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Knowles Speakers & Transducers

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Manufacturer = Knowles

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Part #

Speakers & Transducers WIDE BANDWIDTH, WARM BASS, HIGH OUTPUT

HE-31751-000
Knowles
1: ¥9,265.1
23In Stock

Mfr. Part #
HE-31751-000

Mouser Part #
721-HE-31751-000

Knowles

Speakers & Transducers WIDE BANDWIDTH, WARM BASS, HIGH OUTPUT

Datasheet

23In Stock

¥9,265.1

¥7,222

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

10 kHz

132 dBA

118.1 Ohms

Rectangular

Solder Pad

0 C

+ 63 C

9.47 mm

7.18 mm

7.26 mm

Speakers & Transducers Balanced Armature Speaker

FC-30814-P127
Knowles
1: ¥6,718.7
11In Stock

Mfr. Part #
FC-30814-P127

Mouser Part #
721-FC30814P127

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

11In Stock

¥6,718.7

¥5,134.2

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

106.5 dBA

51.8 Ohms

Rectangular

Wire Leads

5.17 mm

3.53 mm

3 mm

Speakers & Transducers Balanced Armature Speaker

CI-22955-000
Knowles
1: ¥6,037.7
581In Stock

Mfr. Part #
CI-22955-000

Mouser Part #
721-CI-22955-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

581In Stock

¥6,037.7

¥4,649.1

¥4,228.9

¥3,941.6

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

5.5 kHz

133 dBA

80 Ohms

Rectangular

Solder Pad

- 17 C

+ 63 C

9.5 mm

7.2 mm

4.1 mm

Speakers & Transducers RECEIVER

RAN-33860-B148
Knowles
1: ¥3,145.9
258In Stock

Mfr. Part #
RAN-33860-B148

Mouser Part #
721-RAN-33860-B148

Knowles

Speakers & Transducers RECEIVER

Datasheet

258In Stock

¥3,145.9

¥2,446.7

¥2,220.8

¥2,069.6

View

Min.: 1
Mult.: 1

Earphones

Balanced Armature

108 dBA

14 Ohms

Rectangular

Speakers & Transducers RECEIVER

RAQ-33862-B148
Knowles
1: ¥1,684.3
598In Stock

Mfr. Part #
RAQ-33862-B148

Mouser Part #
721-RAQ-33862-B148

Knowles

Speakers & Transducers RECEIVER

Datasheet

598In Stock

¥1,684.3

¥1,303.9

¥1,182.6

¥1,099.6

View

Min.: 1
Mult.: 1

Speakers & Transducers RECEIVER ASSEMBLY

RAU-34832-B148
Knowles
1: ¥7,859.9
85In Stock

Mfr. Part #
RAU-34832-B148

Mouser Part #
721-RAU-34832-B148

Knowles

Speakers & Transducers RECEIVER ASSEMBLY

Datasheet

85In Stock

¥7,859.9

¥6,150.7

¥5,600.9

¥5,222.2

¥4,963.1

Min.: 1
Mult.: 1

Earphones

Balanced Armature

122 dBA

14 Ohms

Rectangular

Speakers & Transducers RECEIVER

RDI-34006-000
Knowles
1: ¥8,494.4
63In Stock
100Expected 10/23/2026

Mfr. Part #
RDI-34006-000

Mouser Part #
721-RDI-34006-000

Knowles

Speakers & Transducers RECEIVER

Datasheet

63In Stock

100Expected 10/23/2026

¥8,494.4

¥6,650.6

¥6,122.4

¥5,649.1

View

Min.: 1
Mult.: 1

Earphones

Balanced Armature

141 dBA

25 Ohms

Rectangular

Speakers & Transducers 1.12DIA X 1.410MM SCREEN 680 RES

BF-1988-000
Knowles
1: ¥453.5
1,012In Stock
990On Order

Mfr. Part #
BF-1988-000

Mouser Part #
721-BF-1988-000

Knowles

Speakers & Transducers 1.12DIA X 1.410MM SCREEN 680 RES

Datasheet

1,012In Stock

990On Order

¥453.5

¥347.1

¥313.9

¥290.7

View

Min.: 1
Mult.: 1

Dampers

Acoustic

680 Ohms

Round

1.12 mm

1.41 mm

Speakers & Transducers Balanced Armature Speaker

ED-21913-000
Knowles
1: ¥4,934.8
Lead-Time 12 Weeks

Mfr. Part #
ED-21913-000

Mouser Part #
