Attack Wall

http://www.asc-studio-acoustics.com/attk.htm

最前面這段很妙

"As I listened I was absolutely amazed to hear, and in my mind's eye, to see, microphone positions in the stereo panorama that I hadn't seen in decades - I had maybe never heard these mixes as well as with the ATTACK Wall. I was absolutely knocked out, just floored. I ordered an ATTACK Wall right there, and it's been a part of my studio world ever since." 

-- Bruce Swedien, five-time Grammy award winning engineer

哎呀呀～五度葛萊美獎得主數十年來都沒見過的音場，
嗯...大家辛苦啦...看來縱使錄音界的高手也沒搞定空間哪...

名為attack，意思是用了就能聽出attack囉？

這東西的原理得請Florian解釋囉～
要求上下必須露空，裡面似乎也有空腔？
吸收頻率到110Hz，嗯...

這東西的建議擺法，該是貼牆，增加其吸收效率，
人盡量遠離牆與吸音柱，很一般的手法，並沒啥特別之處。

又，老美的網站怎麼老是愛搞的五顏六色啊...