalent of the search for the Holy Grail.
Few if any serious guitarists seem completely satisfied with any of the available
solutions. This being said, there are many very effective ways of producing a
convincingly realistic amplified acoustic guitar sound. They vary greatly both in
terms of the equipment required and in terms of expense."
Here is a hierarchical detail of the
information provided at this site. Just select the link that gets you to the
specific information you are seeking.
Acoustic Guitar Annotated Guide to
Acoustic Guitar Technology