d&b audiotechnik T10, Руководство пользователя

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extended near field. The transition from "Line" to "Arc"
configuration within the array is made according to the splay
progression but may allow for certain deviations due to the wiring
of the cabinets in groups of up to four.
"T10 PS" setup
This setup has to be selected when T10 loudspeakers are
configured as a point source or when used as single cabinets with
horn in line array configuration (e.g. front fill or ceiling mounted).
2.3.1. Controller settings
For acoustic adjustment the functions CUT, HFA, HFC and CPL can
be selected.
CUT mode
Set to CUT, the low frequency level is reduced. The T10 is now
configured for use with the T-SUB or other d&b active subwoofers.
HFA mode (T10 PS setup only)
In HFA mode (High Frequency Attenuation), the HF response of the
system is rolled off. HFA provides a natural, balanced frequency
response when a cabinet is placed close to listeners in near field or
delay use.
High Frequency Attenuation begins gradually at 1 kHz, dropping
by approximately 3 dB at 10 kHz. This roll off mimics the decline
in frequency response experienced when listening to a system from
a distance in a typically reverberant room or auditorium.
HFC function (T10 Arc/Line setups only)
Selecting the HFC (High Frequency Compensation) function
compensates for loss of high frequency energy due to absorption
in air when loudspeakers are used to cover far field listening
positions.
The HFC function has two settings (HFC1, HFC2) for different
distances the cabinets need to cover. The settings should be used
selectively; HFC1 for cabinets covering distances larger than 25 m
(80 ft) and HFC2 for those covering distances larger than 50 m
(160 ft).
The compensation is adjusted for a typical relative humidity of
40 %. With lower humidity the absorption by air increases
therefore the distances where the respective HFC setting provides a
correct equalization are shorter than indicated above.
Using the HFC function provides the correct sound balance
between close and remote audience areas, whilst all amplifiers
driving the array can be fed with the same signal.
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Frequency response correction in HFA mode
Frequency response correction of the HFC function
d&b T10 Manual 1.1 en 7