This is a Coeval Series drop-in speaker system for Walthers Mainline ES44 and SD70 locomotives. The speaker uses a touch of adhesive to mount and no modifications are needed to replace the factory speaker.
The speaker comes fully assembled and tested. Please choose 4Ω (Loksound) or 16Ω (Soundtraxx) wiring.
Dimensions are: 12mmH x 17mmW x 37mmL