30
Onyx 1220i
Appendix C: Technical Information
Specifications
Noise Characteristics:
Equivalent Input Noise (EIN), mic input at insert, 150
Ω
source
impedance, 20 to 20 kHz:
60 dB (max) gain:
-127 dBu
40 dB gain:
-126.5 dBu
Equivalent Input Noise (EIN), mic input at insert, 50
Ω
source
impedance, A-weighted:
60 dB (max) gain:
-130.5 dBu
40 dB gain:
-130 dBu
Output Noise Figure (1/4" Main out, all channels assigned to
main, Gain knobs at unity, 20 Hz to 30 kHz):
Main Mix knob down, channel Level knobs down:
-102 dBu (-106 dB SNR,
ref +4 dBu)
Main Mix knob unity, channel Level knobs down:
-96 dBu (-100 dB SNR,
ref +4 dBu)
Main Mix knob unity, channel Level knobs unity:
-93 dBu (-97 dB SNR,
ref +4 dBu)
FireWire Through ( Playback) Dynamic Range:
0 dBu mic input, to DAW, routed back to mixer direct to Control
Room, all gain stages unity, 20 Hz to 20 kHz:
44.1 kHz sample rate:
-101.5 dB
96 kHz sample rate:
-104.5 dB
Frequency Response:
Mic input to any output (all gain stages at unity):
+0/-0.5 dB, 20 Hz to 20k
Stereo channel line input to any output (all gain stages unity):
+0/-0.5 dB, 20 Hz to 20k
FireWire in and out (mic input to FireWire send, returned to
Control Room, all gain stages at unity):
44.1 kHz sample rate:
+/-0.5 dB, 20 Hz to 20k
-3 dB at 21 kHz
96 kHz sample rate:
+/-0.5 dB, 20 Hz to 20k
-3 dB at 45 kHz
Distortion (THD+N):
20 Hz to 20 kHz, 20 Hz to 80 kHz bandwidth
Mic input at insert
(+4 dBu in, 0 dB gain, +4 dBu out): 0.0015%
Mic input at insert
(-36 dBu in, +40 dB gain, +4 dBu out): 0.017%
Stereo channel line input to any output
(+4 dBu in, all gain stages at unity +4 dBu out): 0.005%
FireWire in and out (+4 dBu in, mic input to FireWire send,
returned to Control Room, all gain stages at unity):
44.1 kHz sample rate:
0.01%, 20 Hz to 2 kHz
0.02%, 2 kHz to 20 kHz
96 kHz sample rate:
0.01%, 10 Hz to 1 kHz
0.03%, 1 kHz to 47 kHz
Attenuation and Crosstalk:
@ 1 kHz relative to 0 dBu
Main Mix knob down:
-85 dBu
Channel Alt/Mute switch engaged:
-95 dBu
Channel Level knob down:
-95 dBu
Common Mode Rejection Ratio (CMRR):
Mic input to insert, max gain, 1 kHz, 150 ohm termination:
-70 dB
Maximum Input Levels:
Mic input, gain at min (0 dB):
+22 dBu
Mic input, gain at max (60 dB):
–38 dBu
Line input, gain at -20 dB:
+22 dBu
Instrument input, gain at -20 dB:
+22 dBu
Tape input:
+12 dBu
Aux return:
+22 dBu
Maximum Output Levels:
All outputs:
+22 dBu
Equalization
Mono Channels
Low:
±15 dB at 80 Hz
Mid frequency:
100 Hz to 8 kHz
Mid gain:
±15 dB
High:
±15 dB at 12 kHz
Stereo Channels:
Low:
±15 dB at 80 Hz
Mid:
±15 dB at 2.5 kHz
High:
±15 dB at 12 k
FireWire
Sample Rates Available:
44.1 kHz, 48 kHz,
88.2 kHz, 96 kHz
Buffer Size:
32 (44.1 kHz and 48 kHz
only), 64, 128, 256, 512,
1024, 2048 samples
Resolution:
24-bit
