The D20 is a 4-channel (2RU) amplifier suitable for both mobile and stationary environments requiring low to medium sound pressure levels (SPL). The D20 uses the same Digital Signal Processing (DSP) platform and is designed to work with all d&b loudspeakers (except the J-Series and the M2 stage monitor) and offers a linear mode. Each channel has a fully adjustable delay function of up to 10 s (= 3440 m/11286 ft) and two 16-band EQs with optional parametric, unbalanced, shelving or notch filtering.
Maximum output power per channel (THD + N < 0.5%, all channels amplified) CF = 6 dB @ 4/8 ohms 4 x 1000/800 W CF = 12 dB @ 4/8 ohms 4 x 1600/800 W Maximum output voltage 117 V Frequency response (-1 dB) 35 Hz - 25 kHz THD+N (20 Hz - 20 kHz, 200 W @ 4 ohms) < 0. 5% S/N ratio (unweighted, RMS) Analogue input > 104 dBr Digital input > 106 dBr Damping factor (20 Hz - 200 Hz > 4 ohms) > 80 Crosstalk (20 Hz - 20 kHz) > -45 dBr Gain (linear mode @ 0 dB) 31 dB
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