This is a Rectify Series drop-in speaker system for Walthers Mainline SW-1 locomotives. The speaker mounts over the front truck and requires removal of the factory PCB and a hardwire decoder installation.
The speaker features hooks to route the truck and speaker wires away from the drive-shaft/flywheel.
The speaker comes fully assembled and tested.
Dimensions are: 10.5mmH x 21mmW x 29mmL