The Vented-box Effect on Thiele-small Parameter Loudspeaker

Abstract

Abstract Loudspeaker testing is usually using the Thiele-small parameter. To see the effect of the vented box on loudspeaker quality, Thiele-small parameters in vented box boxes are used. Research carried out by measuring the characteristics of loudspeaker response frequency, impedance, and Thiele small parameters in vented-boxes and panels. One factor affecting the acoustic parameters is the compressed air value generated by the loudspeaker or so-called air compliance. In vented-boxes, there is an effect of compressed air compliance in the box and the air coming from the hole which is causing the pure loudspeaker sound trigger. On the panel, there is no compressed air. From the measurement and results analysis, the ratio of compliance from the box is 8.29: 10.7. This value has impacted the losses of the vented-box. The losses of the vented-box are 0.63% and the losses that happened on the panel is 0,014%. The losses of the enclosure are caused by the shape of the enclosure design and the damping material in it.