D19 MicVALVE
E1/6 Come in!
Date printed: 9.2.2000
1.4
Technical Specifications
(Subject to Change without Notice)
A/D converter:
Delta-Sigma, 64 × oversampling, resolution 20 bit, linear (modular).
Analog inputs:
2 separate Mic and Line inputs on XLRs, transformer-balanced and float-
ing.
2 stepped attenuators and 2 potentiometers for MIC/LINE Gain setting.
Functions selectable per channel: Phase, Phantom (Mic input only), High-
pass filter (–3 dB @ 75 Hz, 12 dB/oct.; Mic input only).
2 switchable Insert Return inputs (XLR), electronically balanced; input level
fixed.
Analog outputs:
2 Line outputs (XLR), electronically balanced. Output level adjustable.
2 separate Insert Send outputs (XLR), electronically balanced; output level
fixed.
Metering:
PPM, peak program meter with switchable Peak Hold function;
16-segment bargraph displays, range –60 dBFS...Overload.
Digital audio processing:
DC reject (always on)
Output word length 20 bit, 16 bit with Dithering or 16 bit with Noise
Shaping.
1.4.1
Audio Specifications
Conditions:
all measurements
without valve stage
, at f
s
= 48 kHz
Insert OFF, unless otherwise noted
20 Hz...20 kHz, unless otherwise noted.
Analog – Digital:
Line inputs:
Conditions:
Gain = 24 dBu
FS
, without Super ADC option
Frequency response:
±0.1 dB
Signal/noise ratio:
> 106 dBFS,
CCIR 468-3
THD + Noise:
< –80 dB
FS
,
@ –1 dB
FS
< –104 dB
FS
,
@ –30 dB
FS
< –103 dB
FS
,
@ –30 dB
FS
, looped via Insert
CMRR:
> 50 dB
Crosstalk:
< –100 dB
@ 15 kHz, Fine Gain min.
Sensitivity:
–1...+24 dBu
for Full Scale
Microphone inputs:
Conditions:
Gain = 20 dBu
FS
Frequency response:
±0.4 dB
Noise figure:
< 3.5 typ.
@ max. gain, 20 Hz...20 kHz, 24°C
CMRR:
> 60 dB
Crosstalk:
< –100 dB
@ 15 kHz, Fine Gain min., Gain = 20 dBu
FS
Sensitivity:
–55...+20 dBu
for Full Scale
