This is a Coeval Series drop-in speaker system for Athearn Genesis ES44AC/DC locomotives. The speaker has two pins that locate the system in the frame, just like the stock speaker. A single screw-removal is all that is needed to remove the stock speaker/frame. This system then simply drops-in with a touch of Goo keeping it in place.
The speaker comes fully assembled and tested. Please choose 4Ω (Loksound) or 16Ω (Soundtraxx) wiring.
Overall dimensions are 31mmH x 18mmW x 28mmL