8
THE QURE is fitted with both XLR connectors and TRS stereo jacks
for balanced operation,though the jacks may be used with unba-
lanced connections simply by plugging in mono jack-plugs. The
level difference that normally occurs when a balanced input or
output is used unbalanced is automatically compensated for.
Should the need arise to use the XLR connectors in an unba-
lanced system, pin 3 of the XLRs should be grounded. Inserting a
mono jack also unbalances the XLRs.
Both output stages operate in parallel, so it is possible to
connect two different destination units simultaneously, for
example to record to two different media at the same time or split
the output between a mixer and effects processor. However, only
one type of input (jack or XLR) should be connected at a time –
the Q
URE is not intended to be used as a mixer!
To ensure optimal signal quality, SPL has developed a super-
balancing hybrid input/output stage using all laser-trimmed resi-
stors with a tolerance of 0.01%.This approach has resulted in high
CCMR (common mode rejection) values better than -90 dB at
1 kHz.
As a precaution, before connecting the Q
URE switch off the
power to the unit and to all connected units.
Connections
1
2
3
Pin wiring: XLR connectors
1=GND 2=Hot(+) 3=Cold(-)
Pin wiring: Stereo Jack plug
Tip=Hot(+) Ring=Cold(-) Sleeve=GND
