This is a Coeval Series drop-in speaker system for MTH PA-1 locomotives. The system spans the drive-shafts. A touch of adhesive secures the system in place. Use them singly or as a pair for a bigger sound.
The speaker comes fully assembled and tested. Please choose 4Ω (Loksound) or 16Ω (Soundtraxx) wiring.
Dimensions are: 28mmH x 25mmW x 27mmL