Focusrite ISA Two Rackmount 2-Channel Microphone Preamp - Manual (Page 10)

10
English
Rear Panel
1 5 7 2 4
3
1 5 2 4
3 6
1. MIC INPUT (female XLR)
2. LINE INPUT (3-pole ¼”- TRS)
3. Insert SEND: sends the main mic/line/inst input for additional signal processing (3-pole ¼”-
TRS)
4. Insert RETURN: for externally processed signals - the Insert switch (10) on the front panel
should be active when in use (3-pole ¼”- TRS)
5. OUTPUT: the main mic/line/inst input signal, or the return signal when active, as selected by
the input switch on the front panel (male XLR)
6. PEAK METER CALIBRATION: allows calibration of the peak meters (see Metering for details)
7. Mains IEC connector
Rear Panel Sections
Analogue Inputs
The MIC INPUT and LINE INPUT can be used to connect an analogue source to the ISA Two. Phantom
power can be applied to the MIC INPUT connector by enabling the +48V switch. Note that phantom
power can be applied to the connector whether or not a microphone is connected, and is not recalled
after a power cycle. If you are unsure whether your microphone requires phantom power, refer to
its handbook. It is possible to damage some microphones (most notably ribbon microphones) by
providing phantom power to them.
Line-level signals use a balanced jack connector. Once connected, set the Input switch on the front
panel to Line.
Analogue Outputs
The analogue outputs at the rear of ISA Two use male XLR connectors.
Insert
The two insert connectors are for sending the selected signal to an external processor, such as a
compressor, and returning the processed signal back into the ISA Two. Connect SEND to the input of
the external processor and RETURN to the output of the processor, preferably with balanced cables
as both connectors are ¼” 3-pole TRS jacks. Make sure that the Insert switch is activated on the
front panel if using the insert facility.