10
(13) FUSE Receptacle –
The SOLO/610 uses a fuse for circuit protection. Replace the fuse with the
same rating and type only. If the fuse is blown repeatedly, contact UA service. IMPORTANT: The fuse
value must be changed if the input voltage is changed. See the Maintenance section on page 18 for
detailed information.
(14) POWER Switch –
Applies power to the SOLO/610 (up position) or turns the power off (down
position). When powered on, the front panel POWER LED illuminates.
(15) MIC/LINE Switch –
Affects the signal level (amplitude) at the OUTPUT jack. In normal operation,
the switch should remain in the LINE (down) position, for connecting the SOLO/610 to line-level inputs
such as an audio interface, recorder, mixer line-level input, etcetera.
The MIC/LINE switch is essentially a “pad” for the output signal. Setting the switch to MIC attenuates
(lowers) the signal by 37 dB, for connection to inputs that require a mic-level signal, such as another
mic preamp, a mixer “mic” input, or similar low-level input.
For additional information about this switch, see “Application Notes” on page 12.
(16)
OUTPUT Jack –
This balanced XLR connector outputs the SOLO/610 signal. Note that Pin 2 is
positive when the front panel Polarity switch is in the down position (IN ø). Pin 3 is positive when the
front panel Polarity switch is in the up position (OUT ø).
(17)
GND/LIFT Switch –
This switch affects the grounding of the OUTPUT jack. When the switch is in
the GND (ground) position, pin 3 of the XLR is tied to the chassis ground. When in the LIFT position, pin
3 is disconnected from the chassis ground. In normal operation, this switch should be left in the GND
position. If the output signal contains a hum or buzz due to ground loops, changing the switch to LIFT
may alleviate these undesirable noises.
(18)
MIC INPUT Jack –
Connect a microphone to this standard XLR connector. Pin 2 is wired positive
(hot). +48 V phantom power is available via the front panel switch.
