| 摘要 |
An amplifying loudspeaker apparatus for an existing host device comprises a sensor coil for receiving an audio signal in electromagnetic form from an internal loudspeaker of the host device; a pre-amplifier and equalizer module connected to the sensor coil for amplifying and equalizing the audio signal to a suitable level and frequency response; and an audio power amplifier and a loudspeaker to reproduce the sound for the audio signal. |
