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Knowles Speakers & Transducers

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Brand = Knowles

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Part #

Speakers & Transducers Plug 2.08 dia. 4700 Res, Yellow

BF-1923-000
Knowles
1: $2.19
244In Stock

Mfr. Part No.
BF-1923-000

Mouser Part No
721-BF-1923-000

Knowles

Speakers & Transducers Plug 2.08 dia. 4700 Res, Yellow

Datasheet

244In Stock

$2.19

$1.72

$1.57

$1.46

View

Min.: 1
Mult.: 1

Dampers

Acoustic

4.7 kOhms

Round

2.08 mm

2.44 mm

Speakers & Transducers 1.12DIA X 1.410MM SCREEN 2200 RES

BF-1995-000
Knowles
1: $2.45
550In Stock

Mfr. Part No.
BF-1995-000

Mouser Part No
721-BF-1995-000

Knowles

Speakers & Transducers 1.12DIA X 1.410MM SCREEN 2200 RES

Datasheet

550In Stock

$2.45

$1.92

$1.75

$1.63

View

Min.: 1
Mult.: 1

Dampers

Acoustic

2.2 kOhms

Round

1.12 mm

1.41 mm

Speakers & Transducers Balanced Armature Speaker

ED-21913-000
Knowles
1: $28.85
10In Stock
100Expected 17/04/2026

Mfr. Part No.
ED-21913-000

Mouser Part No
721-ED-21913-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

10In Stock

100Expected 17/04/2026

$28.85

$22.35

$20.29

$18.89

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

800 Hz

117 dBA

1.45 kOhms

Rectangular

Solder Pad

6.3 mm

4.29 mm

3.02 mm

Speakers & Transducers Balanced Armature Speaker

ED-23146-000
Knowles
1: $27.45
2In Stock

Mfr. Part No.
ED-23146-000

Mouser Part No
721-ED-23146-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

