d&b audiotechnik Q7, Руководство пользователя

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Operation with E-PAC
Selecting Q7 mode enables the E-PAC to drive one Q7 loudspeaker.
LO IMP mode configures the E-PAC to drive a maximum of two Q7
loudspeakers with a 6 dB reduction in input level to the loudspeakers.
For acoustic adjustment the functions CUT and CPL can be selected. The
characteristics of the CUT and CPL settings are explained in the
previous section "Operation with D6 or D12 - Controller settings".
The E-PAC CPL circuit creates a 3 dB attenuation corresponding with
the –3 dB curve shown in Fig. 4.
Dispersion characteristics
The graphs below show dispersion angle over frequency of a single Q7
cabinet plotted using lines of equal sound pressure (isobars) at –6 dB
and –12 dB.
Fig. 5: Isobar diagram Q7 horizontal,
standard set up Fig. 6: Isobar diagram Q7 vertical,
standard set up
Fig. 7: Isobar diagram Q7 horizontal,
horizontal set up with the horn rotated Fig. 8: Isobar diagram Q7 vertical,
horizontal set up with the horn rotated
Q7 Manual (2.5 EN) Page 6 of 10