Hafler CI-1255e, User Manual

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CI-1255e™ Power Amplifier Hafler
Passion for Perfection
9
eCoSySTem™ eNeRGy SAvINGS
One of the best features with the Hafler CI-1255e is the energy-saving ECOSYSTEM
circuit. ECOSYSTEM automatically shuts of the amplifier when no signal is detected
after a minute. This of course saves on your electrical bill and because the amp is off,
it also reduces the heat being generated which means a reduction in air conditioning
costs!
As soon as a signal is detected on any of the inputs (the global bus or individual
channels) the CI-1255e will spring back to life in about 10 milliseconds – faster than
you can pronounce a consonant. Best of all, ECOSYSTEM is super quiet and pop-free.
When the ECOSYSTEM is activated, ECOSYSTEM LED will illuminate.
AdjuSTING The LeveLS IN The vARIouS zoNeS
Each of the 12 channels is equipped with individual level controls to set the music loudness for each of the zones. There is also a full
array of rear mounted LEDs that let you visually check to make sure you are getting a source signal when setting up the system. Using
a cell phone or tablet as a source during setup is made easy with the 3.5mm front panel input.
Start with the trim controls fully open (fully clockwise), and your preamp turned down. Turn on the source material and the amplifier,
check the LEDs to make sure signal is being received, and turn up the preamp until the desired level is achieved. If any of the zones
are too loud, you can use a tweaker or a small slot screwdriver to turn down on the associated trim controls for those channels.
The front panel is also equipped with the same array of signal presence LEDs along with a second series that shows clip levels. When
driven into the red, it is a good idea to back down the levels in order to prevent distortion and thermal overload.
AuTomATIC fAuLT-SAfe™ PRoTeCTIoN CIRCuITRy
Another great feature that is built into the CI-1255e is the Fault-Safe™ automatic protection mode. Each CI-1255e channel is
individually and fully protected against low impedance, overheating, overloading, over voltage and under voltage — should any of the
following faults occur, the CI-1255e will automatically shut down any affected channels. The protection circuitry automatically restores
the amplifier channel as soon as its fault returns to the safe operating range.