Re: Sierra-2 Bass, Subwoofers, Acoustical Treatment
Have you tried the Sierra-2's without any sub? Mine sound great without a sub as long as I'm listening to music that doesn't go too deep. For example, a sub wouldn't get used much listening to a string quartet. But if it's techno dance music, you're going to want a sub for sure.
That said, servo subs typically do a much better job of reducing "boominess" and integrating well with your mains, compared to non-servo subs. If you're only going to listen to music and not do any HT, a sealed sub like a Rythmik L12 would be a good choice. If you can swing a pair, you can get better control of room modes, which is a problem in any small room. But you can always add a second one later.
Thing is, you can try it and see how you like it. If you don't like it, send it back. I think Rythmik gives you like 45 days of in-home trial.
Personally, I do more HT than music, so the subs I use with my Sierra-2 mains are a pair of Rythmik LVX12s. They do surprisingly well with music. And the integration with the Sierra-2s was just scary for me -- the subs completely disappear and all I get is the Sierra-2 sound ruler flat down to around 16 Hz (does a mean pipe organ). Those bottom two octaves just sound like the Sierra-2s are effortlessly playing them.
I'm just sayin' if it works that well with the LVX12s, I would imagine that it would work even better with an L12.
"If it sounds good, it is good." -- Duke Ellington