User manual ELECTRO-VOICE 15000 DATASHEET

[. . . ] 15000 Series Transformers COMMERCIAL General Product Description Electro-Voice® 70. 7V/100V Output Transformers are designed for efficient transmission of amplifier power to distributed sound systems or multiple loudspeakers. The transformers accommodate a wide range of user requirements for impedance matching, output voltage and power. [. . . ] Transformer response at low frequencies is limited by core saturation. A clear indication of core saturation is a sudden drop in primary impedance. The graph on page 2 shows the typical Electro-Voice® 15000 Series Output Transformer has flat primary impedance to 35 Hz. Restricting the 15000 Series Output Transformer to above 60 Hz will effectively double the transformer's power handling. Insertion Loss is the difference between power applied to the primary and power available on the secondary. The graph also shows the typical Insertion Loss of the 15000 Series Output Transformer is 0. 5 dB. Distortion and Phase Response are shown in the second graph on page 2. Distortion is excellent and remains well below 0. 1%. Phase response is less than 9 degrees at 15 kHz. Architects' and Engineers' Specifications The transformer shall deliver within ±1. 0 dB of its full rated power over the frequency range of 35 Hz to 15, 000 Hz with a maximum insertion loss not greater than 1. 0 dB for the most unfavorable impedance combination. The transformer shall deliver rated power at 35 Hz with no more than a 10% increase of power on the primary. [. . . ] For customer orders, contact the Customer Service department at 800/392-3497 Fax: 800/955-6831 For warranty repair or service information, contact the Service Repair department at 800/685-2606 For technical assistance, contact Technical Support at 866/78 AUDIO Please refer to the Engineering Data Sheet for warranty information. Specifications subject to change without notice. Part Number 38109-885 Rev A [. . . ]