I'm guessing you are already aware but if you aren't, feast your Vulcan squinties on these: 16cm (6.2") and 30kg! Russell Dawkins

Huh? After the obligatory double take, I realized this wasn't a "you've got an electronic post card" type hoax e-mail from a complete stranger to seduce you into clicking the embedded link only to download the latest virus. This was a 6moons reader who had apparently discovered something worthwile. I clicked on his link and presto - full-range Japanese drivers with some unique design twists. Definitely newsworthy. Russell was merely misguided assuming I was already hip to this stuff. I wasn't. Likely, neither were you. So knock yourself out now and be sure to visit their website afterwards. Cheerio.

Manufacturer's website