Rainbow Electronics MG260 User Manual
Page 69
MG260 Product Specification
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2.9.6.2 Speaker outputs
Speaker gain vs Max output voltage
Receive Gain (dB) (*)
Max output level
(Vrms)
Max.speaker load (
Ω)
+2
1.74
150
0
1.38
50
-2
1.099
32
-4
0.873
32
-6
0.693
32
-8
0.551
32
-10
0.437
32
-12
0.347
32
-14
0.276
32
-16
0.219
32
-18
0.174
32
-20
0.138
32
-22
0.110
32
-24
0.087
32
-26
0.069
32
-26
0.069
32
(*) analog gain: might not be significant
The control of the receive gain is done by AT commands.
Recommended characteristics for the speaker:
Type
10 mW, electro-magnetic
Impedance
32 to 150
Sensitivity
110 dB SPL min. (0 dB = 20 µPa)
Frequency response
compatible with the GSM specifications