Concept 16 5 owners manual schematic

Page 2

A Note On High-Powered
Receivers

The extremely high power output
capability of your Concept receiver
will enable you to hear undistorted
musical peaks, and bring fresh
clarity and detail to your music.
There are, however, a few things
you should keep in mind regarding
the high power capacity and what
it can do.

Concepts amplifier is direct»
coupled, with no capacitors or
filters between the output
transistors and the speakers. Any
audio input is passed directly to
the speakers, no matter how low
the frequency. Thus, any sonic
deficiencies in your other
components will become very
apparent. For this reason, you
should use only the highest quality
associated equipment. Inferior
turntables can cause special
problems; they're likely to have
excessive rumble, and the low
rumble frequencies have the
potential to damage many
speakers.

You should also be careful when
handling your record player.
Dropping the tonearm on the
record, or flicking dust from the
stylus, Wlth the volume up, can
send a power surge that may
damage your woofer. Its good
practice to turn the volume down
whenever you're changing a record.

Check the power-handling
capacity of your speakers; if its
modest, you might want to fuse
your speakers. Your Concept
dealer can advise you on that.
Prolonged operation at very high
volume levels can also cause
excessive heat to build up in the
voice coils of the speakers,
shortening their lifespan. This is
especially true of the relatively low-
efficiency acoustic suspension
bookshelf-type speakers. Sonically,
they benefit most from the high
power, but prolonged overdriving
can lead to premature speaker
failure.

Introduction

Thank you for choosing 3
Concept receiver. We think youll
most appreciate this product if you
understand it in the context of its
design philosophy. Take a few
minutes and read this manual
before you set up the receiver; it'll
save you a lot of time, and will
help you get the full potential from
the Concept.

The Concept 16.5 is the result of
a concentrated effort to desngn a
line of stereo receivers without
compromise. Every detail, from the
action of the controls to the
surface area of the internal heat
sinks, has been carefully thought
out and crafted by a distinguished
international team of designers and
production engineers. A laboraton/
standard of performance is
augmented by bold visual
definition. The final product is a
finelytcrafted instrument that will
satisfy the most discerning
audiophile.

A myriad of design innovations
make the Concept 16.5 as easy to
use as to listen to. Most of the
binary functions are controlled by
newly engineered pushbuttons for
maximum operational simplicity.
The buttons themselves use light-
emitting diodes to provide positive
visual indication of the function.

The Concept 16.5 volume and
tone controls have multiple detents
to allow precise adjustments that
are eaSily repeatable. A unique
four-range tone control system
offers a new level of control over
the frequency response, so you
can get the best possible sound in
any environment. The innovative
loudness contour is adjustable, so
you get the precise amount of
loudness compensation necessary
for your speakers at any volume.

A sophisticated tuner section
will match the performance of the
finest separate tuners. Effective
application is made of a 5-gang
tuning assembly, full Quadrature
detector, hand-picked filter
elements and the latest Phase»
Lock Loop circuitry. Many of the
FM specifications exceed the
limits of the latest test equipment.
Tuning itself is unusually smooth,
due in part to the massive internal
flywheel and bearing assembly.
Exact tuning is aided by a pair of
calibrated meters and a stereo
indicator light.

The hallmark of the Concept 16.5
is a standard of accuracy unmarred
by significant audible or
measurable distortion. This has
been achieved by selecting only
premium-quality parts and
operating them far below their
rated capabilities. A deliberate
benefit of this design criterion is a
dramatic decrease of breakdown
due to parts failure.

Surely this is the most ambitious
way to create a product, but
consistent with making the
Concept 16.5 receiver the ultimate
synthesis of the technical, the
visual, and the tactile.

Unpacking

Save the shipping carton and all
packing materials. Theyll assure
the receiver's safety should you
ever move or ship the unit.

Record the serial number of
Concept 16.5 in the space provided
here. The number may be found on
the rear panel of you receiver.

Serial Number:

Date of Purchase:

Placement

You should, of course, place
your receiver where its most
convenient. However, keep it away
from direct sunlight or any other
heat source, and dont block the
vents on the underside of the unit.
CAUTION: To prevent fire and
avoid shock hazard, do not expose
the receiver to rain or moisture.
Also, as the 16.5 is very heavy,
you should be sure its on a
secure shelf.