Was about to ask a similar question. I put the JBL810 in the cabinet of my LAH (because of Dave and his posts) and I love how it sounds so much. I have been considering doing the back box with the GX528, and then doing the same to my South Park. Great work Dave!

I was just looking at these today wondering if this is the new go to cabinet sub now that the 810 seems to be out of stock or discontinued. I would love to hear what you think about how it sounds.
Thanks,
Lb

I went with 8 ohms based on this forum.

Adjusting the balance between the cabinet and back box speakers is how I “got” more volume without an amp.

Service menu > Utilities > Volume > Fade

My Godzilla with Kickers 46CSC and the JBL JBLSUBST82AM sound great after tweaking the 10 Band Eq and setting the fade to -10.
-Lb

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I started with those setting but the kickers were just too bright for my ears so I came up with my current EQ…it seems to evolve from time to time.
Merry Christmas!
-Lb

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A smart phone, a Google or OneDrive to upload videos, and any editing software on your home computer is a good start. Some of my edits are all in phone TicTok edits that I export for other platforms. While other edits are full blow Adobe Premiere timeline edits with B-roll and a soundtrack. For as much as I have learned on this thread hit me up and we can talk about what you want your channel to become. In the mean time look at YouTube content and think about what your style is.
-Lb

I think you a couple of things might be at play.

-YouTube typically uploads a Low Res SD version first then queues a Hi Res HD version for transcode (may take 10-20 minutes).
-YouTube will often set your playback quality to auto. It depends on the device and your internet/cellular speed.
-I am not sure what aspect ratio and resolution the video was shot in. Did you shot in 1920x1080 or 1080x1020? The way it is exported it looks like 1920x1080 formatted to 1080x1920. Resulting in pillar boxing.
-the speaker lighting kit video seems to be a max resolution of 720.
Overall the Foo video looks pretty good, I do think for your content you may want to standardize a position to shoot sound comparisons from as the small mic is greatly influenced by its position to the speakers.
Hope this helps.
-Lb

I have four Spike 2 pins, none of which have an external amp. Two pins are utilizing the Pinovators sub adaptor (linked in an earlier post) and the line level input on the sub. One is soldered in parallel to the cabinet speaker and uses the right or left speaker level input on the sub, the other is alligator clipped in parallel to the cabinet speaker (speaker level input on the sub). I am not a fan of clipping things into place so I will fix that someday.

Side note: If you use the Pinovator adaptor the sub will part of the backbox 10-band Equalizer. If you wire it in parallel it utilizes the cabinet speakers 10-band EQ.