Lex Friedman’s review of the new Big Jambox from Jawbone:
When I reviewed the original Jambox, I marveled at the volume such a small speaker could generate. The airtight Big Jambox houses a pair of proprietary active drivers along with a passive bass radiator, and when it comes to audio, blows its predecessor out of the water. Compared to the basic Jambox, the new version can play much, much louder than the original, and produces audio with a well implemented balance between lows and highs. And while I was impressed by the original Jambox’s bass, the Big Jambox really kicks out impressive low-end presence. In addition, at lower volumes the Big Jambox uses a loudness-compensation algorithm so that sounds we perceive as quieter, such as bass frequencies, sound relatively balanced. In my listening tests, this worked well.
See also Lex’s hands-on video of the Big Jambox over at the TechHive Beta Blog.