2In Stock

$27.45

$21.78

$19.91

$18.63

$17.68

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

800 Hz

104 dBA

360 Ohms

Rectangular

Solder Pad

6.3 mm

4.29 mm

3 mm

Speakers & Transducers Wideband Balanced Armature Speaker

WBFK-30000-000
Knowles
1: $27.80
18In Stock

Mfr. Part No.
WBFK-30000-000

Mouser Part No
721-WBFK-30000-000

Knowles

Speakers & Transducers Wideband Balanced Armature Speaker

Datasheet

18In Stock

$27.80

$22.06

$20.17

$18.86

$17.93

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

6.8 kHz

95 dBA

124 Ohms

Rectangular

Solder Pad

- 17 C

+ 63 C

5 mm

2.73 mm

1.93 mm

Speakers & Transducers RECEIVER ASSEMBLY

RLQ-34240-000
Knowles
1: $50.51
198In Stock

Mfr. Part No.
RLQ-34240-000

Mouser Part No
721-RLQ-34240-000

Knowles

Speakers & Transducers RECEIVER ASSEMBLY

Datasheet

198In Stock

$50.51

$40.18

$36.77

$34.93

View

Min.: 1
Mult.: 1

Earphones

Balanced Armature

126 dBA

57 Ohms

Rectangular

Speakers & Transducers RECEIVER

RDI-33438-000
Knowles
1: $53.45
72In Stock

Mfr. Part No.
RDI-33438-000

Mouser Part No
721-RDI-33438-000

Knowles

Speakers & Transducers RECEIVER

Datasheet

72In Stock

$53.45

$41.15

$37.62

$35.30

$35.22

Min.: 1
Mult.: 1

Earphones

Balanced Armature

Panel Mount

1 kHz

136 dBA

24.4 Ohms

Rectangular

Solder Pad

- 17 C

+ 63 C

7.9 mm

5.2 mm

4.1 mm

Speakers & Transducers 2.08DIA X 2.44MM PLUG, 1000 RES

BF-1860-000
Knowles
1: $2.19
541In Stock

Mfr. Part No.
BF-1860-000

Mouser Part No
721-BF-1860-000

Knowles

Speakers & Transducers 2.08DIA X 2.44MM PLUG, 1000 RES

Datasheet

541In Stock

$2.19

$1.72

$1.57

$1.46

View

Min.: 1
Mult.: 1

Dampers

Acoustic

1 kOhms

Round

2.08 mm

2.44 mm

Speakers & Transducers Balanced Armature Receiver, open vent

RAB-32033-000
Knowles
1: $20.19
25In Stock

Mfr. Part No.
RAB-32033-000

Mouser Part No
721-RAB32033000

Knowles

Speakers & Transducers Balanced Armature Receiver, open vent

Learn More

Datasheet

25In Stock

$20.19

$16.00

$14.62

$13.67

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Board Mount

11.8 kHz

106 dBA

50 Ohms

Rectangular

Solder Pad

5.15 mm

2.96 mm

2.59 mm

Speakers & Transducers Balanced Armature

HODVTEC-31618-000
Knowles
1: $45.09
8In Stock

Mfr. Part No.
HODVTEC-31618-000

Mouser Part No
721-HODVTEC31618000

Knowles

Speakers & Transducers Balanced Armature

Learn More

Datasheet

8In Stock

$45.09

$35.75

$32.81

$32.80

$30.77

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

4.324 kHz

122 dBA

25 Ohms

Rectangular

Solder Pad

- 17 C

+ 63 C

5.59 mm

4.09 mm

7.94 mm

Speakers & Transducers RECEIVER DUAL

DTEC-60040-000
Knowles
1: $48.18
90In Stock

Mfr. Part No.
DTEC-60040-000

Mouser Part No
721-DTEC-60040-000

Knowles

Speakers & Transducers RECEIVER DUAL

90In Stock

$48.18

$37.61

$34.65

$34.61

View

Min.: 1
Mult.: 1

Speakers & Transducers RECEIVER

RAQ-35091-000
Knowles
1: $9.91
56In Stock

Mfr. Part No.
RAQ-35091-000

Mouser Part No
721-RAQ-35091-000

Knowles

Speakers & Transducers RECEIVER

Datasheet

56In Stock

$9.91

$7.62

$6.93

$6.66

View

Min.: 1
Mult.: 1

Earphones

Balanced Armature

122 dBA

74 Ohms

Rectangular

Speakers & Transducers Balanced Armature Speaker

ED-29457-000
Knowles
1: $27.56
100Expected 08/05/2026

Mfr. Part No.
ED-29457-000

Mouser Part No
721-ED-29457-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

100Expected 08/05/2026

$27.56

$21.86

$19.99

$18.87

$17.68

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

800 Hz

102.5 dBA

395 Ohms

Rectangular

Solder Pad

6.3 mm

4.29 mm

3 mm

Speakers & Transducers Balanced Armature Speaker

CI-22764-000
Knowles
100: $21.66
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
CI-22764-000

Mouser Part No
721-CI-22764-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked Lead-Time 12 Weeks

$21.66

Min.: 100
Mult.: 100

Receivers

Acoustic

Board Mount

5.5 kHz

125 dBA

250 Ohms

Solder Pad

9.47 mm

7.18 mm

4.1 mm

Speakers & Transducers Balanced Armature Speaker

CI-28487-000
Knowles
100: $21.66
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
CI-28487-000

Mouser Part No
721-CI-28487-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked Lead-Time 12 Weeks

$21.66

Min.: 100
Mult.: 100

Receivers

Acoustic

5.5 kHz

128 dBA

100 Ohms

Rectangular

Wire Leads

9.47 mm

7.18 mm

4.1 mm

Speakers & Transducers Balanced Armature Speaker

ED-27926-000
Knowles
100: $17.68
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
ED-27926-000

Mouser Part No
721-ED-27926-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked Lead-Time 12 Weeks

$17.68

Min.: 100
Mult.: 100

Receivers

Balanced Armature

Board Mount

4 kHz

102.5 dBA

209 Ohms

Solder Pad

6.3 mm

4.29 mm

3 mm

Speakers & Transducers Balanced Armature Speaker

BK-21600-000
Knowles
100: $18.30
Non-Stocked

Mfr. Part No.
BK-21600-000

Mouser Part No
721-BK-21600-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$18.30

Min.: 100
Mult.: 100

Receivers

Balanced Armature

Board Mount

3.8 kHz

123 dBA

730 Ohms

Rectangular

Solder Pad

7.87 mm

5.59 mm

4 mm

Speakers & Transducers Balanced Armature Speaker

BK-21613-000
Knowles
100: $18.30
Non-Stocked

Mfr. Part No.
BK-21613-000

Mouser Part No
721-BK-21613-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$18.30

Min.: 100
Mult.: 100

Receivers

Balanced Armature

Board Mount

4 kHz

118 dBA

1.2 kOhms

Rectangular

Solder Pad

7.87 mm

5.59 mm

4 mm

Speakers & Transducers Balanced Armature Speaker

BK-23110-017
Knowles
100: $19.52
Non-Stocked

Mfr. Part No.
BK-23110-017

Mouser Part No
721-BK-23110-017

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$19.52

$19.01

Min.: 100
Mult.: 100

Receivers

Balanced Armature

Board Mount

118 dBA

1.5 kOhms

Rectangular

Solder Pad

7.87 mm

5.59 mm

4 mm

Speakers & Transducers Balanced Armature Speaker

BK-23134-000
Knowles
100: $18.30
Non-Stocked

Mfr. Part No.
BK-23134-000

Mouser Part No
721-BK-23134-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$18.30

