Advent 300 Guía para resolver problemas descargar pdf (Pagina 23)

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.

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