Feature(may vary by option.)

●This product can be adjusted by placing the included felt or rubber sold at hardware stores, and adjusting the amount of this product allows you to adjust the sealing and dumped bass reflection, or lowering the resonance point of the duct
●This product will help you solve those who suffer from low-frequency adjustments, such as those who are concerned about low-field bonts, and want to extend the low end, and dont work well with subwoofers
●The material used in the bag is black saranet, so there is no negative effect on the sound. The speaker looks even better when you put felt or rubber directly into the bass reflector
●Sealing: Use it to adjust the low frequency when the low frequency becomes too much in the overall area by adding subwoofers. Damped bass reflex when you dont want to drop the low frequency amount as tightly as a seal. Adjust the amount of felt to drop the low beam Fd adjustment: Put a 0.08 - 0.12 inch (2 - 3 mm) rubber sheet in the bag for Fd. Reduced bonding and low end stretch

[Φ50mm]

[Φ35mm]

Description

This product can be adjusted by placing the included felt or rubber sold at hardware stores, and adjusting the amount of this product allows you to adjust the sealing and dumped bass reflection, or lowering the resonance point of the duct.