KB1009: SDH164D with one Small-Oval 8 Ohm speaker and 3 resistors

This article was last updated on Nov. 13, 2013, 9:39 a.m. | Print Article | Leave Feedback

Sound Decoder:  SDH164D SoundFx

Wired Mobile Decoder for HO Locomotives

1x8smoval3res.jpg

Master Volume: CV58=9 to 15, Diesel CV60=1, Bell CV141=64 Max., Horn CV142=64 Max.

Speaker: Small-Oval 8 Ohm, 1 Watt with a 3.3 Ohm resistor in series.
35mm x 16.2mm or 36.9mm x 18.3mm w/enclosure
8.1mm High or 9.1mm w/enclosure

Tonystrains see dreamspeakers

 

 

         Diesel Horn

 

 

    880Tone Sine Wav.

 

  Horn & 880 Hz together

 

Factor

 

 

dB@4'

CV58

MtoP

 

dB@4'

CV58

MtoP

 

dB@4'

CV58

MtoP

 

x 0.71

 

 

67

15

 4.00

 

65

15

 4.15

 

67

15

4.15

 

2.95

Vrms

 

65

12

 3.95

 

64

12

 4.10

 

 Amplifier & Speaker are O.K

 

11 Ohm

Load

 

64

9

 3.75

 

63

9

 4.05

 

 +0 dB

 0.79

x 1.0 =

 

0.79

 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

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