Hi all, been reading around here a bunch in a quest to make my first sub. This build is for 75%+ HT, so the lower ranges (20-30hz) are important to me. Due to that, I went with a vented build for the RSS315HF-4
over a sealed.
I chose a reasonable (I think) plate amp that is dual voltage and has a normal feature set in that price range in the Yung SD30
0. I needed it to be dual voltage, and this amp seemed to fit the bill feature wise.
The build itself will be a 570mm cube on the outside, with a 534mm cube internal volume, around 152 litres, and that'll drop down to just under 150 after bracing and sub are in, give or take. Venting is 4" Precision Ports
from PE, stock length of ~17" or so, which I'll use all of. Box is tuned to 25hz.
I've attached a PDF of the model I've made for it along with measurements, so feel free to take a look and critique.
As for the graphs, I've attached all of the relevant ones I'm aware of from WinISD as well. My concerns here are the port air speeds, which are on the high end <30hz, as well as the cone excursion being right on the edge at 20hz. My AV receiver says it supports 20hz - 20khz, so I'm assuming it has a highpass at 20hz, so I'm hoping the excursion will be okay.
The SPL and response are right around what I'm looking for, more or less, so hoping I haven't missed anything.
So, my question to you guys: Is this a good HT build? Is there anything I'm missing here? Any suggestions/critiques/fixes?