Filter
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Audio Adjustment <Network>
Filter adjustment <FTR> (Open state)
The following adjustments can be made during filter adjustments. Make the appropriate
adjustments for the reproduced frequency band and characteristics of the connected
speaker unit.
Filter frequency adjustment: Every 1/3 octave
Level adjustment: 0.5 dB/1 step
The cut-off frequencies of the high pass filter (H.P.F.) and the low pass filter (L.P.F.) of
each band (subwoofer, low, mid, high) and the reproduction level of each band are set up.
Range Cut-off frequency Cut-off frequency Level adjustment
of H.P.F. of L.P.F. range
Subwoofer-range 20 Hz to 100 Hz 40 Hz to 250 Hz –24 dB to +10 dB
Low-range 25 Hz to 250 Hz 250 Hz to 10 kHz –24 dB to 0 dB
Mid-range 160 Hz to 10 kHz 2 kHz to 20 kHz –24 dB to 0 dB
High-range 1.6 kHz to 20 kHz 8 kHz to 20 kHz –24 dB to 0 dB
Slope adjustment: PASS, –6, –12, –18, –24, –36, –48, –72 dB/oct.
(Every –6 dB/oct. steps)
The slope (inclination of attenuation of filter characteristics) of H.P.F. and L.P.F. is set up.
Note:
• When the slope is set as PASS, the audio signals bypass the filter circuit, cutting out the effect of
the filter circuit.
• In order to protect the speaker unit, H.P.F. has no PASS set up for high ranges.
20 100 1k
0
10k
Frequency (Hz)
Cut-off frequency of the L.P.F.
Cut-off frequency of the H.P.F.
Level adjustment
Reproduced frequency band: the signals for frequencies
during += is reproduced.
Slope adjustment
Level (dB)
ENG/MASTER 96
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