product

Customer Name

 Part No

RC-BC70B

Customer’s Model

Description

 Bone conduction transducer 8Ω0.5W

NO.

Test Item

Specifications

Test condition

1

Impedance

8 Ω±15%

AT 800 HZ

2

DCR

8 Ω±15%

AT 800 HZ

3

Operation

Must be normal

Program source 0.5W

4

Sweep test

Must be normal

Sine wave

2 V  170HZ-15KHZ

5

F0

170HZ ±20%

Without baffle

6

Sensitivity

83±3dB average at

500,2k,4k,10kHZ

At 0.3 V axis calculated

From 0.1MM

7

Rated freq.response

Fo-----15KHZ

Sensitivity –10 dB

8

Power input

Normal 0.5W

Maximum 1W

9

Distortion

5% MAX

At 1KHZ 0.01M 0.5W

10

Life test

After test,meet Item 3,4&5

Pink noies   0.5W  24 hrs

170HZ-15KHZ

11

Heat test

After test,meet Item 3,4&5

72±2℃;20-50%AR.H.48hrs

12

Humidity test

After test,meet Item 3,4&5

40±2℃;90-95%AR.H.48hrs

13

Cold test

After test,meet Item 3,4&5

-25±3℃;  -%AR.H.16hrs

14

Slide Shock Test

Must be normal

Coasts from 1meter long slide along  75 angles

15

Magnet

Ne-Fe-B    Hard Ferrite   oz or    g

16

Flux density

Gauss

17

Net Weight

2g or       0.123 oz

18

Polarity

When a positive volts d.c.is supplied from the speaker terminal marked(+)and a Negative volts to the other terminal the diaphram must move toward the front

19

Dimension

D:16.75mm，H:6.1mm

20

Voice

21

Use