Beetle - I concur with your results and consider the passive parts to be important and know the work Thiel put into finding best bang for buck, always knowing that more bang could be bought. The shunts are in my experience more important than generally thought. In an AC resonance circuit all parts are in play. I am approaching the physical stuff first for practical reasons; I can compare multiple speakers with various treatments to gain experience with less investment.
Dsper - the hiss is coming from the amp chain, not the speaker.The CS5 has rubber pads on the upper and floor woofer and the 5i has center weights.
Dsper - the hiss is coming from the amp chain, not the speaker.The CS5 has rubber pads on the upper and floor woofer and the 5i has center weights.