This is a Rectify Series drop-in speaker system for Life-Like Proto 1000 Erie-Built locomotives. More than just a box, the enclosure features Diapasonic Tuning™, which allows the lower frequencies to accurately develop and resonate, clears the midrange of excess resonance and tunes the upper-mid/high response. The speaker is a beautiful press-fit into the frame and no modifications are needed for installation.
 
The speaker comes fully assembled and tested.
 
Dimensions are: 13mmH x 18mmW x 34mmL