This is a Rectify Series drop-in speaker system for Intermountain SD40-2 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 uses a dab of adhesive to secure it and no modifications are needed to replace the factory speaker.


The speaker comes fully assembled and tested.


Dimensions are: 12mmH x 18mmW x 35mmL



Intermountain SD40-2

SKU: IMRH-S402-087

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