Ranvo T9 Inverter Tube Speaker Port - 6-10 Inch Inverted-Phase Speaker Adapter (71mm Opening) for Home Theater & Car Audio Systems

Feature:1. Made of ABS plastic material, sturdy and durable, suitable for 6-10inch speaker.2. Adopt exquisite workmanship, perfectly fit your speaker, to use.3. The inner wall is smooth, with both ends designed as horn mouth. Smooth airflow, obviously reducing the sound.4. The speaker phase-inverting hole, also called sound tube or air hole, is often used in the inverted-phase speaker.5. The inverter tube is mainly to pour the sound pressure of the airflow vibrating inside to the front, and overlap with the sound pressure radiated from the speaker to make a bass effect.Specification:@font-face{font-family:"Times New Roman";}@font-face{font-family:"宋体";}@font-face{font-family:"Calibri";}@font-face{font-family:"Arial";}@font-face{font-family:"Tahoma";}p.MsoNormal{mso-style-name:正文;mso-style-parent:"";margin:0pt;margin-bottom:.0001pt;mso-pagination:none;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;mso-fareast-font-family:宋体;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;}span.msoIns{mso-style-name:"";text-decoration:underline;text-underline:single;color:blue;}span.msoDel{mso-style-name:"";text-decoration:line-through;color:red;}@page{mso-page-border-surround-header:no; mso-page-border-surround-footer:no;}@page Section0{}div.Section0{page:Section0;}nverter (as shown)71mm/2.8inCompatibility:

Made of ABS plastic material, sturdy and durable, suitable for 6-10inch speaker.

Made of ABS plastic material, sturdy and durable, suitable for 6-10inch speaker.

Adopt exquisite workmanship, perfectly fit your speaker, to use.

The inverter tube is mainly to pour the sound pressure of the airflow vibrating inside to the front, and overlap with the sound pressure radiated from the speaker to make a bass effect.

The inner wall is smooth, with both ends designed as horn mouth. Smooth airflow, obviously reducing the sound.

The speaker phase-inverting hole, also called sound tube or air hole, is often used in the inverted-phase speaker.