Advent 300 User Manual

Notes on operating the Model
300
Volume The relationship between the Volume
setting and power output of the Model
300
is
not
linear. Setting the Volume control at half rota
tion does not mean that you are using half the
power of which the receiver is
capable. For
example, if there
is no
signal
input, there will be
no power output, no matter what the Volume
setting.
The
Volume
control adjusts gain
(much
like a
faucet regulates the flow of water from
a pipe),
while the level
of
the
signal to be amplified
determines power output to achieve
a
given vol
ume level (just
as
water
pressure determines
how far the faucet must be opened to allow
a
given volume of water to
pass
through). Tithe
output level of a tape recorder in your system is
significantly below that of the Model
300’s
phono preamp, the Volume setting will be
higher for tape listening
than for disc listening
at the same subjective volume level. Power
out
put, however,
will be the same.
As
you turn up the Volume control of the
Model
300, distortion remains
constantly low until the
point of amplifier overload is reached.
The point
at which amplifier “clipping”
occurs will vary
considerably with the dynamic range of
the
musical material, its bass content, and the set
ting of the Bass control. When you exceed the
maximum undistorted output into your speaker
system,
music will start to sound distorted, i.e.
harsh, gritty, or fuzzy.
While the Model
300 can be
operated
at or near
clipping for sustained periods of time without
audible strain or impairment, prolonged oper
ation at
severely distorted volume levels can
damage your loudspeakers.
Bass and Treble Bass and Treble
controls
pro
vide carefully tailored adjustment of bass and
treble balance relative to the middle
register.
The Bass control has a sliding inflection point to
allow correction of only the lowest bass with a
small rotation of the knob, and
it
affects
a
wider
range of low frequency tones with increasing
deflection from the center position. The Treble
control has a fixed hinge point, as an overall
sloping response provides the most useful
adjustment on treble tones.
At low-to-moderate volumes, large
rotations of
the
tone controls to boost bass and or treble
can replace or augment the operation of the
Loudness
switch, compensating for the changes

Advent 300 Specifications

General

Frequency Response	20Hz to 20kHz
Total Harmonic Distortion	0.5%
Input sensitivity	2.5mV (MM), 150mV (line)
Output	150mV (line)
Speaker load impedance	4Ω to 16Ω
Weight	6.8 kg
Tuning range	FM