Universal Audio 4-710d Four-Channel Tone-Blending - Manual (Page 16)

Rear Panel
16
Two 4-710d units can combined using these inputs to obtain eight mic pre channels on one 8-channel
digital stream. Simply connect the channel 1–4 line outputs of the first unit to the line inputs 5–8 of
the second unit; the digital outputs of the second unit will now contain the combined mic pres of both
units!
Note: There are no analog outputs for line inputs 5–8.
(8) Line Output - A balanced XLR connector that carries the line-level output signal of the 4-710d
channel. Note that Pin 2 is positive when the front panel Polarity switch ( #11 on page 11) is off (IN
ø). Pin 3 is positive when the front panel Polarity switch is engaged (OUT ø).
(9) Line Input - Connect any line-level input signal (coming from a device such as a mixer, DAW, tape
machine, or signal processor) into this balanced XLR connector. Pin 2 is wired positive (hot).
Any ¼” phone plug line-level output can also be connected to the Insert Return jack (
 #12 below),
and if the Insert switch for the channel ( #12 on page 11) is engaged, that signal will be used for
the channel input instead of the XLR line input.
(10) Mic Input - Connect a microphone to this standard XLR connector. Pin 2 is wired positive (hot).
+48V phantom power is available via the front panel switch.
Insert Loop - An external audio processor (for example, EQ or compressor) can be inserted into the
analog path of channels 1-4 using the Insert Loop for additional processing of the channel’s signal
using the Send and Return jacks (#11 and #12 below). The Insert Loop can be enabled or disabled
using the Insert switch for the channel on the front panel ( #12 on page 11).
(11) Insert Send – Connect this jack to the audio input of the external processor. The signal at this
jack is post-preamp, so all level and sonic changes made with the associated channel’s front panel
controls will be reflected here. The jack is “half-normalled” which means you can extract the channel’s
signal from here even if you don’t use the associated Insert Return. This is handy for routing the signal
to a monitor mix, tuner, etc.
The signal at the Insert Send jack is identical to the signal at the XLR Line Output jack. Both channel
outputs can be used simultaneously without any signal loading issues.
(12) Insert Return– Connect this jack to the audio output of the external processor. The signal at this
jack is only audible if the associated channel’s Insert switch on the front panel ( #12 on page 11) is
engaged.
The Insert Return jack can be used as a ¼” line input for the channel in lieu of the XLR input. The
Insert Return is used as the input when the channel’s Insert switch ( #12 on page 11) is engaged.
 Since the connectors for channels 1–4 are identical, each is only described once below.
 All Insert connections accept standard ¼” male phone plugs. Balanced TRS and
unbalanced TS connectors can be used.