Yes. Sold a pair of L810's that I didn't hate, just didn't love them. I liked the L710 I picked up at the same time better and couldn't justify keeping both. Probably did not put enough effort into setting the L810's up optimally, either - but, where I needed them to work the options were limited and the L710 were superior in that application.
If cutting a mismatched pair to pieces with a jigsaw and throwing what's left in the trash, and selling off the few usable parts in them counts, guilty again. Friend gave me an MV30/t and MV40/t to dispose of. One of them was rodent infested and the little bastard had chewed through ONE lead wire on each woofer, then pissed all over the fiberglass stuffing which made a mess everywhere it touched something else, corroded the back of the tweeter etc. IIRC the only useful parts of that one were the crossover board and the connector panel - tweeter tested bad after removing it. The other speaker wasn't much better but at least the woofers worked ok.
No guilt on that one whatsoever.
John