KB1004: SDH164D with One 28 mm 32 ohm speaker in an Enclosure

This article was last updated on Nov. 12, 2013, 1:50 p.m. | Print Article | Leave Feedback

Sound Decoder:  SDH164D SoundFX

Wired Mobile Decoder for HO Locomotives

1x32encl.jpg

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.

 

 

         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

 

 

69

15

 4.55

 

67

15

 4.60

 

70

15

4.75

 

3.35

Vrms

 

67

12

 4.35

 

65

12

 4.55

 

 The 0.5 W Speaker is O.K.

 

32 Ohm

Load

 

65

9

 4.15

 

63

9

 4.45

 

+1 dB

0.35

x1.15=

 

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

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