Replacing current sub with another

@gdnrbob I dont understand by what you mean certain frequencies get attenuated? I am assuming you are referring to room nodes.

Why is there no mention of REL Subs?  Their subs use a high level connection that IMHO have fantastic results.   I'd recommend 2.  The high level runs off your amplifier.   

@highend64 ,

What I meant is that despite my attempts to integrate them, I had certain frequencies that were booming (mostly 150 to 80 hertz) when I switched to 'Pop' music. With non-electronic music, things sounded well balanced, but if I switched, it ended up rattling the house.

I never had that issue with my Vandy 2w's or 2wq's.

FWIW, even Mr. V. agrees with having multiple subs, as a way to mitigate room nodes. Though, the Sub 3, with the integrated equalizer, minimizes that effect.

Mr. V. is a frugal Dutchman, he makes products that perform above their pricepoint.

And, if you look at how his subs operate, then you will see that though Vandy subs might cost more and require a high pass filter, you get a truly seamless integration with your speakers (and others, like Maggies), as well as letting your amp perform better. It is really quite an elegant solution, when you look at it.

bob