Rainbow Electronics MG260 - 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