A buried utility locator system, comprising: a buried utility locator, including: a housing; a magnetic field antenna array (710, 712) disposed on or in the housing for receiving magnetic field signals emitted from a hidden or buried conductor based on current flow therein and providing corresponding electrical output signals; and a utility locator electronics circuit disposed on or in the housing and operatively coupled to the magnetic field antenna array output to receive the electrical output signals and generate information about the hidden or buried conductor; an audio signal generator and audio amplifier operatively coupled to the utility locator electronics circuit to generate and provide an audio output signal associated with operation of the utility locator; and an audio speaker device (100, 600, 800, 1310, 1500), comprising: a speaker enclosure (110, 810, 1510); input wiring operatively coupled to the audio output signal; a first loudspeaker driver (210a, 610a, 910a, 1610a) having terminals operatively coupled to the input wiring to receive the audio output signal with a first polarity; and a second loudspeaker driver (210b, 610b, 910b, 1610b), of the same type as the first loudspeaker driver, having terminals operatively coupled to the input wiring to receive the audio output signal with a second polarity; wherein the first loudspeaker driver and the second loudspeaker driver are positioned within the speaker enclosure so as to at least partially cancel alternating current magnetic field signals emitted therefrom over a predefined frequency or range of frequencies overlapping the frequency or range of frequencies emitted from the hidden or buried conductor. a buried utility locator, including: a housing; a magnetic field antenna array (710, 712) disposed on or in the housing for receiving magnetic field signals emitted from a hidden or buried conductor based on current flow therein and providing corresponding electrical output signals; and a utility locator electronics circuit disposed on or in the housing and operatively coupled to the magnetic field antenna array output to receive the electrical output signals and generate information about the hidden or buried conductor; a housing; a magnetic field antenna array (710, 712) disposed on or in the housing for receiving magnetic field signals emitted from a hidden or buried conductor based on current flow therein and providing corresponding electrical output signals; and a utility locator electronics circuit disposed on or in the housing and operatively coupled to the magnetic field antenna array output to receive the electrical output signals and generate information about the hidden or buried conductor; an audio signal generator and audio amplifier operatively coupled to the utility locator electronics circuit to generate and provide an audio output signal associated with operation of the utility locator; and an audio speaker device (100, 600, 800, 1310, 1500), comprising: a speaker enclosure (110, 810, 1510); input wiring operatively coupled to the audio output signal; a first loudspeaker driver (210a, 610a, 910a, 1610a) having terminals operatively coupled to the input wiring to receive the audio output signal with a first polarity; and a second loudspeaker driver (210b, 610b, 910b, 1610b), of the same type as the first loudspeaker driver, having terminals operatively coupled to the input wiring to receive the audio output signal with a second polarity; a speaker enclosure (110, 810, 1510); input wiring operatively coupled to the audio output signal; a first loudspeaker driver (210a, 610a, 910a, 1610a) having terminals operatively coupled to the input wiring to receive the audio output signal with a first polarity; and a second loudspeaker driver (210b, 610b, 910b, 1610b), of the same type as the first loudspeaker driver, having terminals operatively coupled to the input wiring to receive the audio output signal with a second polarity; wherein the first loudspeaker driver and the second loudspeaker driver are positioned within the speaker enclosure so as to at least partially cancel alternating current magnetic field signals emitted therefrom over a predefined frequency or range of frequencies overlapping the frequency or range of frequencies emitted from the hidden or buried conductor.