A user configurable speaker comprising: at least two drivers (10+8, 110; 126, 128) mounted in an enclosure (104; 124) forming an at least partially enclosed volume; an audio input interface configured to be coupled to an audio source through one or more amplifiers; and a connector interface configured to receive a routing card, wherein the routing card is insertable in a first orientation to connect the audio input interface to the audio source in a first operating mode with respect to driver selection and connection to the one or more amplifiers, and a second orientation to connect the audio input interface to the audio source in a second operating mode with respect to driver selection and connection to the one or more amplifiers, wherein the routing card comprises a printed circuit board having a connector side comprising a set of connectors for connection to a corresponding set of connectors on the connector interface, wherein the routing card comprises a set of conductive traces coupling the set of connectors of the connector side of the PCB together such that, when the PCB is inserted with the first orientation in the connector interface, the traces couple the set of connectors on the connector interface together in a first routing scheme thereby causing the speaker to operate in the first operating mode, and such that, when the PCB is inserted with the second orientation in the connector interface, the traces couple the set of connectors on the connector interface together in a second routing scheme thereby causing the speaker to operate in the second operating mode, and wherein the set of connectors of the connector side of the PCB comprises first and second rows (204, 206) of connectors and the corresponding set of connectors on the connector interface comprises first and second rows (406a, 406b) of connectors, and wherein, when the PCB is inserted with the first orientation in the connector interface, the first row of connectors of the connector side of the PCB are coupled to the first row of connectors on the connector interface and the second row of connectors of the connector side of the PCB are coupled to the second row of connectors on the connector interface, and when the PCB is inserted with the second orientation in the connector interface, the first row of connectors of the connector side of the PCB are coupled to the second row of connectors on the connector interface and the second row of connectors of the connector side of the PCB are coupled to the first row of connectors on the connector interface. at least two drivers (10+8, 110; 126, 128) mounted in an enclosure (104; 124) forming an at least partially enclosed volume; an audio input interface configured to be coupled to an audio source through one or more amplifiers; and a connector interface configured to receive a routing card, wherein the routing card is insertable in a first orientation to connect the audio input interface to the audio source in a first operating mode with respect to driver selection and connection to the one or more amplifiers, and a second orientation to connect the audio input interface to the audio source in a second operating mode with respect to driver selection and connection to the one or more amplifiers, wherein the routing card comprises a printed circuit board having a connector side comprising a set of connectors for connection to a corresponding set of connectors on the connector interface, wherein the routing card comprises a set of conductive traces coupling the set of connectors of the connector side of the PCB together such that, when the PCB is inserted with the first orientation in the connector interface, the traces couple the set of connectors on the connector interface together in a first routing scheme thereby causing the speaker to operate in the first operating mode, and such that, when the PCB is inserted with the second orientation in the connector interface, the traces couple the set of connectors on the connector interface together in a second routing scheme thereby causing the speaker to operate in the second operating mode, and wherein the set of connectors of the connector side of the PCB comprises first and second rows (204, 206) of connectors and the corresponding set of connectors on the connector interface comprises first and second rows (406a, 406b) of connectors, and wherein, when the PCB is inserted with the first orientation in the connector interface, the first row of connectors of the connector side of the PCB are coupled to the first row of connectors on the connector interface and the second row of connectors of the connector side of the PCB are coupled to the second row of connectors on the connector interface, and when the PCB is inserted with the second orientation in the connector interface, the first row of connectors of the connector side of the PCB are coupled to the second row of connectors on the connector interface and the second row of connectors of the connector side of the PCB are coupled to the first row of connectors on the connector interface.