Lehmannaudio Decade - Page 12

Signal on one
channel only.
The DIP switches are
unevenly set.
Check the positions of both
DIP switches. Make sure that
the settings are equal on both
channels.
One connection lead
has a loose contact, is
not well plugged in or
defective.
Check the connection leads
for slack joints, loose pushfits
or defects and, if necessary,
replace them. Potential causes:
system cable (headshell),
tonearm cable from turntable
to Decade and line cable from
Decade to the following input.
The subsequent input
stage is defective.
Check by connecting to differ-
ent line inputs.
Left and right
channels are
reversed.
The channels were re-
versed in the connection
lead.
Check the connection leads and
swap the channels here, if nec-
essary. Potential causes: system
cable (headshell), tonearm cable
from turntable to Decade and
line cable from Decade to the
following input.
Signal level is too
low.
Non-optimal matching
between pickup cartridge
and Decade.
Increase the gain factor ac-
cording to this user manual
by means of the switches
located on the front panel of
the Decade.
The selected input im-
pedance on the Decade is
too low.
Select a resistance value for the
input impedance which is at
least 10 times greater than the
pickup’s system impedance.
Signal is soft and
muffled.
An MC impedance has
been selected for an MM
system.
Deactivate all MC impedances
via DIP switch. Also watch out
for a custom impedance that
may be plugged in.
Signal sounds
distorted.
The gain is set too high
on the Decade.
Lower the gain factor according
to this user manual by means
of the switches located on the
front panel of the Decade.
The output of the Dec-
ade is connected to the
subsequent phono input.
Connect the output of the
Decade to a line input on the
following amp.
The signal sounds
hollow, without
a proper bass and
localisation.
The pickup system has
been connected phase-
reversed.
Connect the system cable
in-phase.
Audible hum.
The tonearm ground is
not connected on the
Decade.
Connect the tonearm ground
on the Decade.
Several connected devices
create a ground loop.
Make a correct grounding con-
nection. If required, consult an
electrician.
There is an interference
caused by some other
power consumer.
One by one, disconnect all
devices connected to the same
electric circuit and listen to the
effect. Keep the interfering
device turned off during music
listening or use a mains filter to
connect it to the electric circuit.
The mains transformer of
a device placed nearby is
causing interference at
the input.
Make sure the distance
between your hifi chain and
interfering devices is sufficient.
50
EN
Decade
51
EN
Decade