User manual

C6/C690 Data Sheet C6
Frequency response correction of HFA circuit
(only available with E-PAC)
-5
0
5
10
-10
-15
-20
-25
-30
20 100 1k 10k
20k
C6 Isobar diagram
HFA setting
In HFA mode (High Frequency Attenuation), the HF response of the
C6 system is rolled off. The HFA circuit configures the C6
loudspeakers to provide a natural, balanced frequency response
when a unit 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.
Dispersion characteristics
The diagrams below show dispersion angle vs frequency plotted
using lines of equal sound pressure (isobars) at -6 dB and -12 dB.
The nominal 60° horizontal dispersion is maintained from 20 kHz
down to 2 kHz.