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2.4 Amplifier to Speaker Connections
All connections should be made with the amplifier switched OFF. Ensure the integrity of all connections prior to switching the amplifier ON.
KEF Reference Series loudspeakers are fitted with purpose designed gold-plated Tri-wire/Tri-amp terminals which will accept either bare wire
or spade connectors.
Most good quality speaker cables have some indication, such as colour coding or ‘ribbing’ on the insulating material, as to which conductor
is ‘+’ or positive. Connection to the speakers can then be made as follows:
The left channel amplifier output terminal marked ‘+’ or coloured RED connects to the left speaker terminal marked ‘+’. The left channel
amplifier output terminal marked ‘-’ or coloured BLACK connects to the left speaker terminal marked ‘-’. Similarly, these instructions should
be followed for making connections between the right channel amplifier output and the right speaker. Correct polarity is vital to the proper
operation of the system.
Bare wire connections are the most popular and involve stripping 12.5mm (1.2”) of insulation to expose the speaker wire core. (You should
twist together, using clean fingers, the ends of each multi-stranded core prior to the next stage to ensure a better signal contact). Having
unscrewed the lower terminal cap, push the wire through the exposed hole in the terminal body and screw the cap down tightly.
Make sure that no stray strands come into contact with the opposite terminal; this could cause a short circuit between the terminals and
may damage your amplifier.
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