Channel setup
7.8.2 LoadMatch
Selecting «LoadMatch» on the Speaker setup screen opens the
corresponding subscreen.
Þ
To activate LoadMatch, tap the On/Off button on the left next
to the «Cable length» input field.
For applicable loudspeakers, the d&b LoadMatch function enables
the amplifier to electrically compensate for the properties of the
loudspeaker cable used which would otherwise change the tonal
balance of the loudspeaker. The function covers a bandwidth of up
to 20 kHz.
LoadMatch does not require an additional sense wire and is
therefore applicable with any connector type used.
Note: Applying LoadMatch might slightly reduce available
headroom as it does not (and should not) influence the limiter
thresholds.
To provide optimum compensation, LoadMatch requires the entry
of the following three parameters:
Cable length
Length of the cable in meters in steps of 5 m.
Þ
The corresponding length in "ft" is
displayed on the bottom left of the input
field.
Speaker count Number of cabinets connected.
Cross-section
Cross section in square millimeters (mm
2
) in
steps of 0.5 mm
2
up to a maximum of
10.0 mm
2
.
Þ
The corresponding "AWG" value is
displayed on the bottom left of the input
field.
Þ
The resulting cable impedance is shown
as an ohmic value in the
«Cable impedance» information field
underneath.
Maximum gain reached
The message «Maximum gain reached» is displayed when the
maximum compensation that the specific loudspeaker setup allows
as a balance between sonic accuracy and headroom has been
reached.
d&b D40 Reference manual 1.5 en 53
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