This is a Rectify Series drop-in speaker system for early-run Atlas Master Dash 8-32/40B locomotives. The speaker is a beautiful press-fit between the front weight and motor mount. No frame/weight/shell modifications are needed! The factory PCB will need to be removed with either a Decoder Buddy 21-pin or hardwire decoder installation.
 
The speaker comes fully assembled and tested.
 
Dimension: 14mmH x 18mmW x 26mmL
 
VIDEO: https://youtu.be/74x5id51vo0