The sound guide tube is inverted to the tube to the phase hole 4-12 inch audio subwoofer, pointing to the tube speaker, exhaling, exhaling, exhalating, exhalating, exhalating, exhalating, exhalating, exhalating
Small (suitable for 3-5 inches)Medium (suitable for 5-6 inches)Large(suitable for 6-10 inches)Extra large(suitable for 8-18 inches)Black Extra large(suitable for 8-18 inches)Orange extra large (suitable for 8-18 inches) Black extra large (suitable for 8-18 inches) Orange extra large (suitable for 8-18 inches) Black extra large (suitable for 8-18 inches)
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