Final Tuning and Verdict of the Retro PC Dual Subwoofer Project

I was recently reminded that I never did a final test and tune of our Retro PC Dual Subwoofer Project. This standalone subwoofer design is simply that, a subwoofer that you can integrate into an existing system or use it in something exotic like a Retro PC where having bass was somewhat non-existent. Overall, the verdict is in and we have a winner! At least after some tweaks to the Dayton Audio DSP settings.
Edit: uploaded a new version with arrows to highlight the details.
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[@GarretClaridgeMeerkat]

Really cool

[@Hardwareasylum]

It was mentioned that adding "indicators" to the charts would help. So, I have uploaded a new version calling out the points I mention in the video.

[@tuffytoys9707]

! Great Video. The First sub with the Plate amp looked the best in my opinion. However I had the same problem Listening to those "Tinny" front computer speakers so I made a DIY Solution with some 6*9 speakers I already had and one of those Booster/Equalizers with the Spectrum analyzer display from the 80's. I'm just Using the Two Channels but it Sounds So Great. Not as low as the Subs but for a set of computer Speakers those coaxial 6*9's rock and especially sounds WAY better than the small Logitec style speakers. Perhaps you Might Consider the 6*9's or Similar instead of the circular "Bookshelf" Design for your build. Also 6*9's can be had for Cheap compared to buying Speakers online and Shipping etc.

[@Hardwareasylum]

Thanks for watching and the comments. The first box was nice but, largely unfinished and there are aspects of the current box that didn't turn out how I had expected. Never know, I may do a "done done" version of this box and ditch the 3d Printed port.
As for the desktop speakers. I'm not sure I will go with a 6x9, I honestly never liked those back in my car audio days, mostly since every 6x9 was a coaxial and couldn't be tuned. However, in this instance they will simply be too big for my desktop. My initial thoughts were to keep things compact but expand the dynamic range over what you would normally get. so something like a 4"-5" Mid-bass coupled with a tweeter then focus on mid-range + tweeter or full-range on the center channel.
The jury is still out on a final decision and I'll be sure to do a video introduction when it comes time.