Sound Decoder: SDH164D SoundFX
Wired Mobile Decoder for HO Locomotives
Maste Volume: CV58=9 to 15, Diesel CV60=1, Bell CV141=64 Max., Horn CV142=64 Max.
Speaker: one SP26158B Rectangular 26.5mm X 15.5mm x 9mm, 8 Ohms 0.5W Compact Box, Speaker with enclosure & wires.
A 5 Ohm 1/2W resistor in series with the speaker.
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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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68 |
15 |
4.00 |
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65 |
15 |
4.10 |
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68 |
15 |
4.10 |
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2.90 |
Vrms |
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67 |
12 |
3.95 |
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63 |
12 |
4.05 |
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0.5 W Speaker O.K. with 5 ohm Res. |
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13 Ohm |
Load |
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66 |
9 |
3.85 |
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61 |
9 |
4.00 |
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+0 dB |
0.65 |
x 1.0 = |
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0.65 |
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 11 Aug. 2012