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Does a Sub for Wilson Sophia II make sense?

I went from Martin Logan Electrostats, Aerius, with Genesis sub to Wilson Sophia II. Even with the Aerius, it was no trivial matter to integrate the sub seamlessly. I have a rather large room 18' by 36' with some large openings as well. Based on the measurements by Stereophile, the Wilson's start rolling off around 50 hz. Has anyone tried to integrate a sub with the Wilson Sophia? Also any suggestions on sub is also appreciated. What I was thinking is full range to the Sophias and filling in from 20hz to 50hz with an active sub and adjustable crossover. I listen to records exclusively, all types of music, but mostly rock and then Jazz. My system is
VPI Classic 3 Dynavector XX-2 MKII, Avid Pulsus phono stage, Acurus RL-11 Preamp, Music Reference RM-9 MKII amp (Genalex Gold Lion KT77 and Russian 6922) and Sophia II speakers.
Thanks in advance for any help.
captain_winters
lloydelee21
1,202 posts
 
It is for me...without question.
irvrobinson
295 posts
 
What sort of source were you measuring? Pink noise? White noise? Warble tones?

It looks to me like your entire bass range from 200Hz downward has problems, and low-bass is out to lunch.
captain_winters OP
133 posts
 
1/3 octave warble tone at -20db
irvrobinson
295 posts
 
That probably means you have some real bass problems. It might help if you get a better measurement system, like the Dayton Audio OmniMic from Parts Express.

You need at least one sub, you might need two but I'd buy one first, and it looks like a good low-pass frequency is at least 120Hz, maybe higher. Maybe as high as 200Hz. You'll have to experiment. A suck-out in the 100-250Hz range makes everything sound thin.
captain_winters OP
133 posts
 
Thanks, I have had problems with my room in the past as well. I need to experiment more with speaker placement and room interaction. Thanks for the tip on OmniMic.
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