Visaton dl 18 2 t 8ohm 6 5 inch ceiling speaker visaton dl 18 2 t 8 ohm p the visaton dl 18 2 t is a 17cm 6 5 inch hi fi ceiling speaker with a corrosion free grille the speaker is suitable for the installation in suspended ceilings of any material p p the speaker is easy to install thanks to the snap in mounting ring just place the speaker in to the round ceiling cut out and the mounting ring can be positioned a push terminal block allows a quick and easy connection for