This is a Coeval Series speaker system for Life-Like Proto 2000 BL2 locomotives. It requires removal of the factory PCB and trimmig the plastic "shelf" a bit shorter. The system drops into the frame slots and secures with a dab of adhesive.
The speaker comes fully assembled and tested. Please choose 4Ω (Loksound) or 16Ω (Soundtraxx/TCS) wiring.
Overall dimensions are 28.5mmH x 23mmW x 22mmL