Care in installation can often avoid EMI induced problems. The follow-
ing practices should generally be observed in any application, and will
be especially important where EMI may be a problem.
Interconnect cables should be kept as short as possible (3 meters or
less), and shielded cable should be used (cable which has two center
conductors, and a separate external shield connected at only one end).
Physical location and cable “dress” can be an important factor in mini-
mizing hum pickup. The installation should situate the preamplifier well
away from the power amplifier, and power (ac mains) cords should be
dressed to remain at least 4" (100mm) away from input/output cables.
Connection
INPUT:
Connect the preamplifier to your Premier 140 amplifier at the
RCA type connectors located on the back of the amplifier.
OUTPUT:
Five way binding posts are provided for connection of your
loudspeakers, with correct spacing to accept a standard “double ba-
nana” plug (NOTE: Premier 140s sold in Europe and other countries re-
quiring “CE” marking will not accept banana plugs). These connectors
will also accept spade lugs, bare wire, or pin connectors. The two chan-
nels should be connected in correct “relative phase”. This means that
when the same signal is applied to both channels, the right and left
channels speaker diaphragms will move synchronously - in and out to-
gether.
Terminals on speakers are usually coded - one designated “C”,
“ground”, “-” or black, the other designated “+” or red. “In phase” con-
nection of the speakers can normally be achieved by taking care to con-
nect the wire from the “+” amplifier terminal to the red or “+” coded
terminal on each speaker, and connecting the “-” terminal to the black or
“-” coded terminal on each speaker.
In phase connection of the speakers can be readily ascertained by ear.
Listen to a recording of a solo vocalist (use a mono recording if avail-
able). With the speakers in phase the voice should be clearly focused
between the two speakers. With the speakers connected out of phase,
the voice will be diffused, with no identifiable source. Relative phase
may be reversed by switching the “+” and “-” leads at one speaker only.
Premier 140 Owner's Manual
5
Summary of Contents for Premier 140
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