SELENIUM HL1425 Exponential Horn Specifications: Horn type: Exponential Minimum frequency: 600 Hz Nominal dispersion: 45 H x 45 V Throat diameter: 1.0" Mounting type: 1-3/8"-18 TPI . Dimensions: 6.1" W x 6.1" H x 10.2" D Cabinet cutout: 5-1/4" diameter Selenium #HL14-25 Specifications: Horn type: Exponential Minimum frequency: 600 Hz Nominal dispersion: 45 H x 45 V Throat diameter: 1.0" Mounting type: 1-3/8"-18 TPI . Dimensions: 6.1" W x 6.1" H x 10.2" D Cabinet cutout: 5-1/4" diameter Selenium #HL14-25