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Onyx 1640i
PREMIUM MIXER
WITH FIREWIRE
Onyx 1640i SPECIFICATIONS
Noise Characteristics
Equivalent Input Noise (EIN), mic input at insert, 150 source
impedance, 20 Hz to 20 kHz
60 dB (max) gain: –129 dBu
40 dB gain: –128 dBu
Output Noise Figure (1/4” Main out, all channels assigned to main,
Gain knobs at unity, 20 Hz to 20 kHz)
Main Mix knob down, channel Level knobs down:
–100 dBu (–104 dB SNR, ref +4 dBu)
Main Mix knob unity, channel Level knobs down:
–93 dBu (–97 dB SNR, ref +4 dBu)
Main Mix knob unity, channel Level knobs unity:
–91 dBu (–95 dB SNR, ref +4 dBu)
FireWire Through (Record + 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
All sample rates –105 dB
Frequency Response
Mic input to main output (all gain stages at unity)
+0, –1 dB, <10 Hz to 80 kHz
+0, –3 dB, <10 Hz to >100 kHz
Channel line input to any output (all gain stages at unity)
+0/–1 dB, 20 Hz to 20 kHz
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 20 kHz
–3 dB at 21 kHz
96 kHz sample rate +/–0.5 dB,
20 Hz to 20 kHz
–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) 0.005%
Mic input at insert
(–10 dBu in, +20 dB gain, 20 Hz to 20 kHz bandwidth) 0.0007%
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 0.02%, 10 Hz to 20 kHz
96 kHz sample rate 0.02%, 10 Hz to 10 kHz
0.05%, 10 kHz to 47 kHz
Attenuation and Crosstalk
@1 kHz
Main Mix knob down –80 dBu
Channel Alt/Mute switch engaged –96 dBu
Channel Level knob down –96 dBu
Common Mode Rejection Ratio (CMRR)
Mic input to insert, max gain, 1 kHz <70 dB
Maximum Input Levels
Mic input, gain at unity (0 dB) +21 dBu
Mic input, gain at max (60 dB) –38 dBu
Line input, gain at –20 dB +30 dBu
Instrument input, gain at –20 dB +21 dBu
Tape input +21 dBu
Aux return +21 dBu
Maximum Output Levels
All outputs +21 dBu
Equalization
Low ±15 dB @ 80 Hz
Lo-Mid frequency 100 Hz to 2 kHz
Lo-Mid gain ±15 dB
Hi-Mid frequency 400 Hz to 8 kHz
Hi-Mid gain ±15 dB
High ±15 dB @ 12 kHz
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
Meters
4-segment pre-fader channel meters OL (+18 dBu),
+10, 0, –20 dBu
12-segment pre-fader OL (+20 dBu), +15, +10,
Control Room meters +6, +3, 0, –2, –4, –7, –10,
–20, –30 (0 dB = 0 dBu)