Sound Decoder: SDH164D SoundFX
Wired Mobile Decoder fopr HO Locomotives
Master Volume: CV58=9 to 15, Diesel CV60=1, Bell CV141=64Max., Horn CV142=64 Max.
Speaker: 4 inch Dia. 8 Ohm Speaker, 4 Watts with a 3.3 Ohm resistor in series.
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Diesel Horn |
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880Tone Sine Wav. |
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Horn & 880 Hz together |
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Factor |
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dB@4' |
CV58 |
MtoP |
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dB@4' |
CV58 |
MtoP |
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dB@4' |
CV58 |
MtoP |
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x 0.71 |
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79 |
15 |
3.85 |
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74 |
15 |
4.00 |
|
79 |
15 |
4.00 |
|
2.84 |
Vrms |
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|
78 |
12 |
3.80 |
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73 |
12 |
3.95 |
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Amplifier is O.K. |
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11 Ohm |
Load |
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76 |
9 |
3.70 |
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72 |
9 |
3.85 |
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+0 dB |
0.73 |
x 1.0 = |
|
0.73 |
Watts |
The Generic Steam Diesel Scheme_38a download by a PR3, and the Bell is replaced with a Tone880Hz.wav
The dB@4' by Bob Frey with a SOUND LEVEL METER Range: 40 dB to 85 dB 10 Aug. 2012