Bracing overkill yay or nay ?

[Loren42]

I have one problem at around 150Hz that is greatest at the top corners of the baffle, also the lower corners but not so much the sides or open area of the front. It is also strong on the side panels starting at the side of the driver and reducing in level the further away from that point (ie: in an arc) over the side panels except near the two side braces I'm using.

Greatest? How much greater?

Define strong.

 

[AllenB]

Sitting beside the speaker with a signal generator it sounds maybe +10dB overall. At moderate levels using a stethoscope on these points can be uncomfortable. Might have a slight buzz to it.