1pcs Speaker Inverted Tube Inverted Hole Hole Sound Guide Tube

Description

Anti-phase sound waves radiated from the paper cone into the box
After the action of the box, and then radiating outward through the reverse tube
Some of the lower frequency sound waves can be close to the same frequency sound waves radiated in front of the paper cone
As a result, the radiation efficiency of the loudspeaker is increased, resulting in an extended low-frequency response.
Compared with speakers without an inverted tube, this structure can significantly enhance the radiation intensity of low frequencies
Increase the volume, improve the efficiency of the speaker, in layman's terms, you can increase the volume of the bass
without increasing the power of the speaker itself
Package Including:
Speaker Port Tube  x 1pcs
Payment:
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Payment must be completed within 7 days.
PLEASE NOTE: S&H DOES NOT INCLUDE DUTIES, LOCATL TAXES OR ANY OTHER IMPORTATION FEES.
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Shipping:
We Ship to Worldwide.
Orders processed within 24-48 hours of payment verification. it will take 15-25 days for delivery. but Customs will random inspection some parcel, so that's why some parcel need more than four weeks to arrive. Shipping time is only estimated and not guaranteed.
We only ship to confirmed PAYPAL addresses. Your PAYPAL address MUST MATCH your Shipping address.
Package to USA will Shipping by E-Package with Tracking Number(7-15 Days to Delivered). To other Countries will shipping by Post Air Mail without tracking number(ONLY when the order is over 20USD will supply Tracking Number Shipping Way!)(15-35 Days to Delivered)
Items are shipped via China Post Air Mail.
Guarantee
:
Good Good quality. Buy with confidence!
If you are not satisfied when you receive your item, please return it within 7 days for a replacement or money back. Please contact me before you return it.
Not accept returning of electronic components.
Full refund after we receive our original item, Note: Return shipping is to be paid by the Buyer.
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