Talking Electronics

DIESEL SOUND GENERATOR with 4 watt amplifier For Model Railways.

Imagine having a long goods train hauled around your layout by a beautifully detailed diesel locomotive that sounded like the real thing. No longer do you have to tolerate the tinny whine of the electric motor that is the real source of the locomotive's power, because here is a project that generates a convincing diesel engine sound.
It is not meant to be installed in a train, but rather back at the controller.

COMPATIBILITY WITH THROTTLES
The diesel sound generator responds differently to various types of throttles. It works well on the pulse type throttles. It is also completely compatible with variable voltage throttles.
However, old current controlling throttles, that is, any that use a rheostat to control speed, tend to make the diesel sound generator over-rev. Some juggling with the input voltage divider would cure the problem, but I have found the simplest and most effective method to be reducing the battery voltage to six volts. The unit will be a little quieter at idle, but will otherwise behave normally.

   
Includes on board volume control.

Contents of this package:
1 x DIESEL SOUND GENERATOR. LxWxH 12 X 5 X 2cm
1 x 8R 4 Watt Speaker with 30cm lead.