Cinder Speakers

Daniel Ballou and Dashdot are developing a system that transforms the humble cinder block into a high fidelity speaker. Concrete is a low resonance material that minimizes vibrations and reduces coloration of pure sound delivered by the drivers. A drawback of course is that it’s heavy to handle and ship, and labor intensive to mold. However, cinder blocks are available throughout the world for about a buck (or free in a construction site trash pile).

The Cinder Speaker ships as a pre-assembled and pre-wired front panel, including a 5” driver, tweeter, crossover, and input jack. The back panel includes mounting hardware that spans the cinderblock and seals the enclosure.

The cinder block comes from your local hardware store or your neighbor’s backyard.

In ‘backburner’ development for over a year, we are in the fine tuning stage, selecting final components and vendors. The retail price target is $150, and those interested in updates and project status should email cinderspeakers@danielballou.com