Speaker system

1. A speaker system, comprising:

a case defining a center hole and a body surrounding the center hole, the body including a sidewall defining a first hole;

an electroacoustic transducer received in the center hole of the case;

a microphone defining an opening hole;

the body of the case further defining a bottom extending outwards from the sidewall, the bottom including a second hole;

a projecting element extending upwardly from the bottom and opposite to the sidewall;

a slot formed between the projecting element and the sidewall for receiving the microphone therein;

an inward channel defined in the sidewall for communicating the first hole with the second hole; wherein

the opening hole of the microphone faces the inward channel in the sidewall for communicating with the environment air; and

a PCB defines a first plate positioned between the microphone and the sidewall and a second plate positioned between the microphone and the bottom, the first plate defining a third hole communicating with the opening hole of the microphone and the first hole.

2. The speaker system as described in claim 1 , wherein the projecting element comprises a first portion, a second portion, and a notch between the first portion and the second portion.

3. The speaker system as described in claim 2 , wherein the first portion comprises a first side towards the sidewall and a second side parallel to the sidewall and upright to the first side.

4. The speaker system as described in claim 3 , wherein the second portion comprises a third side towards the sidewall and a fourth side parallel to the sidewall and upright to the first side.

5. The speaker system as described in claim 4 , wherein the second plate further defines a narrow portion positioned in the notch.