Focusrite ISA 430 MKII User Manual page 25

Main Output
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Connector: XLR
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Signal: Balanced
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Operating Level: +4dBu
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Maximum O/P Level: +26dBu
Dynamic Link
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Connector: TRS Jack
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Signal: Tip = Compressor, Ring = Gate
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Links two ISA 430 MKII units to allow control of the
dynamics section of both units from one unit giving
accurate stereo dynamics control
Gate Key I/P + Comp Key I/P
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Connector: TRS (Stereo) Jack
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Signal: Balanced
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Operating Level: +4dBu
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Maximum I/P Level: +26dBu
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Drive the sidechains of the gate and compressor
respectively. N.B Comp Key I/P is not available in
Vintage mode.
ADC Input 1/Ext Sum Input
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Connector: XLR
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Signal: Balanced
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Operating Level: +4dBu
•
Maximum I/P Level: +22dBu=0dBFs in ADC input
mode, +26dBu in Ext Sum input mode
ADC Input 2
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Connector: XLR
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Signal: Balanced
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Maximum I/P Level: +22dBu=0dBFs
EQ (Shelving)
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Gain range: +/-18dB
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LF: 20Hz, 56Hz, 160Hz, 460Hz
•
LF (Hi Range in): 33Hz, 95Hz, 270Hz, 655Hz
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HF: 1k5Hz, 3k3Hz, 6k8Hz, 15kHz
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HF (Hi Range in): 2k2Hz, 4k7Hz, 10k, 18k
EQ (Parametric)
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Gain range: +/-18dB
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Variable Q
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LMF: 40-400Hz
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LMF (x3 in): 120-1200Hz
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HMF: 600-6kHz
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HMF (x3 in): 1k8-18kHz
EQ (Filters)
•
rd
3 Order
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18dB/Octave
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LPF: 400Hz-22kHz
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HPF: 20Hz-1k6Hz
Compressor (Class A VCA mode)
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Threshold Range: -28dB to +12dB
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Ratio: 1.5:1 to 10:1
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Slope: Soft knee
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Attack: 100µS to 100mS
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Release: 100mS to 7S, variable or auto (program
dependent)
Compressor (Vintage Opto mode)
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Threshold Range: -28dB to +12dB
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Ratio: 1.5:1 to 5:1 in Comp mode 5:1 to 20:1 in Lim
mode
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Slope: Soft knee in Comp mode, Hard knee in Lim
mode
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Attack: Fixed
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Release: Fixed
Limiter
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Threshold = -6dBfs (+16dBu)
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Attack time = instant
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Release time = instant
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Noise = -95dBu measured with a 20Hz/22kHz bandpass
filter
•
Limiter ratio is level dependent as follows:
Signal level
-6dBfs to –4dBfs
-4dBfs to 0dBfs
0dBfs to +6dBfs
Gate
•
Threshold Range: -40dB to +10dB
•
Gate Range: 0 to -80dB
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Attack: switched fast or slow
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Release: 100mS to 5S
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Hold: 20mS to 4S
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Expander Ratio: 0 to 5:1
De-Esser
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Threshold Range: 22dBu
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Frequency Range: 2k2Hz to 9k2Hz
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Ratio at Centre
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Frequency 2:1
Weight
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7kg (unpacked)
Dimensions
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484 x 250 x 88mm (2U rackmount)
25
Input to output level reduction ratio
1.5:1
2:1
Infinite:1