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Descripción
one and line signals (from a mixing console output). Also available as stereo version (PPB20S)
A high quality input amplifier with a transformer balanced input provides a wide dynamic range. A total of 20 transformer-balanced XLR/m outputs with separate paired driver circuits make it possible to connect up video cameras and other recording equipment.
The nominal output level is +4 dBu at 600 ?. Channels 19 and 20 have TRS jack sockets for balanced/unbalanced signals and also phono sockets (-10 dBu nominal level).
Where more than 20 outputs are required, additional PPB 20s can be hooked up via a rear BUS IN/OUT socket. Signal monitoring is provided by a 10 LED strip displaying a range of -40 to +10 dB (0 dB in the display = 4 dBu output) and an adjustable headphones amplifier.
The PPB20 has an integral, shielded power supply unit. An extra DC input makes it possible to connect up a (backup) battery power source. A PW4 can provide the necessary backup power supply for two PPB20s.
Input: • Transformer-balanced, 4 XLR/f sockets, with paired front/rear parallel connections for separate microphone/line signals. • Nominal Input Impedances: Microphones 200 ?, Line = 5 k? • Max. input levels: microphones = 0 dBu, Line = +20 dBu • Max. amplification: microphones = +66 dB, Line = +22 dB (constantly adjustable via switch and potentiometer).
Output: • 20 XLR/m, 2x TRS jack, 2x phono, all transformer-balanced and floating with separate ground lift switches at rear • Nominal output impedances: XLR = 300 ?, jack and phono = 600 ? • Nominal output levels: XLR = +4 dBu/20 dBu max.; jack/phono = -10 dBu, + 6 dBu max • Headphones output: Stereo jack socket, with mono tip + ring, Designed for use with 8 ? - 200 ? headphones (constantly adjustable level). • 10 LED strips displaying a range of -40 to +10 dB. • Bus input/output (mono jack) • Power Supply: 230 VAC or ± 12 V to ± 18 VDC, 15 Watts. • Housing: 19'', 3 U, approx. 200 mm deep.