Neumann.Berlin KH 420, Руководство по эксплуатации

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KH 420 |
19
The following settings can be used as a starting point for further adjustment:
Loudspeaker position ACOUSTICAL CONTROLS
switches
C
PARAMETRIC
EQUALIZER controls
F
Bass Mid Treble Gain Freq. Q
In a corner −7.5 dB – –
-
3 200 4
Next to or flush mounted into
an acoustically solid wall (e.g.
brick, concrete)
−5.0 dB – – – – –
Next to or flush mounted into
an acoustically soft wall (e.g.
gypsum)
−2.5 dB – – – – –
Free standing in an untreated
room
−2.5 dB −1.5 dB −1 dB – – –
Free standing in a well-treated
room
– – – – – –
In a small room with strong
side wall reflections
−5.0 dB – – – – –
Near a small desktop or small
reflecting surface*
– −1.5 dB –
-
2 250 4
Near a large desktop or large
reflecting surface*
– −3.0 dB – - 3 160 4
* Use these settings in addition to one of the top settings
It is recommended to use a properly setup acoustic measurement system when setting
the acoustical controls. This is particularly true when setting the parametric equalizer.
Adjusting the acoustical level
X
On your KH 420 loudspeakers, set the OUTPUT LEVEL switch
A
to the lowest possible value
of 94 dB SPL and the INPUT GAIN control
B
to −15 dB.
X
Play a broadband pink noise test signal that is set to −18 dBFS (Europe) or −20 dBFS (USA)
on the mixing console‘s output level meters.
X
Measure the sound pressure level at the listening position using a sound level meter with
the following settings:
• “C”-weighted
• slow integration time
X
Set the OUTPUT LEVEL switch
A
and the INPUT GAIN control
B
of your loudspeakers so
that the desired acoustic level is obtained.
Recommended sound pressure levels:
Application Sound pressure level
Film 85 dB(C)
Broadcast 79 to 83 dB(C)
Music No defined reference levels
If the Neumann logo flashes red, the loudspeaker‘s protection system has been activated.
To avoid this and achieve the desired output level, use larger loudspeakers or add a bass
managed subwoofer to the system.
EN