The Ford Barn

Richard Lorenz · 06-29-2015, 10:12 AM

Years ago I bought 2 pair of 6 volt trumpet horns as a novelty. I call them trumpet horns because the horn parts are straight and range from 13 to 21 inches in length. I thought that they should have a musical sound to them, but mine just make a loud harsh sound. Is there some way to tune the diaphragms? There are no rotating parts.

One pair is made by the Sparks-Withington Co. of Jackson Michigan. One of this pair has a low resistance wire wound resistor that I suppose would change the frequency of the tone. Any ideas?

Richard Lorenz · 07-01-2015, 03:10 PM

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I finally got a semi-musical sound out of one of the horns by turning down the vibrator adjusting screw.

I have not been able to get any sound out of the Jackson, Mich. horns. The wiring circuit is beyond me. When I open the points, the resistance (input to ground) stays at about 4 ohms. Crazy! I tried the horns on 12 volts and got no sound.

06-29-2015, 10:12 AM	#1
Richard Lorenz Senior Member Join Date: May 2010 Posts: 447	Trumpet Horns Years ago I bought 2 pair of 6 volt trumpet horns as a novelty. I call them trumpet horns because the horn parts are straight and range from 13 to 21 inches in length. I thought that they should have a musical sound to them, but mine just make a loud harsh sound. Is there some way to tune the diaphragms? There are no rotating parts. One pair is made by the Sparks-Withington Co. of Jackson Michigan. One of this pair has a low resistance wire wound resistor that I suppose would change the frequency of the tone. Any ideas?

07-01-2015, 03:10 PM	#2
Richard Lorenz Senior Member Join Date: May 2010 Posts: 447	Re: Trumpet Horns Sponsored Links (Register now to hide all advertisements) I finally got a semi-musical sound out of one of the horns by turning down the vibrator adjusting screw. I have not been able to get any sound out of the Jackson, Mich. horns. The wiring circuit is beyond me. When I open the points, the resistance (input to ground) stays at about 4 ohms. Crazy! I tried the horns on 12 volts and got no sound.