Viva Audio Nuda

http://www.monoandstereo.com/2017/07/viva-audio-nuda-horn-speaker-system.html?utm_source=dlvr.it&utm_medium=facebook

順便一提，注意看三個號角的發生點擺在垂直線上，如此相位才一致；
可別學老頭子亂搞啊...