Expert Notes; Sound Optimisation Tips - Lehmannaudio Decade Manual De Instrucciones

46 Decade

Expert notes

EN
The Decade can be adapted to virtually all commonly available
systems. The setting options are accessed by the toggle swit-
ches on the front panel or by the DIP switches located on the
bottom side of the device. Only the custom impedances need
to be fitted internally. These settings should only be performed
by a qualified technician. An Allen key to open the housing is
supplied with the device.
Interior view (detail)
R/C-1
1 | DIP switches
The DIP switches located on the bottom side of the Decade are used to adjust
both the terminal resistance and the input capacitance. You will find the setting
options on page 44 and 45.
2 | R/c-1 / R/c-2
These are free slots for custom impedances to be activated via the appropriate DIP
switches for both channels (no. 6 each). A resistor/capacitor plugged here will be
put in parallel to all other switch-activated impedance/capacitance values and to the
47 kohms/47 pF as well.

Sound optimisation tips

The Decade can only be as good as the signal supplied by the
turntable or pick-up system. Since playing back a record consists
of mechanical sampling with many important influencing vari-
ables, we provide some sound optimisation tips here. For high-
end record players in particular, you should consult your dealer
for the required service and adjustments.
1 | Adjusting the pick-up arm geometry and system should always be performed by
a specialist. In case of incorrect settings, the effects range from sound problems to
one-sided and therefore premature wear of the system. Good specialist dealers have
special measuring and adjusting equipment. It is much more accurate than what may
be included with the pick-up system.
1
2 | On record players with a sub-chassis, the vibration behaviour should also be
2
R/C-2
optimised by an expert. Sound improvements are possible here as well.
3 | Using a decoupling mat that contributes to better mechanical separation
between the record and turntable can further improve the sound quite significantly.
4 | Special attention should also be paid to the chosen cable materials and
assembly. This applies in particular to the system cables (headshell), the cables from
the pick-up to the Decade and the cables to the downstream pre-amplifier.
Decade 47
EN