Selenium HL1425 Exponential HornSpecifications: Horn type: Exponential Minimum frequency: 600 HzNominal 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 #HL14-25Specifications: Horn type: Exponential Minimum frequency: 600 HzNominal dispersion: 45° H x 45° V Throat diameter: 1. 0" Mounting type: 1-3/8"-18 TPI .Specifications: Horn type: Exponential Minimum frequency: 600 HzNominal dispersion: 45° H x 45° V Throat diameter: 1.0" Mounting type: 1-3/8"-18 TPI .