[Vintage-Audio] Why Was The AR and Advent Speakers Special?

[Duane Fischer, W8DBF]

Hi All,

Can someone tell me what it was about the Acoustic Research speakers that 
made that so popular and different?

I am told that the same man who came up with the design for the Acoustic 
Research speakers also designed the Advent speakers. What was special about 
the Advent?

Since both systems use infinite baffle cabinets and no ports, how do they 
improve upon the low end response of an eight inch speaker cone surface?

Thank you for sharing your wisdom and experience with me.

FYI: I do have a very nice pair of Advent model 2002 with an eight inch and 
a tweeter. I had both eight inch rebuilt because the foam suspension had 
broken down completely. The cabinets and grill cloth were in excellent 
condition. It cost me $100 to have the speakers professionally rebuilt.

Duane W8DBF

P.S. Due to my health issues I am being forced to reduce the current 
resident population of audio gear, speaker systems, electronic gadgets that 
currently live here.  I wish one of you guys would buy my beautiful totally 
rebuilt H.H. Scott LK-48B integrated stereo amp and H.H. Scott LT-110 FM 
stereo tuner with manuals.