Speaker Combinations and Sound Level Tests

KB994 Decible measurements on SDH164D

Decibel measurements on SDH164D Digitrax Sound Sound level is a logarithmic measure of the effective sound pressure of a sound relative to a reference value. It is measured in decibels (dB) above a standard reference level. The commonly used "zero" reference sound pressure in air is 20 µPa RMS, which is usually considered the threshold of human hearing (at 1 kHz). Examples of some Loudness rating in both Pa and dB Hearing damage (over long-term exposure, need not be continuous) 0.356 Pa 85 dB Handheld electric mixer 65 dB TV (set at home level) at ...

KB995 SDH164D with 2 28mm 32 ohm speakers

SDH164D SoundFX Wired Mobile Decoder for HO Locomotives 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 ...

KB998 SDH164 with two SP26158B Rectangular Speakers

Sound Decoder: SDH164D SoundFX Wired Mobile Decoder for HO Locomotives Master Volume: CV58=9 to 15, Diesel CV60=1, Bell CV141=64 Max., Horn CV142=64 Max. Speaker: Two SP26158B Rectangular 26.5mm x 15.5mm x 9mm, 8 Ohms 0.5W Compact Box, Speaker with enclosure & wires. Speakers are wired in series. 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 4.20 66 15 4.30 67 15 4.30 3.05 Vrms ...

KB999 SDH164 with one SP26158B Rectangular Speaker and One SP53188B

Sound Decoder: SDH164D SoundFX Wired Mobile Decoder for HO Locomotives Master Volume: CV58= 9 to 15, Diesel CV60=1, Bell CV141=64 Max., Horn CV142=64Max. Speaker: One SP26158B Rectangualr 26.5mm x 15.5mm x 9mm, 8 Ohms 0.5W One SP53188B 53mm X 18mm X14mm, 8 Ohms 0.5W Speakers are wired in series. 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 4.15 65 15 4.30 69 15 4.30 3.05 ...

KB1003 SDH164D with Two SP53188B Speakers

Sound Decoder: SDH164D SoundFX Wired Mobile Decoder for HO Locomotives Speaker:Two SP53188B 53mm x 18mm x 14mm 8 Ohms 0.5W Rectangular Box These two 8 ohms are wired in series. 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 71 15 4.15 67 15 4.30 71 15 4.30 ...

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

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. 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 ...

KB1005 SDH164D with One 28 mm 32 ohm speaker

Sound Decoder SDH164D SoundFX Wired Mobile Decoder for HO Locomotives Master Volume CV58= 9 to 15, Diesel CV60 = 1, Bell CV141= 64 Max., Horn CV142= 64 Max. Speaker: One 28mm dia. 32 Ohm, 0.5 W Not 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 66 15 4.55 64 15 4.60 67 15 4.75 3.35 Vrms 64 ...

KB1006 SDH164D with one 4 inch 8 Ohm speaker with 3.3 Ohm resistor

Sound Decoder: SDH164D SoundFX Wired Mobile Decoder fopr HO Locomotives Master Volume: CV58=9 to 15, Diesel CV60=1, Bell CV141=64Max., Horn CV142=64 Max. Speaker: 4 inch Dia. 8 Ohm Speaker, 4 Watts with a 3.3 Ohm resistor in series. 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 79 15 3.85 74 15 4.00 79 15 4.00 2.84 Vrms 78 12 3.80 73 12 3.95 Amplifier ...

KB1008 SDH164D with One SP26158B Rectangular Speaker and a 5 ohm resistor

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. 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 4.00 65 15 4.10 68 15 4.10 ...

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

Sound Decoder: SDH164D SoundFx Wired Mobile Decoder for HO Locomotives 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 ...

KB340 SDH164D with One SP26158B Rectangular Speaker and a 5 ohm resistor compact box enclosure.

Sound Decoder: SDH164D SoundFX Wired Mobile Decoder for HO Locomotives Master 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, 8Ohms 0.5W Compact Box Speaker with enclsure & wires A 5 Ohm 1/2W resistor in series with the speaker. 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 ...