BIG KNOB
BIG KNOB
16
Appendix C: Technical Info
Big Knob Specifications
Frequency Response
Line-level Inputs and Outputs
+0, –1 dB, 10 Hz to 50 kHz
+0, –3 dB, 5 Hz to 100 kHz
RIAA Equalization Deviation (Phono Input)
± 0.5 dB from 20 Hz to 20 kHz
Distortion (THD & IMD)
Line-level Inputs to Line-level Outputs (unity gain)
> 0.015%, 20 Hz to 20 kHz @ +4 dBu
RIAA Input, Nominal Gain
> 0.015%, 20 Hz to 20 kHz @ +4 dBu
Noise Floor
(20 kHz Bandwidth, +4 dB level setting, 150
Ω
source)
Unity Gain, with DAW, 2-Track A, and 2-Track B Assigned
–86 dBu maximum (all outputs)
Monitor A, B, and C Outputs, Studio Output, DAW, 2-Track A,
and 2-Track B Outputs
–90 dBu typical
Phono Input (nominal 41.8 dB gain @ 1 kHz, inputs shorted)
–71 dBu maximum (all outputs)
Equivalent Input Noise (E.I.N.)
0.89 µV / –119 dBu maximum
Dynamic Range
Line Inputs
112 dB minimum
Phono Input
93 dB minimum
Common Mode Rejection Ratio
(20 Hz to 20 kHz @ +4 dB level setting)
34 dB minimum
40 dB typical
Crosstalk
Adjacent Inputs
90 dB @ 1 kHz
Left to Right/Right to Left
70 dB @ 1 kHz
Muted/Level Off
90 dB @ 1 kHz
Trim Control Range
Input Trim Controls (Center Detented)
±10 dB
Output Trim Controls
–14 dB to 0 dB
Dim Switch
0 dB/–20 dB
Rated Input Voltage
Line Inputs (+4 dB Level Setting)
+4 dBu/+28 dBu (nominal/maximum)
Line Inputs (–10 dB Level Setting)
–10 dBu/+14 dBu (nominal/maximum)
RIAA Input (@ 1 kHz, nominal gain)
5 mV/79 mV (nominal/maximum)
Rated Output Voltage
All Line-level Outputs (+4dB Level Setting)
+4 dBu/+22 dBu (nominal/maximum)
All Line-level Outputs (–10 dB Level Setting)
–10 dBu/+8 dBu (nominal/maximum)
Maximum Voltage Gain
DAW, 2-Track A, and 2-Track B Input to:
Monitor A, B, and C Outputs
34 dB
DAW, 2-Track A, 2-Track B, and Phones Amp Outputs
24 dB
Studio Output
34 dB
Phones 1 and 2 Outputs
34 dB (output loaded @ 100 k
Ω
)
DAW Phone Mix Input to:
Phones Amp Outputs
14 dB
Studio Output
24 dB
Phones 1 and 2 Outputs
24 dB (output loaded @ 100 k
Ω
)
Phono Input @ 1 kHz to:
Monitor A, B, and C Outputs
67.8 dB
DAW, 2-Track A, 2-Track B, and Phones Amp Outputs
57.8 dB
Studio Output
67.8 dB
Phones 1 and 2 Outputs
67.8 dB (output loaded @ 100 k
Ω
)
Input Impedance
Line Input
24 k
Ω
balanced
12 k
Ω
unbalanced
Phono Input
47 k
Ω
|| 220 pF
Output Impedance
Line Output
300
Ω
balanced
150
Ω
unbalanced
Headphone Output
150
Ω
