Developed in cooperation with a few Australian modelers, this is a Rectify Series drop-in speaker system for Auscision 48, 830, X Class and possibly other locomotives.
 
The speaker comes fully assembled and tested.
 
I've only worked with the single Auscision 48 Class shown for this system. I did trim the two tiny posts used to hold the stock speaker. Please note the dimensions and shape of the system in accordance with your particular locomotive.
 
Dimensions are: 10.5mmH x 16mmW x 35mmL
 
VIDEO: https://youtu.be/3726Bj1qTaI