Canton Sound M Operating Instructions Manual page 43

Problem Possible cause
Sound M 1� Signal cables from the source device to the
is buzzing� Sound M are too long (Analog Line)�
2� Used signal cable not shielded or the shield on
the cable used is interrupted (defective)�
3� Ground loop (hum loop) "generated"�
A ground loop can occur if at least two
interconnected devices with safety plugs
(e�g� amplifier and computer) are connected to
locally separated power outlets�
4� A non-interference suppressed consumer
(e�g� fridge) on the same electricity network�
The Sound M 2� This can happen when your (mobile) device is
unintentionally switches playing system sounds such as when typing on
on� the keyboard, a digital source is turned on, or an
analog source is playing�
Solution
1� Use shorter and/or higher quality signal cables�
2� Replace the cable with a shielded
and/or higher quality cable�
3� Connect all devices connected to the Sound M
with a safety plug to a power strip (multiple socket)�
4� For testing purposes, turn off any possible sources of interfe-
rence; have the relevant device suppressed for interference,
if the humming sound disappears, or initially connect the
source of interference to another mains phase (L1, L2 or L3)
(consult a specialist if necessary); Insert a special "sheath
current filter" (available from specialist retailers) between the
amplifier and the Sound M to eliminate the humming� Turn
the power plug round to reduce the so-called hum voltage
(particularly important
if the source device is not earthed)�
2� Change the standby function from AUTO / [AUT] to ECO /
[ECO], MANUAL / [MAN] or NETWORK / [NSB]�
English
3 4 3