Rough Diesel Idle Sound Circuit

Truck Engine Sound Effect Circuit Add this rough diesel idle engine sound effect to your model semi trucks, tow trucks, excavators, tractors, and more heavy diesel vehicles! This idle sound circuit has a compact design allows you to discreetly place it into your model vehicle, or amidst your landscapes or diorama to create a great soundscape to enhance the overall realism and experience of your model, layout, or diorama. Make your truck come alive! with our rough diesel idling sound circuit! Speaker Sizes (click to enlarge) "What do I need to run this diesel sound circuit?" 5-12 volt battery / regulated adapter Your own battery, or for 9 volt get our 9 volt battery snap/switch or plug in 12 volt get our 12 volt regulated adapter Your own AC/DC or DCC supply: 7-19V 7-19 volt Universal AC/DC/DCC circuit is already set up "plug and play" for your own power supply