Do Plugged Virgos sound better?

Hi Snickelfritz; what you said makes sense because if I run the Virgos without the sub the midbass hump is not nearly as prominent (presently I'm running the Virgos full-range). With the sub, no matter how low I cross it, it seems to increase the midbass too much.

And sure, if you have an accurate "kit" to measure the bass response, maybe we can chart the response and possibly fine-tune it a bit further. That would be great. Thanks!

Ever try some bass traps? In the corners?

I've tried some of the old-style, round Room Tunes, but not actual bass traps. But I may try bass traps in the near future if my latest efforts fall short of my expectations...

I have a simple Ratshack SPL meter/tripod and Stereophile TestCD with 1/3 octave warble tones, and a rough correction curve for the microphone response.
(close enough for this purpose)

BTW, this greatly helps in finding the optimum setting for the X-30 variable phase control.
It's interesting to watch the cancellation frequencies slide up or down the spectrum as the control is rotated.
Differences of 10 degrees rotation can be very significant at some frequencies.

Also, moving the main speakers by as little as an inch or two can make a large difference in the upperbass balance and smoothness.
I was able to get ruler flat response(+/-0db) from 200hz down to 80hz simply by moving the main speakers a specific distance from the front wall.(37" in my case)
Other positions resulted in windows as large as 6db in this range!
The difference this makes in overall bass transparency can't be overstated, especially if the low-midbass maximum is reasonably close to the reference level.(difficult compromise between extension and room-boom)

I'll be installing a set of lowbass, midbass and midrange traps this weekend. If the measurements are promising, maybe we can construct some for your room.
(the 2'x8'x4" paneltraps cost about $35 each to build)

Technically, anything that has been plugged can no longer be considered a Virgo ;>)