This may seem simple to some but i haven't played as long as some. I have only played on an open back amp since I have started playing. My question is what would be the difference between an open back sound vs a closed back sound?
"I use heavy strings, tune low, play hard and floor it. Floor it. That's technical talk. -SRV
typically, a closed-back amp will provide more and tighter bottom end. the presence or absence of porting makes a difference as does the overall size of the cab and the material it is made from.
The open back cab will give you literally a more open, breathing sound, a bit wider and higher...but these are generalizations and don't always work out that way