Externally ducted vehicle loudspeaker

A loudspeaker for a vehicle, the loudspeaker comprising:

• a transducer to radiate sound into an interior space of the vehicle,
• wherein the interior space of the vehicle comprises a passenger cabin of the vehicle;
• and
• an assembly coupled to a rear side of the transducer, the assembly comprising an enclosure and a passive radiator, the assembly disposed such that acoustic energy radiated from the rear side of the transducer passes through the enclosure and excites the passive radiator, causing the passive radiator to radiate acoustic energy to a region outside of the interior space of the vehicle,
• wherein a resonant frequency of the transducer is dependent on at least one characteristic of the passive radiator, and a resonant frequency of the enclosure is dependent on at least one characteristic of the enclosure, wherein the passive radiator limits a correlation between the resonant frequency of the enclosure and the resonant frequency of the transducer.

A loudspeaker for a vehicle, the loudspeaker comprising:

• a transducer to radiate sound into an interior space of the vehicle;
• and
• an assembly coupled to a rear side of the transducer, the assembly comprising an enclosure and a passive radiator, the assembly disposed such that acoustic energy radiated from the rear side of the transducer passes through the enclosure and excites the passive radiator, causing the passive radiator to radiate acoustic energy to a region outside of the interior space of the vehicle,
• wherein a resonant frequency of the transducer is dependent on at least one characteristic of the passive radiator, and a resonant frequency of the enclosure is dependent on at least one characteristic of the enclosure, and
• wherein the passive radiator limits a correlation between the resonant frequency of the enclosure and the resonant frequency of the transducer.