A friend told me JBL DD67000 is actually very bad speaker, is it true?

What Douglas said, + 1.

coli, as you can glean from other posts of mine on this forum I am and always have been a big fan of JBL. Terrific sounding speakers in general and of course some models better than others. That said, I wouldn’t go as far as to say "their newest designs are the best value in audio right now, nothing comes even close" Consider a pair of GoldenEar Triton 1. In my view the T1s are a far better value. JBL cannot compete at a $5K price point. Higher end JBLs are phenomenal, but you pay for it dearly with big $$$$. (hence the reason "best value" can be scrutinized) 

If you can afford to purchase  the 67000 then you can afford to go demo them at some point.  If you are spending that kind of cash, then you certainly should audition and see what you like.

I have the S3900's and they image like crazy, but what I really like is that instruments, particularly guitars, drums and vocals sound real.  I also prefer rock music and the JBL's do it justice.  Dynamic without being bright and just a bit midrange forward.

I can also appreciate a great panel speaker.  I've demoed upper end Martin Logan's multiple times and for acoustic music, vocals, piano they are fantastic and if I could own a second system I certainly would consider them.

But besides listening if you want to be scientific I suppose I would ask if someone doesn't think Harman International doesn't have the resources to test their speakers beyond that of most other companies?  I love little companies also (like Salk who makes a great speaker).  But to think the big boys don't have more testing resources is naive. 

Ultimately. Go listen and see what you think,

Actually, the big JBL is a wonderful speaker.....VPI uses it for the definitive test for their highest end turntables.

The JBL DD67000 are a great speaker for listen to Chinese Drums etc.The latest JBL are using cutting edge technology and great for those who like there Bass.....