| Frequency Response |
| Mic Input to Main Output (Gain @ Unity) |
| |
+0, –1 dB, <10 Hz to 80 kHz |
| |
+0, –3 dB, <10 Hz to 120 kHz |
| Distortion (THD & IMD) |
| Mic Input to Main Output (@ +4 dBu) |
| THD: |
< 0.007% 20 Hz to 20 kHz
0.003% @ 1kHz typical |
| SMPTE IMD: |
< 0.005% (7 kHz/60 Hz, 4:1) |
| Dynamic Range |
| |
>115 dB, Mic In to Main Out |
| Noise Floor |
| Signal-to-Noise Ratio: |
–87 dBu (ref. +4 dBu, Mic In to Main Out, 32 channels and Main Mix levels at unity) |
| |
–89 dBu, (ref. +4 dBu, Mic In to Main Out, 24 channels and Main Mix levels at unity) |
Equivalent Input Noise (E.I.N.),
20 Hz to 20 kHz Bandwidth,
150Ω source impedance |
–129.5 dBu @ +60 dB gain |
| Mic Output Noise: |
| Direct Output: |
–100 dBu (minimum gain) |
| Residual Output Noise: |
| Main Out: |
–100 dBu (Channel and Main Mix levels off) |
| Main Out: |
32•4: –83 dBu (32 channels and Main Mix levels at unity)
24•4: –85 dBu (24 channels and Main Mix levels at unity) |
| Common Mode Rejection Ratio (CMRR) |
| Mic In: |
>70 dB @ 1 kHz, Gain @ maximum |
| Crosstalk |
| Adjacent Inputs: |
< –95 dB @ 1 kHz |
| Input to Output: |
< –85 dB @ 1 kHz |
| Phantom Power |
| |
+48 VDC |
| Equalization |
| Mono Channel EQ: |
| High: |
±15 dB @ 12 kHz |
| High Mid: |
±15 dB, sweepable from 400 Hz to 8 kHz |
| Low Mid: |
±15 dB, sweepable from 100 Hz to 2 kHz |
| Low: |
±15 dB @ 80 Hz |
| Stereo Channel (Aux Input) EQ: |
| High: |
±15 dB @ 12 kHz |
| High Mid: |
±15 dB @ 2.5 kHz |
| Low Mid: |
±15 dB @ 400 Hz |
| Low: |
±15 dB @ 80 Hz |
| Mixer Rated Output |
| Main Outs: |
+4 dBu |
| Aux Send: |
+4 dBu |
| Group Send: |
+4 dBu |
| Monitor Out: |
+4 dBu |
| Matrix Out: |
+4 dBu |
| Maximum Rated Output: |
+21 dBu @ Main XLR and TRS outputs |
| Maximum Input Levels |
| Mic Input: |
+21 dBu, Gain @ unity, pad out |
| Mic Input: |
+30 dBu, Gain @ unity, pad in |
| Line Input: |
+21 dBu, Gain @ –20 dB |
| Tape Input: |
+30 dBu |
| Stereo Return: |
+21 dBu |
| Maximum Voltage Gain |
| Mic Input to: |
| Main Out: |
90 dB |
| Group Out: |
80 dB |
| Aux Sends: |
86 dB |
| Monitor Out: |
103 dB |
| Matrix Out: |
105 dB |
| Phones Out: |
103 dB |
| Line Input to: |
| Main Out: |
70 dB |
| Group Out: |
60 dB |
| Aux Sends: |
66 dB |
| Monitor Out: |
83 dB |
| Matrix Out: |
85 dB |
| Phones Out: |
83 dB |
| Stereo Return to: |
| Main Out: |
53 dB |
| Group Out: |
43 dB |
| Aux Sends: |
49 dB |
| Monitor Out: |
66 dB |
| Matrix Out: |
68 dB |
| Phones Out: |
66 dB |
| Input Impedance |
| Mic Input: |
3 kΩ, balanced |
| Mono Channel Line Input: |
34 kΩ balanced |
| Stereo Returns: |
20 kΩ balanced |
| Talkback Mic: |
1 kΩ balanced |
| Output Impedance |
| Main Out: |
100 Ω balanced, XLR outputs; 300 Ω TRS outputs |
| Direct Out: |
300 Ω |
| Group Out: |
300 Ω |
| Monitor Out: |
300 Ω |
| Matrix Out: |
300 Ω |
| Aux Sends: |
300 Ω |
| Phones Out: |
25 Ω |
| Channel Level LED (Sensitivity) |
| |
0 LED = 0dBu (normal operating level) |
| VU Meters |
| Main Left and Right, Compressor Input, 12 segments: |
Clip (+20), +15, +10, +6, +3, 0, -2, -4, -7, -10, -20, -30
0 LED = 0dBu |
| Compressor Gain Reduction, 12 segments: |
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15 dB |
| AC Power Requirements: |
| Power Consumption: |
| Onyx 32•4: |
100 watts |
| Onyx 24•4: |
120 watts |
| Universal AC Power Supply: |
| |
100 VAC - 240 VAC, 50-60 Hz |
| Physical Dimensions and Weight: |
| Onyx 24•4: |
| Height: |
7.3 in / 185 mm |
| Width: |
31.2 in / 792 mm |
| Depth: |
21.9 in / 555 mm |
| Weight: |
39.5 lb / 17.9 kg |
| Onyx 32•4: |
| Height: |
7.3 in / 185 mm |
| Width: |
39.8 in / 1011 mm |
| Depth: |
21.9 in / 555 mm |
| Weight: |
48.0 lb / 21.8 kg |
