When I upgrade my frontstage I have already decided I am going monitors for mains as %95 of my source is movies.
Ideally I know just buying a 3rd monitor 65 for the center would be the best match, but I would like the center to have a little more oomph.
Do you think this setup would be ok or no as far as timbre matching and all?
That setup would work just fine as all of the newer Definitive Technology are voiced the same, in order for them to all work together. The third SM-65 would likely have more oomph than the CS-8080 due to the SM-65 having larger drivers. That would be the best way to go. No matter which speaker brand you go with, having a 3rd matching speaker to the Lefts and Rights is always the best and most preferable way to do it as the horizontal placed center channels are always a design compromise only made that way in order to be more space effecient.
They both have 5 1/4" midrange drivers but he CS-8080 has a built in powered subwoofer.
Hello Ten, personally I would suggest a CS-8080 center, if you can swing it. The powered sub in the middle can really help with dialog and effects realism. The SM 65 is also a fine choice if you can't gather up the bucks for the CS-8080, but as you say that your main usage is movies, you really want the dialog to be as realistic as possible. No worries about timbre-matching issues from our perspective. I hope this helps - best, Joe
You can get the sm350/450 for around 200 dollars/ pr from New Egg!
Set up #1: EMP e5ti, e5Ci, and SLS Q line Audio surrounds, EMP 10i10i sub Set up #2: Def Tech SM450, CLR2002, SLS Qline surrounds and Klipsch 12wD sub Set up #3: JBL130, JBL120C and Klipsch synergy sub