Knowles dampers for earphone tuning

Dampers are acoustic cloth screens for insertion inside acoustic tubing. These damping elements are used between the receiver outlet and the ear canal to smoothen the frequency response ( tune receiver's response curve resonance peaks ). Various acoustical resistances and sizes are available, different damper diameters, and different damper positioning is examined via numerous examples.

Features:

1, Smoothen and shape frequency response 2, Various acounstical resistances and saizes

Optional dampers:

Green damper fit for low frequency unit, White damper fit for high frequency unit, Red damper fit for multi-frequency low frequency unit. Brown damper: SE420, SE846 Green damper:SE210 SE310 E3C E4C Etymotic ER4 series. White damper:SE530 SE535 E5C SCL5 Westone UM3x ER6i

Package includes:

2 PCS x Knowles dampers

Tips:

Mostly, we use the dmaper mounting tool to position the damper into tubing, and sometimes, you may need to replace the damper, so we better position the cloth to be facing towards the driver

 

PAYMENT

1.We accept the payment via Paypal, PayPal is safest, quickest and secure for seller and buyer.
2.All major credit cards are accepted through secure payment processor PayPal.
3.Payment must be received within 7 business days of auction closing.
SHIPMENT

1.We accept the payment via Paypal, PayPal is safest, quickest and secure for seller and buyer.

2.Tracking info of your parcel is available.

3.Returns could be accepted within 60 days after receipt of the item.

4.Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer is responsibility.

Please check with your country is customs office to determine what these additional costs will be prior to bidding/buying.

Destination
Delivery Time
Working Days
7-12
10-15
15-25
25-40
>50
US
Item arrived
80%
10%
8%
1%
Refund
ASIA
Item arrived
30%
40%
20%
10%
Refund
EU
Item arrived
20%
20%
50%
10%
Refund
AU
Item arrived
30%
30%
20%
20%
Refund
Other Countries
Item arrived
5%
10%
10%
60%
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RETURN & REFUND POLICY

We accept returned in some exceptional cases, please send message before return item(s) otherwise returned item(s) will not be accepted.

Buyer is responsible for return shipping cost and we will ship the replacement or make the refund within 2 days after returned item is received. 

If it is our fault, we will be responsible for the return postage.
FEEDBACK

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If you are dissatisfied for any reason, please don't be quick to leave negative/neutral feedback or open a dispute. We work hard to make sure
EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers.
If you are satisfied with the product you received, please leave us positive feedback and 5 scores DSR.