d&b D80 - Manual (Page 62)

10.8.2. 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. This function, which covers a bandwidth
of up to 20 kHz, preserves the tonal balance when cable lengths
of up to 70 m (230 ft) are used.
LoadMatch does not require an additional sense wire and is
therefore applicable with any connector type used.
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
Depending on the LoadMatch settings, the message
«Maximum gain reached» indicates the limit up to which the
LoadMatch function works.
d&b D80 Manual 1.9 en 62