I had a pair - they were great, but ugly. I don't recall the drivers for sure, but they have a 10" woofer, transmission line, 5" kevlar cone mid (I think), and silk dome tweeters - 1 front firing, and 1 rear firing. Not sure how easy they are to service, but likely not bad - after you remove the sock. I had to replace the socks on mine - I fabricated the replacement which was easy.
At the used price of ~$600+/-, they're a great deal, but at the size - they are cumbersome. As I said - they are ugly. I was considering trashing the sock and adding veneer to the cabinets (solid MDF). I spoke with Albert V.S. about it and he said be sure to send pictures in. I ended up selling them instead as I bought VR4 version 3's, so I sold them.