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This is a drop-in Rectify speaker system for current-run BLI SD40 locomotives - both with factory sound or the DCC-Ready Stealth version. The speaker snaps into place under the rear PCB above the drive-shaft where the stock speaker fits. No modifications are required to replace the stock speaker (or install this one into the Stealth).


Optionally, the top weight screwed to the chassis behind the cab can be removed and a UFIT-5940-RC1 speaker can be placed here (at least on the Stealth versions). Use one or the other or both speakers!


Dimensions are 9mmH x 18mmW x 25mm

Broadway Limited SD40 (2023+)

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