Q4 audio GE134, Руководство пользователя

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1. Balanced input XLR-3. The input impedance is 20K Ohm bal-
anced or 10K unbalanced. Each input leg has the same im-
pedance to ground to maximise input common mode rejection
ratio, independent of source impedance. The maximum over-
load level of the input circuitry is +21dBu. Pin 1 of the input
connector is connected to chassis ground. Pin 2 is the non-
inverting (positive,) pin 3 the inverting (negative) input, con-
form international standards.
2. Balanced output XLR -3. The output impedance is 100 Ohm
balanced or 50 Ohm unbalanced. The output can drive +21dBu
into 600 Ohm with low distortion. Pin 1 is connected to chassis
ground. Pin 2 is the non-inverting (positive,) pin 3 the inverting
(negative) input, conform international standards.
3. Mains inlet and fuseholder. The mains connector is a stand-
ard 3 pin IEC connector. The centre terminal is directly con-
nected to the chassis of the unit and must be connected to the
earth terminal of the mains outlet. This is important for your
safety. The mains cable supplied with this unit is a universal
European model. Use only the polarised mains plug option
together with a polarised receptacle. This unit is equipped
with a single pole disconnect device (fuse) in the phase wire. If
an unpolarised mains connection is used the receptacle the
unit is connected to must be equipped with a two pole discon-
nect device (fuse) of appropriate rating. In case the mains
plug on the mains cable is not conform to your local standard,
you will need to replace it with a suitable one. In this case it is
very important to respect the colour coding of the wires:
yellow/green : earth ground
brown or black : phase (live)
blue : neutral
The mains fuse is a standard 5x20mm fuse. Rating is indi-
cated on the type label on the back of the unit. The fuse drawer
can easily be opened with a flat tip screwdriver. For safety
reasons, the mains cable must be removed before the drawer
can be opened. Replace only with the same fuse type and
rating. The auto-ranging power supply of the GE series guar-
antees trouble free operation all over the world, independent
of local mains conditions. Acceptable mains voltages are in
the range from 85 to 264 Vrms 50/60Hz. When mains power is
removed, the unit automatically switches to the bypass mode,
hardware linking the input to the output by means of the fail-
safe relay.
4. The screws on both sides of the mains inlet are essential for
the safety of the unit. These screws connect the earth pin of
the mains connector to the chassis. These screws must be
well tightened at all times.
5. (GE134 only) 15pin SubD system connector. This connector
integrates the equaliser in the optional Q4audio equaliser
drawer.