These are Rectify Series drop-in speaker systems for Rapido Dash 8-40CM "Draper Taper" locomotives.
 
Two versions are now available:
 
The early releases with the dual iPhone 4 speakers uses the RAPO-40CM-RC1 speaker. The speaker is a beautiful press-fit over the rear drive-shaft and no modifications are needed to replace the factory speakers.
 
The current-run of 8-40CMs uses the BOWS-F701 to replace the rear speaker with an optional IMHR-GP10 speaker mounted in the front position. See the third photo for installation instructions. No modifications are needed to replace the factory speakers.
 
The speakers come fully assembled and tested.
 
RAPO-40CM-RC1 dimensions: 29mmH x 16mmW x 25mmL
 
VIDEO: https://youtu.be/2XwgoNtTiRY
 
VIDEO (2024): https://youtu.be/sCEiu0-IiIc