Speaker cabinet (Close-back)

A close-back speaker cabinet. Volume is 4.2L(the speaker body consumes about 0.2L). A 4 inch full-range speaker is suitable(check the datasheet for volume requirement). The rounded shape is better then box shape on structural resonance control.

Example speaker: https://item.taobao.com/item.htm?spm=a1z09.2.0.0.74982e8d40YT5u&id=554473912710

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一个封闭式音箱箱体。容积4.2L(考虑到扬声器会挤占0.2L左右)。适合安装4寸全频喇叭（参考datasheet对容积的要求）。圆形的形状比六面箱体更有利于避免谐振。

扬声器范例: https://item.taobao.com/item.htm?spm=a1z09.2.0.0.74982e8d40YT5u&id=554473912710