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These are Rectify Series drop-in speaker systems for Intermountain GEVo ES/ET 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 speakers use carpet-tape or a touch of adhesive to mount and no modifications are needed to replace the factory speaker.


Two rear-mount options are availe:

IMRH-E441-RC1 (early-run replacing the round 28mm speaker)

IMRH-E442-RC1 (current-run replacing the twin-cube speaker)


Likewise, you can add two different front-mounted speakers for better horn/bell localization:

IMRH-E44F-RC1 (early-run)

UFIT-9115-RC1 (current-run)


The speakers come fully assembled and tested.


Dimensions are:

Early-run: 19.5mmH x 18mmW x 43mmL

Current-run: 12mmH x 18mmW x 56mmL

Early-run front-mount: 14mmH x 18mmW x 22mmL





Intermountain ES/ET GEVo

SKU: IMRH-ES44-087
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