First off, I would like to apoligize to the designer, even though I used an air core inductor and purchsed a different port tubes (did not use) and the pre-made PCBs, the entire parts cost was less than $100. Not sure why I thought they were more expensive.
Secondly, it was thoughtless of me to "hack" someone elses design and I understand how doing so could ruffle some feathers.
In my defense, I'm retired living on a fixed income (actually, it's shrinking), I was just trying to do something w/ a pair of speakers I wasn't using, I certainly wasn't trying to "imporove" the Nexus. I also suffer from "trinkeritis".
As far as my modified C-note and the Nexus TM being two entirely different speakers, well, I looked at P.E.'s parameters for the DSA and the DS woofers before I started and i think it would hard to find two "different" drivers that spec'ed more closely. I didn't think it be worth spending the extra $70 for what I was trying to do.
An I did use the ND28F-6 tweeter, mounting it on the ND25's waveguide because that was by far to easiest way to use it in the C-note's box. I had no sonic exspectations and seeing how well it fit, I figured whatever the WG did for the ND25 woul be no worse or better w/ the ND28.
I reduced the C-notes box volume by 10% and while it is still a little larger that the specified Nexus volume, the two baffles are very close in diamensions.
I had no clue that what I was doing had such a great pontential for disaster. But I guess the Audio Gods were smiling down on me as these sound absolutely fabulous The woofer particually impresses me. I have usied different alum. coned woofers over the years (RS150 and ND140) and although I would never say "they ring" in a well designed speaker, there is something about them that never allows one to forget they are alum. A slight metalic after-taste if you will. There is none of that in my "Frankenstien" application. They are quite "snappy", go fairly low and overall, give these speakers a warm and enveloping quality I apprieicate in their desktop application. Likewise, the tweeter, while being "on-point", is slightly subdued, another plus in my application.
Bottom line, this was a fun and easy project that way exeeded my expectations, and I guess that is what matters to me.