The PH-2420 is a 1 inch bolt on style high frequency horn. The design features a 90 degree horizontal by 40 degree vertical radiation pattern. The PH-2420 is ideal for use in two way sound reinforcement systems where the low frequency component is a 10 inch, 12 inch or 15 inch loudspeaker. The horn may be used as part of a medium format sound reinforcement system in applications such as retail locations, foreground and background music reproduction systems and in restaurants. The PH-2420 is an injection molded design that utilizes very high impact ABS with glass filling for additional structural support. The screw on 1 inch throat is compatible with a wide variety of P Audio compressions drivers such as the PreNeo and BMD series professional compression drivers. The acoustic loading allows the PH-2420 to be used down to 1200Hz The PH-2420 may be used with the following P.audio professional compression drivers. (or any industry standard compatible driver ) - BM-D440 - BM-D450 - PreNeo-450N - PA-DE34