Turned out I didn't need this, so I'm offering the highly regarded Onix R-DES. Here are a couple reviewers' conclusions.
From "Audioholics":
"The big question: Is the Onix R-DES for everyone? No, not really, but it should be. Honestly, with only the most rudimentary understanding of how a parametric EQ works, you can do WONDERS for your bass response. For those out there unwilling to take the time and energy to learn to use the R-DES -- go ahead, live with bad bass or pony up for a much more expensive product. For me, I'm going to sit back and enjoy my system that has never sounded better."
http://www.audioholics.com/reviews/acoustics/onix-r-desFrom "Secrets of Home Theater and High Fidelity":
"If you are a subwoofer nut, you are going to want to have something like the AV123 Onix R-DES kit in your home theater.
It is well constructed, easy to use, and it has a huge effect on the sound. For all of you custom installers out there, your customers will appreciate the improved bass, even if they might not know how you did it.
And, for us frugal consumers, it is not a strain on the piggy bank."
http://www.hometheaterhifi.com/volume_13_3/onix-r-des-subwoofer-eq-9-2006-part-1.htmlI encourage you to read both reviews, as they give detailed looks at how the R-DES operates and what it can do for your system. It works for any speaker, not just subs. This is brand new, never used. Comes with downloaded manual.

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