Sound Decoder: SDH164D SoundFX
Wired Mobile Decoder for HO Locomotives
Master Volume CV58= 9 to 15, Diesel CV60=1, Bell CV141=64, Horn Cv142=64 Max.
Speaker: One 28mm dia. 32 Ohm 0.5W
Speaker is enclosed, and is hanging by the wires.
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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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69 |
15 |
4.55 |
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67 |
15 |
4.60 |
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70 |
15 |
4.75 |
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3.35 |
Vrms |
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67 |
12 |
4.35 |
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65 |
12 |
4.55 |
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The 0.5 W Speaker is O.K. |
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32 Ohm |
Load |
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65 |
9 |
4.15 |
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63 |
9 |
4.45 |
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+1 dB |
0.35 |
x1.15= |
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0.40 |
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 7 Aug. 2012