Open baffle speakers


Open baffle speakers design is the simplest , to get bass response similar to other design , like ported, the baffle size must be huge to avoid low frequency degradations . Tipical size the baffle   width 10-20"  got weak  bass performance.   I am wondering how open baffle speakers design became so popular ?

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@mijostyn - not with nearfield listening and if that OB works off a competently designed and built field coil driver. You’d have to actually hear one to understand what’s possible. I only need to cross my subs over at 50db - any more affects the nuance of the mid and low woofers. My listening position is 7’ from each woofer, which are 8’ apart 😉

 

in friendship - kevin

@mijostyn - I have not had that experience. My OB woofers have smoother in-room response than I have ever been able to achieve with conventional box subs. I suspect this is because they don’t excite the side to side room modes as much because of the radiation pattern.

My response at the listening position is fairly flat, ultimately rolling off in the upper teens.

My experience with OB speakers is that the hype surrounding them in recent years is mostly unwarranted. They do sound different from most box speakers but not necessarily better. Of course if you spend $10K on a well designed OB speaker, it’s likely going to outperform a $5K box speaker. I suspect that many listeners who made the move to Spatial or Pure Audio Project OBs and raved about the performance were upgrading from cheaper box speakers.

Personally, despite their considerable shortcomings, I prefer Magnepans and ESLs to any of the dynamic-driver OBs I’ve encountered. 

One trait that has been consistent among all dynamic-driver OBs I’ve owned or auditioned is substandard imaging, probably due to the requisite width of the baffles. Also, none managed to completely do away with the resonances typically associated with box speakers the same way a panel speaker can. 
 

 

But you don’t need a subwoofer with 2 15” subs in the lower half of an OB speaker. How much bass does one need? I’ll tell you what, the most natural, the tightest bass I ever heard from a speaker was from an OB speaker. It’s as if the jazz bassist is in the room. Almost scary.