BK-21941-000

$11.01

Description：SPEAKR 3.56 KOHM SIDE PORT 118DB
Series：BK
Mfr：Knowles
Package：Bulk

SKU:28a62a2b930e Category: Speakers Brand: Knowles

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Product introduction

Product Detailed Parameters

Description：SPEAKR 3.56 KOHM SIDE PORT 118DB
Series：BK
Mfr：Knowles
Package：Bulk
Type：Receiver, Balanced Armature
Technology：Magnetic
Impedance：3.56 kOhms
Power - Max：-
Shape：Rectangular
Termination：Solder Pads
Size / Dimension：-
Height - Seated (Max)：-
Frequency - Self Resonant：-
Efficiency - dBA：118
Efficiency - Testing：-
Efficiency - Type：-
Port Location：Side
Material - Cone：-
Material - Magnet：-
Ingress Protection：-
Ratings：-
Frequency Range：-
Power - Rated：-

Download product information

BK-21941-000

Overview

The Knowles BK-21941-000 is a balanced armature speaker featuring a side port configuration. It exhibits an impedance of 3.56 kOhms and delivers a sound pressure level of 118 dB. The component measures 7.87 mm in length. This device is RoHS compliant and lead-free, designed for high-output audio applications requiring precise acoustic performance within compact form factors.

Feature Summary

Balanced armature transducer technology
Side port acoustic design
High sensitivity output capability

Applications

Hearing aid devices
Medical audio equipment
Compact consumer electronics

Procurement Notes

Verify the specific datasheet version to confirm impedance and SPL tolerances. Ensure the side port orientation matches the enclosure design. Confirm RoHS compliance status with the manufacturer for regulatory requirements. Check for any specific handling instructions regarding the balanced armature mechanism during assembly.

Selection Notes

Select this component when high sound pressure level is required in a small package. The 3.56 kOhm impedance suits specific driver circuits. Consider the side port layout for acoustic integration. Verify compatibility with existing hearing aid or medical device architectures before finalizing the design.

Part Context

This part belongs to Knowles' balanced armature speaker lineup. It is distinct from dynamic drivers due to its magnetic structure. The model number indicates specific acoustic tuning. It serves niche markets requiring high fidelity in miniature sizes.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Consult Knowles directly for equivalent components with matching impedance and SPL characteristics.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.