A speaker amplifier built for a University of Waterloo engineering competition with the objective of maximizing output decibels. The enclosure uses a ported slot design — a tuned bass reflex port cut into the cabinet that reinforces low-frequency output by channeling rear-wave energy back out in phase with the driver.

The enclosure was designed and built from cardboard, with the port geometry and internal volume tuned to the driver's Thiele-Small parameters to hit the resonant frequency and maximize SPL. An amplifier circuit drives the speaker from an audio input. The build took 1st place for loudest decibels at the competition.

• Ported slot (bass reflex) enclosure tuned to driver resonant frequency
• Internal volume and port dimensions calculated to maximize SPL at competition test frequency
• Amplifier circuit integrated into enclosure for a self-contained system

1st place — loudest decibels at the University of Waterloo engineering competition.