Roland UA-25 - Manual (Page 9)

9
Front and rear panel
fig.front
fig.jack-type
1. Combo input jacks
These are analog audio input jacks with mic preamps.
They accommodate either XLR or phone plugs,
allowing you to connect a variety of equipment.
Either balanced or unbalanced signals may be
connected.
Phantom power (48 V) is provided for XLR type
connections, allowing you to connect condenser mics
that require phantom power. In this case, turn on the
phantom power switch (19) located on the rear
panel.
fig.XLR-TRS
* This instrument is equipped with
balanced (XLR/TRS) type input jacks.
Wiring diagrams for these jacks are
shown on the right. Make connections
after first checking the wiring
diagrams of other equipment you
intend to connect.
2. Input sensitivity knobs
These adjust the input level of the signals input to the front panel combo input
jacks (1) .
3. Input impedance select switch
Use this switch to select either high impedance (Hi-Z) or low impedance (Lo-Z) as
appropriate for the type of device connected to the INPUT 2/R phone type input
jack of the
combo input jacks (1) . Turn this switch on ( inward position) to
select high impedance (Hi-Z) if a guitar or bass is connected. Turn this switch off
(
outward position) to select low impedance (Lo-Z) if a microphone is connected.
Combo input jack INPUT 1/L is fixed at low impedance (Lo-Z).
Front panel
1
6 7 2
8 9
10 11
4 5 12
13
3
XLR plug
TRS phone
plug
(balanced)
Phone plug
(unbalanced)
1:GND
2:HOT
3:COLD
GND(SLEEVE)
HOT(TIP)
COLD(RING)
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