[. . . ] 100 V line transformer TR100, for DLS In-wall speakers 100 V Line Speaker Systems If you want to install In-ceiling speaker or In-wall speakers in hotels, schools, churches or restaurants it is often much easier to use Line Speaker Systems. [. . . ] All the loudspeakers step-down transformer primaries are connected in parallel to the constant voltage line. + Parallel connection of 100 V Line Speakers Technical data TR100 Art. no Input Output Insertion loss T. H. D Frequency response 9-26890 20 W - 10W - 5 W / 100Volt 4 ohms 1dB max @ 1 kHz 1% max @ 70 Hz 1 kHz +- 1 dB 50 Hz - 1 dB 10 kHz - 1, 5 dB 20 kHz - 3 dB 42/61 x 53 x 43 mm Size W x H x D Amplifier DLS Svenska AB P. O. Box 13029, SE-40251 Göteborg, Sweden Tel: +46 31 840060, Fax: +46 31 844021 E-mail: info@dls. se - www. dls. se The TR100 is attached to the speaker frame with two screws as on the photo. Line voltage connect to the transformer primare wires between black, and one of the others (yellow, orange or brown). 100 V line transformer TR100, for DLS In-wall speakers 100 V Line Speaker Systems If you want to install In-ceiling speaker or In-wall speakers in hotels, schools, churches or restaurants it is often much easier to use Line Speaker Systems. It is a "constant-voltage-system" where the amplifier is equipped with a step-up transformer which increases the normal voltage output up to 100 Volts. The main difference between a low impedance speaker system in 4 or 8 ohm is the way the individual loudspeakers are connected to the amplifier. In a convetional low-impedance system you must connect the speakers in series and parallell in a way to maintain the correct impedance for the amplifier. In a 100 Volt line system, a large number of single loudspeakers, each equipped with a step-down transformer, can be connected to one single speaker cable. [. . . ] Line voltage connect to the transformer primare wires between black, and one of the others (yellow, orange or brown). [. . . ]