Abstract: This application provides a combined-type phase plug, and a compression driver and a speaker using same. The combined-type phase plug of this application includes a first phase plug and a second phase plug. The first phase plug includes a cone, a plurality of fins, and a base ring. The plurality of fins is located on an outer surface of the cone. The base ring is located below the cone, and the plurality of fins extends downward to the base ring. The base ring is connected to the plurality of fins but is not connected to the cone. That is, the cone and the base ring are connected only by the plurality of fins. The second phase plug is located under the first phase plug. The second phase plug includes a tapered cone and a base. The tapered cone is located inside the base ring, and a first space is formed between the tapered cone and the base ring. A second space is formed between the tapered cone and the cone, and the second space extends to the first space.

Abstract: The utility model provides a compressor system with an equalizer (EQ). The compressor system includes a signal input device in signal communication with the EQ and a compressor. The compressor system further includes a signal output device in signal communication with the compressor. The compressor includes a signal detection module. In the system, an electrical level threshold of a full-band audio signal is setup in the compressor, and the value of electrical level of the input signal is detected by the signal detection module. After comparison of electrical level threshold and the value of electrical level, the system determines whether the compressor is activated or deactivated. The system can achieve the technology effect of effectively compressing and limiting the audio signal of a different frequency.