KB995: SDH164D with 2 28mm 32 ohm speakers

This article was last updated on Sept. 7, 2012, 4:07 p.m. | Print Article | Leave Feedback

SDH164D SoundFX Wired Mobile Decoder for HO Locomotives

2x32.jpg

Speaker:   Two 28mm dia. 32 Ohm, 0.5 W These speakers are connected in parallel.

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

 

         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

 

 

68

15

 4.15

 

66

15

 4.25

 

70

15

4.25

 

3.00

Vrms

 

67

12

 4.10

 

65

12

 4.20

 

Each 0.5 W Speaker is O.K.

 

16 Ohm

Load

 

66

9

 3.95

 

64

9

 4.15

 

 +2 dB

 0.55

x 1.3 =

 

0.70

 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                  9 Aug. 2012

 

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