This is a drop-in speaker for Rapido SD7/9/10 locomotives. Featuring Diapasonic Tuning™, the speaker yields a deeper, smoother and more detailed sound over stock. The speaker is an exact retrofit and requires no modifications. See the second set of photos for installation procedures. Care must be taken with the wiring to ensure a proper seat.
 
The speaker comes fully assembled and tested.
 
Dimension: 10mmH x 21mmW x 41mm