When a reviewer specializes in seeking out innovation and value in affordable loudspeakers, certain manufacturers warrant revisiting again and again—companies that consistently deliver high-value products, but also steadily revamp their lines to trickle down design innovations to ever more affordable models.

As I mention in last month’s “Entry Level,” September 5th would have been John Cage’s 100th birthday, and celebrations of all shapes and sizes are taking place around the world. Fans of Cage’s music are especially lucky: several exciting new releases are now available.

Here are just a few:

When I was seven years old, my father brought home an air-conditioner: a flimsy, hulking thing that sat in an open window just as a frame of X-ray film sits in an open mouth. It worked by consuming a steady diet of ice cubes and water, then blowing a fan across the slurry and into our grateful living room. It was loud and it stank and it wasn't very cold at all.