I
nstallation
The first step is to
remove the transit screws
. To minimize microphon-
ics, the critical audio circuits in the Premier Fifteen are on a sub-chassis
that is mounted to the main chassis with flexible isolation mounts. To
prevent damage during shipping, this assembly is secured by four
screws through the bottom of the chassis. These transist screws can be
readily identified as the four silver screws on white nylon washers.
Before installing your Premier Fifteen, remove these four screws to
release the suspension. Save these screws to re-use if it becomes
necessary to ship your Premier Fifteen.
Set Up
The Premier Fifteen dissipates sufficient heat that it must be adequately
ventilated. Mount the unit horizontally on a flat, hard surface, and take
care that the ventilation holes in the bottom are unobstructed. Allow at
least two inches of clearance above the unit and keep the cabinet or
shelf open at the back. Vertical installation is not recommended.
All Premier Fifteens sold in the United States are configured for opera-
tion on a 60Hz ac power line producing between 108 and 126 volts.
Export versions of the Premier Fifteen will have the correct operating
voltage and frequency clearly marked on the back panel of the unit, near
the ac power cord. In all cases, the actual line voltage should be within
+ 5/- 10% of the nominal rated voltage.
Electromagnetic Interference (EMI)
Considerable care has been taken in the design of the Premier Fifteen
to minimize it’s susceptibility to radio frequency interference and other
forms of EMI. Choice of materials, physical layout, grounding practice,
and power supply design have all been specified with a view to reducing
the impact of electromagnetic fields on the performance of this unit. At
the same time, however, our primary goal is the accurate reproduction
of recorded music in the normal home environment, and we have
elected not to compromise this objective by the application of heavy-
handed RFI filters, or by using grounding practices that reduce RFI at
the expense of degraded audio performance. We find that the approach
we have taken has worked extremely well, resulting in only rare in-
Premier Fifteen Owner’s Manual
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