721-ED-21913-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

Lead-Time 12 Weeks

¥4,934.8

¥3,848.5

¥3,499.7

¥3,378.5

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 Receiver,level sound

RAB-32063-000
Knowles
1: ¥3,802
112In Stock
100Expected 9/25/2026

Mfr. Part #
RAB-32063-000

Mouser Part #
721-RAB-32063-000

Knowles

Speakers & Transducers Balanced Armature Receiver,level sound

Learn More

Datasheet

112In Stock

100Expected 9/25/2026

¥3,802

¥2,903.4

¥2,631

¥2,451.6

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

10.8 kHz

116 dBA

41 Ohms

Rectangular

Solder Pad

0 C

+ 63 C

5.15 mm

2.96 mm

2.6 mm

Speakers & Transducers Balanced Armature Receiver

RAB-32066-000
Knowles
1: ¥3,639.3
913In Stock

Mfr. Part #
RAB-32066-000

Mouser Part #
721-RAB-32066-000

Knowles

Speakers & Transducers Balanced Armature Receiver

Learn More

Datasheet

913In Stock

¥3,639.3

¥2,822

¥2,561.3

¥2,385.2

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

6.1 kHz

101.5 dBA

135 Ohms

Rectangular

Solder Pad

0 C

+ 63 C

5.3 mm

3.28 mm

2.73 mm

Speakers & Transducers Balanced Armature Receiver, warm bass

RAB-32257-000
Knowles
1: ¥3,685.8
207In Stock
200Expected 9/4/2026

Mfr. Part #
RAB-32257-000

Mouser Part #
721-RAB32257000

Knowles

Speakers & Transducers Balanced Armature Receiver, warm bass

Learn More

Datasheet

207In Stock

200Expected 9/4/2026

¥3,685.8

¥2,812.1

¥2,549.6

¥2,375.2

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

11 kHz

105.5 dBA

48 Ohms

Rectangular

Solder Pad

0 C

+ 63 C

5.15 mm

2.96 mm

2.6 mm

Speakers & Transducers dual balanced armature receiver

TWFK-30017-000
Knowles
1: ¥10,213.5
141In Stock

Mfr. Part #
TWFK-30017-000

Mouser Part #
721-TWFK-30017-000

Knowles

Speakers & Transducers dual balanced armature receiver

Datasheet

141In Stock

¥10,213.5

¥8,006

¥7,293.5

¥7,109.1

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

6.5 kHz

117 dBA

43 Ohms

Rectangular

Solder Pad

0 C

+ 63 C

5 mm

2.73 mm

4.36 mm

Speakers & Transducers Wideband Balanced Armature Speaker

WBFK-30095-000
Knowles
1: ¥5,112.6
90In Stock

Mfr. Part #
WBFK-30095-000

Mouser Part #
721-WBFK-30095-000

Knowles

Speakers & Transducers Wideband Balanced Armature Speaker

Datasheet

90In Stock

¥5,112.6

¥3,949.9

¥3,581.1

¥3,336.9

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

7.4 kHz

91 dBA

14.5 Ohms

Rectangular

Solder Pad

- 17 C

+ 63 C

5 mm

2.73 mm

1.98 mm

Speakers & Transducers RECEIVER ASSEMBLY

RDU-35000-000
Knowles
1: ¥11,630.3
108In Stock

Mfr. Part #
RDU-35000-000

Mouser Part #
721-RDU-35000-000

Knowles

Speakers & Transducers RECEIVER ASSEMBLY

Datasheet

108In Stock

¥11,630.3

¥9,032.5

¥8,231.9

¥7,705.4

View

Min.: 1
Mult.: 1

Earphones

Balanced Armature

127 dBA

7 Ohms

Rectangular

Speakers & Transducers RECEIVER ASSEMBLY

RLQ-34240-000
Knowles
1: ¥9,027.5
194In Stock

Mfr. Part #
RLQ-34240-000

Mouser Part #
721-RLQ-34240-000

Knowles

Speakers & Transducers RECEIVER ASSEMBLY

Datasheet

194In Stock

¥9,027.5

¥7,070.9

¥6,439.7

¥6,215.5

View

Min.: 1
Mult.: 1

Earphones

Balanced Armature

126 dBA

57 Ohms

Rectangular

Speakers & Transducers Balanced Armature Speaker

BK-26824-000
Knowles
1: ¥5,203.9
456In Stock

Mfr. Part #
BK-26824-000

Mouser Part #
721-BK-26824-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

