I don't know about the 5, but the Storm III would be as good as the Strata III for N805s. I had the pair at home for a long-term test, as well as N804s, N803s and N802s, and the Storm even benefited the last one especially on soundstaging, believe it or not. I found that using spikes tightened the sound a bit, if that is what you like, but with or without them it is a musical sub and easy to blend. I liked it so much it is the only component I kept when I sold my system, and I intend to use it with ATC SCM12s or Paradigm S2s in a couple of months.
4 responses Add your response
Sumiko seems to charge a huge markup for importing RELs. Frankly the price of new REL subwoofers is not competitive here in the US. I own a Strata3 which I bought used for $800, and for the price I'm very happy.
Other people have recommended ACI for home-grown subwoofers. They make a titan sub which is apparently pretty good, though cannot cross over as low as a REL (Though I doubt that would be a problem crossing with 805s, since they're pretty small speakers).
REL also makes the Rega vulcan ... perhaps that will still be imported.
I have also heard good comments about the Ruark Log-Rhythm subwoofer.
Lastly ATC makes an active sub, but I don't know if it's available in the US. And so do Linn. Their sizmik is quite well reviewed, but, again quite expensive.
You could also check MJ Acoustics, a British competitor of REL. They make similar subwoofers including the speaker-level connection and have good reviews. Their website is here and their US distributor is Technote America Inc., 813-630-5003.
I've had a REL Storm 111 for over 3 years, its a great HiFi sub for small speakers and small amps. This was used with B&W CDM9's and then 803's, but upgrading to a robust amp, Bryston 4BSST, eliminated the need for the sub.
I also found the customer service from both Sumiko and REL is lousy when compared to customer focused manufactures and distributors. Consequently I'm not suprised about their attitude. If you still need a sub I'm selling my redundant REL.