Quad L2 Subwoofer

I own a pair of Quad 12L Active speakers, which I purchased new about 10 years ago, At that time, there was a matching subwoofer: https://www.hifix.co.uk/quad-l2-subwoofer
I didn't buy one then, but wish I had. And they never seem to come up for sale. Anybody know of one that could become available ? PM me or reply here.
Larry Fisher
Port Townsend, WA