Broadway Limited Imports N 1698 Complete Rolling Thunder Kit with Receiver and Subwoofer

The system consists of the Paragon3 sound system in the locomotive, with its integral ROLLING THUNDER transmitter, a ROLLING THUNDER receiver box under the layout, and a powered subwoofer.

ROLLING THUNDER receiver works with any ROLLING THUNDER equipped Paragon3 locomotive
ROLLING THUNDER works with DC or DCC layouts. Just plug it in.
25 times more powerful than typical model train sound systems for sounds you can feel
2 available transmission frequencies - to prevent wireless interference
29 available channels per frequency - for additional wireless interference prevention
Actual sounds of each locomotive play through subwoofer
Subwoofer sounds are perfectly synchronized to the locomotive movement, sound effects and smoke, if applicable
5.25" polycarbonate cone
Subwoofer volume goes to 11

For use only with Paragon3 equipped locomotives

Paragon3 locomotives will operate with normal sounds even without the ROLLING THUNDER subwoofer/receiver kit. However, sound frequency response will be limited to those made from the onboard speakers.