Advent 300 User Manual

Symptom
Hum,
continued
Contininuous
background
buzz interferes
with
sound
during
Phono
operation
Howling
noise,
increasing
in
volume,
occurs
as
Volume
or
Bass
boost
is
increased
in
Phono
mode.
Possible
cause
Ground
wire
from
turntable
to
receiver
disconnected.
Phono
connecting
cables
picking
up TV
signals.
This
occurs
frequently
near TV
transmitters.
Feedback
ioop
occurs
when
the
phono
cartridge
resonates
from
loudspeaker
vibrations
which
are then
reproduced
through
the speakers.
Possible
solutions
Connect
ground
wire
from
turntable
to
Ground
screw
on
Model
300.
Experiment
with
position
of
connecting
cables to
minimize
interference.
The
sub-sonic
jilter
incorporated
in
the Model
300
rolls off
bass response
below
20
Hz,
minimizing
feedback
problems.
However,
should
acoustic
feedback
occur,
increase
the distance
between
the
record
player
and
loudspeakers;
or
improve
the
isolation
of the turntable.

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