Copland DRC205, Руководство пользователя

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Pre-programmed playback mode A2 changes the overall sound characteristics to the
below frequency response. The basic characteristics of A2 is that the acoustics energy in the
bass range which by nature is boosted by room reflections is re-created, however without the
room acoustics problems negative impact. To avoid the sound of the audio system being too
bright (and hereby “technical” rather than “musical”) a slight attenuation in higher mid-range
and lower high-range is applied. Controlled roll-off in the upper octave is applied.
A2 is advantageous to a very wide range of audio systems and is recommended
for users with personal preferences of “musical” sound characteristic rather than
“technical” sound characteristics.
10Hz 50Hz 100Hz 500Hz 1kHz 5kHz 10kHz 20kHz
0dB
-4dB
-8dB
-12dB
-16dB
+ 4dB
+ 8dB
+ 12dB
+ 16dB
+ 20dB
-20dB
TARGET CURVE - BRITISH BROADCASTING COMPANY
The A2 pre-programmed playback mode creates a sound characteristic very similar to the
preference of British Broadcast Company (BBC) in the higher frequency ranges and re-creates
a modest bass boost that improves the typical performance of most high-fidelity loudspeakers.
A2 may not be recommended for large loudspeakers capable of generating large
energy levels in the lowest octaves. A2 may not be recommended for very small
loudspeakers incapable of reproducing the lowest octaves with realistic energy
level (unless the loudspeakers limitations in regard to maximum sound pressure
level is fully respected).