Originally Posted by Ricci
I thought I explained most of this in the first post? The data for simulating it in HR or Akabak is on the last page. You could use it to check me on this if you want.
Ya, I was just confused why you left both plots up (like maybe they were at different SPL's or something). 0.4% seems a bit on the low side, but isn't that crazy considering the bandwidth you're operating over. I'll wager you end up closer to 2%, but that's just a gut feel.
Btw, I agree that a 4:1 compression ratio isn't that crazy.
One thing that I think would be interesting would be to compare the predicted maxSPL for your vented cabinet versus the tapped horn. I know one of the things that always comes up is the supposed 10dB boost that a tapped horn should give relative to a vented enclosure, but if you look at your 2V input plots, the low frequency corners aren't the same for the TH and the vent....and if you moved the vent (and changed the driver), you should be able to slide up that LF knee to match output at 20Hz....and then you'll also be a lot more similar on the true efficiency plot. The area I'm not confident in is how to change the driver for a tapped horn to maximize its performance.
Do you have a good feel for your way around in Akabak? I haven't been able to figure out how to get reliable results in the program, or even how to model things that break standard paradigms (which it seems capable of doing). I always have to do my calculations by hand...