A very interesting thread and the feedback has been tremendous. The sealed Omega and ACI subs are interesting, although I’m wondering whether the 8 inch woofer in the Omega can really serve the purpose of filling in the bottom end of the La Scalas (remember I’m a subwoofer newbie). I’d assume that you’d look for a woofer larger than the ones in the speakers you’re wanting to supplement if you’re hoping to dig deeper in the bass. On the other hand, Omega speakers appear to have a loyal and enthusiastic following.
I noticed that certain sub models are recommended for small, medium, or large rooms without defining what these sizes represent. My listening room is 14w x 16l x 10h. I’d guess this is a “medium” room, right? Does this suggest a generally appropriate size of subwoofer given the particular speakers I have or is it more complicated than that? My assumption is that a medium sized room probably can accommodate a 10 or 12 inch subwoofer for purposes of supplementing (not replacing) the La Scala mid/woofers. An 8 incher might not move enough additional air to be worthwhile and a 15 incher would be overkill. I’m parading my ignorance here so I’ll contact some of the companies suggested and learn more.
Thanks for all the help.
Don
While you could generalize about size of driver vs frequency, there are variables attributable to a given vendor's overall design, and the parts / materials they use, that could run in the face of any generalizations.
Assuming you're into music -- and hi-fidelity -- finding a sub that provides seamless integration to your mains IMO should be a top priority. Ideally you won't know the sub is in your room. Here's a case where a 15" may go deeper, but may not be fast enough to integrate as well with your mains.
My Vandersteen 2W had three 8" drivers, the ACI Force XL had a single 10" if memory serves me correct, while my current Omega DeepHemp has a single 8" Hemp driver. All three have approximately 200+ watt internal amps.
From a listening standpoint, I do not perceive a difference in how low the three units go. I would characterize the ACI as having a bigger sound when compared to the other two, but not as tuneful. The bigger sound could be an advantage if the sub was used for home theater. Where the Vandersteen and Omega have a more controlled sound, and IMO the Omega being the fastest of the three.
I would also say that if you were really into pipe organ, none of these units may be ideal.
As far as room size, I recommend you check with the vendor of any product you are considering. Assuming they have a 30 day money back guarantee (both ACI and Omega have this, don't know Vandersteen's current policies), they will be straight in terms of setting expectations. They have no reason to oversell their products, where they might get the unit shipped back and potentially negative comments on forums like AC. They can also explain what's behind their design philosophy, and what type of sound / applications they are targetting.
[One thing I love about vendors like RWA, ACI and Omega, is you can pick up the phone and talk directly to the guy who designed the product. Get his recommendation for associated equipment, cable types, room positioning, etc. I have had personal conversations with all these companies -- and I believe all three appreciate being able to share their knowledge and enthusiasm with potential customers.]
Also since your considering subs, you may want to post this same question in the ACI / Vandersteen / Omega web sites / Circles to get feedback from current users. You may also want to call Vinnie when he gets back from CES. He will give you honest input.
Again, good luck with your decision.
