Hi All,
Yes the OB really reduces the boxy sound and still preserves a lot of the bass.My 604D in OB are capable to reproduce good bass till 120 hz. Below two khorn reproduce from 40 to 120 hz. You can see at :
www.estroarmonico.com/Altec_2.JPG
www.estroarmonico.com/Altec_3.JPG
www.estroarmonico.com/Altec_4.3.JPG














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