Is there an Alpair driver that might work well with Omega boxes?

Is one picture acceptable? 😀

The "helper" driver that makes this a "1.5" speaker is acting as a fake passive radiator. I'm not inclined to cut a circular piece of plywood to plug the opening, but I might test out a scrap piece clamped over the driver to see if there is an improvement. For now, I'm pretty happy with my good luck.

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