
Engineer 418 & 818 User Manual Page 79
Audio
INPUTS - electronically balanced
IMPEDANCE - > 25k ohms
CMRR - > 70dB 20Hz-20kHz
OUTPUTS - electronically balanced
SOURCE IMP. - < 60 ohms
MIN. LOAD - 600 ohm
MAX. LEVEL - +20dBU
FREQUENCY RESP. - +- 0.1dB 8Hz – 20 kHz
A/D DYNAMIC RANGE - > 115dB Unweighted
D/A DYNAMIC RANGE - > 112dB Unweighted
IN-OUT DYNAMIC RANGE - > 110dB Unweighted
DISTORTION - 0.0035% @1kHz 0dBU
MAXIMUM DELAY - 10ms. /output (increment 2 microseconds.)
Processing
AD/DA resolution - 24 bits
AD/DA sample rate - 48 kHz
Internal processing resolution - 32 bits floating point
Software
OUTPUT GAIN - adjustable +12dB to –inf.dB in 0.25dB steps
INPUT GAIN - adjustable +12dB to –inf.dB in 0.25dB steps
Parametric Equalisation
FILTERS - 8 sections per input, 8 sections per output
FILTER TYPES - Bell, Lowshelf, Highshelf, Notch, Bandpass
FILTERGAIN - +12dB to –45dB in 0.25dB steps
FILTER Q/BW - User selectable 0.05 to 20 / 20 to 0.05
FREQUENCY - 20Hz – 20kHz
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