Hafler CI-1255e, Руководство пользователя

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CI-1255e™ Power Amplifi er Hafl er
Passion for Perfection
5
CoNNeCTING The PoWeR
Your Hafl er amplifi er has been factory set for use in your country. If you are in the United States or Canada or other countries that
employ 110-120 volts, the rear panel voltage switch will be factory set to 115 volts. If you are in Europe, the United Kingdom, Australia
or other countries that employ 220-240 volts, the rear panel voltage switch will be factory set to 230 volts. The CI-1255e is designed to
safely handle a fairly wide voltage range at the input to address most needs. It is a good idea to check the voltage just in case it has not
be set properly. The voltage should clearly appear in the window. If not correct, you can change it by removing the protective window
using a hex screwdriver and set it as needed. It is a good idea that you have a qualifi ed service technician verify this on your behalf.
Your Hafl er CI-1255e comes with a standard IEC 3-prong plug with an integral safety ground. This is there to protect you should the
electrical system develop a fault. It is both illegal and extremely dangerous to remove the third safety ground. This is sometimes done
in order to try to reduce system noise. If you encounter noise, the most effective method of reducing it is to insert the Hafl er CI9012,
CI9022 or CI9024 balancing/isolating modules into the Omniport, or by inserting a Jensen Iso-Max CI-2RR onto any of the offending
channels. These are easily installed in series at the input of the amplifi er and provide an effective and safe means of eliminating
system noise.
Connecting the speaker cable from the CI-1255e is done using
a series of detachable euro-block (Phoenix style) connectors.
These snap in and out of place for a secure lock and the
wire is inserted and the screwed down into place using a
fl at-blade screwdriver or tweaker. Disconnect the euro-block
connectors from the amp to connect the speaker wires and
then reconnect once all the zones have been determined.
CoNNeCTING The SPeAkeRS
Before making connections, ensure the amplifi er is turned off along with all of the source
equipment. This will avoid loud plug in and connection transients that can damage more
sensitive components such as tweeters.
It is also very important that you do not connect loudspeakers that are below the designated
impedance. Your Hafl er CI-1255e is capable of driving loads down to 4 ohms, but not less.
Driving loads below the rated impedance can lead to overheating and premature part failure.
For greater effi ciency, you should also use suffi ciently large speaker cable gauge that correlates
to the length of cable in use. Proper speaker wire selection will also improve the performance
of the amplifi er and resulting sound. The following table has been prepared as a reference:
Recommended speaker wire (core size)
DISTANCE IMPERIAL (gauge) DISTANCE METRIC (Conductor OD)
25 feet 18 AWG 8 meters 1.02 mm
50 feet 16 AWG 15 meters 1.29 mm
100 feet 14 AWG 30 meters 1.63 mm
150 feet 12 AWG 45 meters 2.05 mm
200 feet 10 AWG 60 meters 2.59 mm
ImPoRTANT NoTe
Your loudspeakers should be able to handle a minimum of 100 Watts peak (60 watts RMS) to ensure that the CI-1255e does not
damage them if driven hard.
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SPEAKERS