Train Control Systems 1713 UNIV-SH6-C Speaker Housing with Speaker

From the Manufactor

SKU: 1713 Universal speaker housing for the TCS 13.6mm x 9.6mm speaker (included). This simple, closed design channels both the front and rear audio out the front of the speaker housing. These micro speakers do not work without being mounted to an enclosure (like this one) or to a piece of the locomotive shell.