<p>HD60T is provided with internal line transformer, allowing long distance application. This driver&nbsp;has been designed to be used in conjunction with PROEL horns or to substitute other drivers with W-18N 3/8"&nbsp;plugs. HD drivers provide highly intelligible sound reproduction. The use of very high quality materials (aluminium waterproof enclosure) allows this driver&nbsp;to be used in the worst environmental and atmospheric conditions</p>