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![](https://lemmy.dbzer0.com/pictrs/image/a18b0c69-23c9-4b2a-b8e0-3aca0172390d.png)
That is certainly a better value option if you can still get the drivers and amps for a reasonable price over there.
I went the DIY route as well and build 2 of the VBSS style subs. I wanted to build something bigger, but my wife vetoed that. AVS forum has plenty of information on design options you have.
It seems you didn’t read the article at all.