Of course, it would appear as if the capacitor type I had on hand with sufficient quantity (for matching) and value (1uf, to maintain a reasonable range for resistance) is a touch larger than original design...
...which led to something of a congested stuff.
I figure I can use the low range of <40 Hz to throw away subsonics (and audible stuff below the horn loading of my bass bins, sorry) in a live setting, and route that to CV stuff in a studio. Not saying I'll opt to shave deep lows in a recording atmosphere, don't be silly, it's just nice to have the ability to prune a branch in that manner.
Of course, if I REALLY like it, I may go crazy and build one with DOAs.