Originally Posted by Pultzar
I'm actually trying to decide between these two drivers (or the B&C IPAL 21). For simplicity and size I'd start with a sealed cabinet 4-5 cubic feet.
Assuming my WinISD modeling is accurate, both drivers appear to have about the same output (within a few db) at 20hz with the nod going to the HST. Above 35hz, the pro drivers start to have an advantage. This is given a 2000w input.
So what would make the HST better than the NSW/IPAL or vice versa?
I haven’t modeled the IPAL, since I didn’t have any interest in that driver. Way too low of an impedance load for my amps.
I originally picked up the HST’s for the simple reason that I’ve wanted some since they first came out, and they’re the biggest, craziest long throw 18 available. I originally intended to put them in LLT sonotubes.
Then I built a set of mini devastators that turned out really well, so I decided to get more elaborate. The Submax V3 modeled nicely with the HST, and worked perfectly with the space I have available.
After getting the panels cut, I discovered that the new heavy-basket HST is too deep to fit. The submax is not an easily adjustable design, so this completely shut me down.
Since I really liked the idea and fitment of submax, I decided to pick the ideal driver for that cabinet, and my amplifiers. My amps are relatively simple, 2500w at 4 to 16ohm. After some back and forth discussion with ltd02, and quite a few models, the NSW was chosen as the best option. Most expensive too, of course.
As I mentioned earlier, I had wanted to own some of the HST’s since they first came out. I wasn’t ready to let them go without usage, so I decided to build some narrow cabs to replace my 4cf sealed HT18’s. I was convinced by members here to go with a ported design. I really wanted to go low tune, but wasn’t sure if I could integrate it with the mini dev’s and submax’s. I ended up with a tri-tune design: 11,16,and 20hz.
Here’s where those are now, one just assembled, the other cleaned up and ready for the outer baffle:
For what you’re doing, a 4-5cf sealed isn’t a good option for either driver.
I was modeling the HST hitting xmax at 6cf sealed on 2500w. You’re going to need even more volume with 2000w.
The NSW isn’t a great match for a sealed box in general. It is much happier ported. Databass has tested the nsw sealed so you can see the response.
I haven’t heard either yet, but by models:
If this is going to be your only sub: go NSW ported at 20ish.
If you have to go sealed, go HST for theater use, or NSW for music.