A device may include a wire terminal with a first and second wire connection, and an inertia bar. It may also have a panel that houses the wire terminal, a first speaker, and a second speaker. The panel may include one or more conduits for a speaker wire, which connects the first speaker and the second speaker to the first and second wire connections, respectively. The first speaker may have a first set of electrically activated coils, which includes a portion of the speaker wire between the first wire connection and the second speaker. Similarly, the second speaker may have a second set of electrically activated coils, which includes a second portion of the speaker wire between the first speaker and the second wire connection. The size of the second portion may differ from that of the first portion. Additionally, the inertia bar may connect the first and second speakers.