This custom designed speaker and transformer combination has been specifically engineered to ensure a wide frequency range and dispersion angle, plus a high sound pressure level (SPL) ensuring excellent music and speech intelligibility; which is highly desirable for emergency paging applications.This driver exhibits optimum frequency response and efficiency for BGM & paging. The transformer is wound on a professional grade grain oriented steel core for high efficiency and extended frequency response.Standard Type:This model is fitted with a 2 way terminal block