Min.: 100
Mult.: 100

Receivers

Balanced Armature

Board Mount

4 kHz

118 dBA

730 Ohms

Rectangular

Solder Pad

7.87 mm

5.59 mm

4 mm

Speakers & Transducers Balanced Armature Speaker

BK-26773-000
Knowles
100: $18.30
Non-Stocked

Mfr. Part No.
BK-26773-000

Mouser Part No
721-BK-26773-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$18.30

Min.: 100
Mult.: 100

Receivers

Board Mount

115 Ohms

Solder Pad

7.87 mm

5.59 mm

4 mm

Speakers & Transducers Balanced Armature Speaker

BK-29725-000
Knowles
100: $18.14
Non-Stocked

Mfr. Part No.
BK-29725-000

Mouser Part No
721-BK-29725-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$18.14

$18.09

$18.08

Min.: 100
Mult.: 100

Receivers

Balanced Armature

Board Mount

4 kHz

122.5 dBA

640 Ohms

Rectangular

Solder Pad

7.87 mm

5.59 mm

4.01 mm

Speakers & Transducers Balanced Armature Speaker

CI-22748-000
Knowles
100: $21.66
Non-Stocked

Mfr. Part No.
CI-22748-000

Mouser Part No
721-CI-22748-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$21.66

Min.: 100
Mult.: 100

Receivers

Acoustic

Board Mount

5.5 kHz

128 dBA

250 Ohms

Solder Pad

9.47 mm

7.18 mm

4.1 mm

Speakers & Transducers Balanced Armature Speaker

CI-28352-000
Knowles
100: $21.66
Non-Stocked

Mfr. Part No.
CI-28352-000

Mouser Part No
721-CI-28352-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$21.66

Min.: 100
Mult.: 100

Receivers

Acoustic

Board Mount

5.5 kHz

128 dBA

68 Ohms

Rectangular

Solder Pad

9.47 mm

7.18 mm

4.1 mm

Speakers & Transducers Balanced Armature Speaker

CI-28597-000
Knowles
100: $21.66
Non-Stocked

Mfr. Part No.
CI-28597-000

Mouser Part No
721-CI-28597-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Non-Stocked

$21.66

Min.: 100
Mult.: 100

Receivers

Acoustic

Board Mount

5.5 kHz

128 dBA

68 Ohms

Rectangular

Solder Pad

9.47 mm

7.18 mm

4.1 mm

Knowles Speakers & Transducers

Customer Service Office

Company

Resources

Support

70 Hz to 9.9 kHz
470 Hz
500 Hz
800 Hz
1 kHz
3.4 kHz
3.8 kHz
4 kHz
4.324 kHz
4.4 kHz
4.5 kHz
5 kHz
5.2 kHz
5.3 kHz
5.4 kHz
5.5 kHz
5.6 kHz
5.8 kHz
6 kHz
6.1 kHz

91 dBA
95 dBA
96 dBA
100 dBA
101 dBA
101.5 dBA
102.5 dBA
104 dBA
105.5 dBA
106 dBA
106.5 dBA
107 dBA
108 dBA
111.5 dBA
113.5 dBA
114 dBA
115 dBA
116 dBA
117 dBA
118 dBA

7 Ohms
7.1 Ohms
10.2 Ohms
13.3 Ohms
14 Ohms
14.5 Ohms
15.2 Ohms
17 Ohms
22 Ohms
23 Ohms
24.4 Ohms
25 Ohms
28 Ohms
28.125 Ohms
30 Ohms
31.5 Ohms
37 Ohms
40.5 Ohms
41 Ohms
43 Ohms

1.41 mm
1.57 mm
1.65 mm
2.44 mm
3.86 mm
5 mm
5.09 mm
5.15 mm
5.16 mm
5.17 mm
5.18 mm
5.19 mm
5.28 mm
5.3 mm
5.59 mm
6.3 mm
6.32 mm
7.87 mm
7.9 mm
9.47 mm

1.93 mm
1.98 mm
2.58 mm
2.59 mm
2.6 mm
2.73 mm
2.97 mm
3 mm
3.02 mm
3.8 mm
4 mm
4.01 mm
4.06 mm
4.1 mm
4.19 mm
4.36 mm
5.02 mm
5.03 mm
5.59 mm
6.3 mm