I just posted this in another "book shelf size" speaker thread, but wanted to repost here as another "thumbs up" for JBL solutions.
I just built a new 16' x 24' video production stage/theater fitted with (7) JBL Control 5 monitors powered by a Yamaha 2020 and a BIC PL-200 sub.
The JBL Control 5 monitors are an older, front ported design with a flat, Yamaha NS-10M type response, which has proved perfect for my studio use. All of the enclosures are located near a barrier, so any porting was a real concern as far as any unwanted bass reinforcement. Frankly, I had no option but to find a front ported or non-ported speaker solution and this JBL setup is proving to be every bit as good as the more expensive Blue Sky alternative I almost bought instead.
I am crossing over at the 80hz Dolby spec and these JBLs are very flat down to about 50hz and roll off toward 20hz. The enclosures measure 15"x10"x10" and I was able to use/adapt some old Paradigm (M-60) speaker mounts to hang these babies.
I would recommend these JBLs to anyone who needs a passive, front ported design enclosures.
I have more than enough sound pressure to fill my space well before I see any flicker of the protection circuit inside the enclosures. Surround imaging is excellent as you might expect from using matched enclosures at all locations. The Yamaha 2020 offers a very good calibration albeit less advanced than some alternate methods. I am very happy with the results and my clients have been very impressed as well.
I still mix TV/Radio/Music 2.0 on a set of Yamaha NS-10M Studio monitors. Mixing surround on this JBL setup has been a nice transition.