456In Stock

¥5,203.9

¥4,024.6

¥3,740.6

¥3,483.1

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

5.6 kHz

127 dBA

22 Ohms

Rectangular

Solder Pad

- 17 C

+ 63 C

7.9 mm

5.6 mm

4 mm

Speakers & Transducers Balanced Armature Speaker

CI-22960-000
Knowles
1: ¥5,906.5
74In Stock

Mfr. Part #
CI-22960-000

Mouser Part #
721-CI-22960-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

74In Stock

¥5,906.5

¥4,614.3

¥4,197.3

¥3,911.7

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

500 Hz

127 dBA

264 Ohms

Rectangular

Solder Pad

- 17 C

+ 63 C

9.47 mm

7.18 mm

4.19 mm

Speakers & Transducers Balanced Armature Speaker

ED-23147-000
Knowles
1: ¥5,049.4
184In Stock

Mfr. Part #
ED-23147-000

Mouser Part #
721-ED-23147-000

Knowles

Speakers & Transducers Balanced Armature Speaker

Datasheet

184In Stock

¥5,049.4

¥3,878.4

¥3,516.3

¥3,278.8

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

1 kHz

115 dBA

87 Ohms

Rectangular

Solder Pad

6.3 mm

4.29 mm

3.02 mm

Speakers & Transducers VERY SMALL DUEL BASS EMPHASIS

DWFK-31785-000
Knowles
1: ¥11,115.4
146In Stock

Mfr. Part #
DWFK-31785-000

Mouser Part #
721-DWFK-31785-000

Knowles

Speakers & Transducers VERY SMALL DUEL BASS EMPHASIS

Datasheet

146In Stock

¥11,115.4

¥8,675.4

¥7,893.1

¥7,469.5

View

Min.: 1
Mult.: 1

Receivers

Balanced Armature

Panel Mount

6.5 kHz

120 dBA

30 Ohms

Rectangular

Solder Pad

5 mm

2.73 mm

3.8 mm

Speakers & Transducers Balanced Armature

HODVTEC-31618-000
Knowles
1: ¥8,067.5
50In Stock

Mfr. Part #
HODVTEC-31618-000

Mouser Part #
721-HODVTEC31618000

Knowles

Speakers & Transducers Balanced Armature

Learn More

Datasheet

50In Stock

¥8,067.5

¥6,315.1

¥5,748.7

¥5,361.7

View

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 Plug 2.08 dia. 680 Res, White

BF-1859-000
Knowles
1: ¥405.3
821In Stock
7,274On Order

Mfr. Part #
BF-1859-000

Mouser Part #
721-BF-1859-000

Knowles

Speakers & Transducers Plug 2.08 dia. 680 Res, White

Datasheet

821In Stock

7,274On Order

¥405.3

¥310.6

¥280.7

¥260.8

View

Min.: 1
Mult.: 1

Dampers

Acoustic

680 Ohms

Round

2.08 mm

2.44 mm

Speakers & Transducers Plug 2.08 dia. 1500 Res, Green

BF-1861-000
Knowles
1: ¥405.3
475In Stock

Mfr. Part #
BF-1861-000

Mouser Part #
721-BF-1861-000

Knowles

Speakers & Transducers Plug 2.08 dia. 1500 Res, Green

Datasheet

475In Stock

¥405.3

¥310.6

¥280.7

¥260.8

View

Min.: 1
Mult.: 1

Dampers

Acoustic

1.5 kOhms

Round

2.08 mm

2.44 mm

Speakers & Transducers Plug 2.08 dia. 4700 Res, Yellow

BF-1923-000
Knowles
1: ¥405.3
100In Stock
400On Order

Mfr. Part #
BF-1923-000

Mouser Part #
721-BF-1923-000

Knowles

Speakers & Transducers Plug 2.08 dia. 4700 Res, Yellow

Datasheet

100In Stock

400On Order

¥405.3

¥310.6

¥280.7

¥260.8

View

Min.: 1
Mult.: 1

Dampers

Acoustic

4.7 kOhms

Round

2.08 mm

2.44 mm

Speakers & Transducers Balanced Armature Receiver, open vent

RAB-32033-000
Knowles
1: ¥3,639.3
12In Stock

Mfr. Part #
RAB-32033-000

Mouser Part #
721-RAB32033000

Knowles

Speakers & Transducers Balanced Armature Receiver, open vent

Learn More

Datasheet

12In Stock

¥3,639.3

¥2,822

¥2,561.3

¥2,385.2

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

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