Originally Posted by drh3b
I have 2 SB-NSD. I am hitting the limiter on a semi regular basis. Will buying two more, and stacking them 2x2 bring any appreciable SPL improvement. I'm fine with the sound, just like a few more db. I can't afford the proper upgrade path of 2 S1's or 2 SB16 Ultras.
Although, buying one SB16 ultra, and stacking the NSD's with my two older Velodynes. sounds interesting if goofy looking.
Not to take anything from Mike's post - because he's forgotten more about Subs than my overall knowledge - but I was sort of in the same boat as you.
I had a PB10 NSD and I was hitting the limiter and needed to bring the volume nearly 3/4 up. I was contemplating getting a PB-2000. I was fine with the sound.
I got the PC13 Ultra instead - because I always wanted one, and my wife and I had a fight about something else. So whenever I get into a fight, I like to make myself feel better by buying something I want - and then say sorry later.
Anyway, I noticed immediately the nuances between the Ultra and the lower models - there's a depth to the sound I didn't realize.
I always use the Queen's ship landing in Star Wars episode 2 as my reference scene. I did a A/B comparison of the two, and I think the Ultra revealed 1/2 more of what I was used to hearing. Both at reference volume.
As you know, adding multiple subs just gives you SPL advantage and can make the bass more pronounced, but the detail - will be the same. Only a better sub design can give you that.
So, don't discount getting an ultra and pairing it with other subs. The ultra will reveal bass like you're not used to hearing/feeling.
Just something to consider because of SVS's amazing in home trial.