The $100 Logitech Wireless Speaker Z515 is a simple solution for freeing your music from the aural prison of your computer and mobile audio player. We've reviewed portable Bluetooth speakers in the past, but most have to sacrifice price for size like the SoundMatters FoxL v2, a tiny Bluetooth speaker that'll set you back $200.
The Logitech Z515, on the other hand, offers decent audio quality, two ways to connect to the speaker, and a tough outer shell built to handle the rigors of portable play for $100, while still maintaining a small footprint. It lacks features like a remote control and the option to use alkaline batteries, but we still have no issue recommending the Z515. On the other hand, if you care more about sound quality than size, the Creative D100 comes with dual 3-inch drivers (the Z515 has dual 2-inch drivers) and a price tag $20 cheaper than the Logitech.
The Z515 is made of a tough black plastic and has two 2-inch drivers mounted on the front of the speaker, but they're hidden behind a solid mesh grille to protect them from the elements. We're not thrilled with the aesthetics of the speakers, and it feels clunky and boring next to the Creative D100's four color options and oval construction. The Z515 feels tough, though, and although the Creative D100 is actually a bit lighter, the Z515's overall footprint is still smaller and actually feels stronger thanks to the extra heft. Logitech also includes a zippered carrying case made of ballistic nylon to shield the device even further.
Aside from the two drivers, the front panel is almost bare, save for two small LEDs for battery power and connection status. A thick plastic foot pops out of the back for free-standing operation, and you can store the wireless USB dongle in a small yellow pocket underneath. The volume and power buttons live just above the foot, and although they're all lined up horizontally, each one is shaped differently, which makes it easy to distinguish them without looking. Finally, two rubber feet sit on the very bottom of the speaker to brace it against a tabletop while in action.
Unlike most portable speakers that can only connect through Bluetooth or an external 3.5mm auxiliary jack, the Z515 also includes a wireless 2.4GHz USB dongle for your laptop that can play wirelessly from around 50 feet away. This way, you don't have to deal with switching between Bluetooth on your computer and the same profile on your phone. Creative doesn't include a wireless transmitter with the D100, but instead sells a Bluetooth adapter separately for $40, which explains the $50 price break.