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minimize sonic loss but also have immu-
nity to induced noise, especially for instal-
lations using long cable lengths..Balan-
ced connections have 6dB more gain
than single-ended connections. When
level matching is critical, keep this speci-
fication in mind.
WARNING
Use only one set of inputs to the amplifier at a
time. The KAV-250a amplifier is shipped with
shorting pins in the XLR inputs. These pins
should remain in the XLR inputs if the
KAV-250a amplifier is operating in the single-
ended mode. When the shorting pin is insert-
ed, pins 1 and 3 are shorted together. The
shorting pins must be removed to connect the
KAV-250a amplifier for balanced operation.
The XLR pin configuration is described below:
Pin 1 Ground
Pin 2 Non-inverting (0
°)
Pin 3 Inverting (180
°)
3. Insert the AC power cord into the recepta-
cle located on the back of the KAV-250a
amplifier. Insert the other end into the AC
wall receptacle.
4. The amplifier is now ~eady for operation.
See Amplifier Operation, on page 7.
Linking Multiple Amplifiers--
Multi Amp Throughput
TM
(MAT
Ti)
For systems containing multiple amplifiers,
Multi Amp Throughput
TM
(MAT
~M)
simplifies
installations. MAT
~-M
provides a daisy-chain
system option that reduces installation
complexity and cabling requirements. To
use this option, connect the outputs of the
amplifier (either balanced via XLR or single-
ended via RCA connectors) to the inputs of
another amplifier. The output of the first
amplifier sends the preamplifier signal to
the next amplifier in the chain.
12 VDC REMOTE POWER IN
This input accepts 12 volt power on/off sig-
nals from other Krell components, as well
as from other devices that incorporate a 12
volt power on/off trigger output. This allows
for remote turn on/off of the KAV-250a with
the power activation of another Krell com-
ponent as well as with with other compo-
nents used in a custom installation.
12 VDC REMOTE POWER OUT
This output sends 12 volt power on/off sig-
nals to other Krell components, as well as
other devices that incorporate a 12 volt
power on/off trigger input. This allows for
remote turn on/off of the KAV-250a with the
power activation of another Krell compo~
nent as well as with other components used
in a custom installation,
NOTE: Consult the owner’s manual of any
device used in a custom installation to take
full advantage of the remote capability of
the KA V-250a.
KRELL
®
KAV-250a English Page 5 of 12