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8. Equalisation and Positioning
VSX Series subwoofers require no equalisation or correction to overcome system limitations. As a result, they will
only need equalisation to compensate for difficult acoustic environments. Excess equalisation can reduce system
headroom, and introduce phase distortion resulting in greater problems than it cures. If equalisation is required then
it should be applied gently and smoothly. Violent equalisation will be detrimental to the overall sound quality.
In the frequency band over which subwoofers operate, behaviour is essentially omnidirectional. Therefore, the
efficiency of a VSX Series subwoofer may be further enhanced if the unit is placed against a wall, as radiation in the
forward plane will be doubled (due to the addition of the reflected rear directed energy) and a 6 dB increase in sound
pressure will be realised. If placed in a corner, once again the sound pressure level will increase by a further 6 dB.
9. Active Crossover Settings
Recommended filter settings for all VSX Series subwoofers are included in the Tannoy TDX 1 System Controller. When
using an OEM active crossover or digital system controller, the following settings are recommended for low pass and
high pass filters.
VSX 10BP
LPF
HPF
110 Hz
93.1 Hz
VX 5.2
24 dB Butterworth
24 dB Butterworth
4.6 ms
0 ms
110 Hz
100 Hz
VX 6
24 dB Butterworth
24 dB Butterworth
3.24 ms
0 ms
VX 8
N/A
N/A
VX 8.2
N/A
N/A
VX 12
N/A
N/A
VX
N/A
N/A
12HP
VX
N/A
N/A
12Q
VX
N/A
N/A
12.2Q
VX
N/A
N/A
15HP
VX
N/A
N/A
15Q
Notes:
Greyed boxes denote combinations which are not recommended due to imbalance between Subs and Full range speakers.
Settings indicated assume even acoustic levels on Sub and Full range speaker. In reality Subs tend to be operated above these levels, affecting the overall result.
Delays are set for optimal phase coherence when the Sub and Full range speaker have their pole mount lined up.
Settings assume that individual bands do not include any other filters (e.g. EQ) close to the crossover region.
VSX 8.2BP
LPF
HPF
LPF
109 Hz
109 Hz
24 dB Linwitz-R
24 dB Linwitz-R.
0 ms
2.01 ms
109 Hz
118 Hz
24 dB Linwitz-R
24 dB Linwitz-R.
0 ms
2.85 ms
109 Hz
114 Hz
24 dB Linwitz-R
24 dB Linwitz-R.
0 ms
0.8 ms
109 Hz
114 Hz
24 dB Linwitz-R
24 dB Linwitz-R.
0 ms
1.7 ms
109 Hz
110 Hz
104 Hz
24 dB Linwitz-R
24 dB Linwitz-R.
24 dB Linwitz-R
0 ms
1.9 ms
0 ms
108 Hz
N/A
N/A
24 dB Linwitz-R
0 ms
108 Hz
N/A
N/A
24 dB Linwitz-R
0 ms
108 Hz
N/A
N/A
24 dB Linwitz-R
0 ms
108 Hz
N/A
N/A
24 dB Linwitz-R
0 ms
108 Hz
N/A
N/A
24 dB Linwitz-R
0 ms
VSX 12.2BP
VSX 15DR
HPF
LPF
121 Hz
N/A
N/A
24 dB Linwitz-R
0 ms
123 Hz
N/A
N/A
24 dB Linwitz-R
0 ms
118 Hz
N/A
N/A
24 dB Linwitz-R
0.3 ms
118 Hz
N/A
N/A
24 dB Linwitz-R
0.89 ms
91.4 Hz
115 Hz
24 dB Linwitz-R
24 dB Linwitz-R
1.7 ms
0.6 ms
91.4 Hz
24 dB Linwitz-R
N/A
1.7 ms
91.4 Hz
24 dB Linwitz-R
N/A
1.7 ms
91.4 Hz
24 dB Linwitz-R
N/A
0.76 ms
91.4 Hz
24 dB Linwitz-R
N/A
1.27 ms
91.4 Hz
24 dB Linwitz-R
N/A
1.27 ms
VSX Subwoofer Operation Manual rev 1.0.1
8. Equalisation and Positioning
VSX 18DR
HPF
LPF
HPF
108 Hz
24 dB Linwitz-R
N/A
0 ms
116 Hz
24 dB Linwitz-R
N/A
0 ms
110 Hz
24 dB Linwitz-R
N/A
0.8 ms
108 Hz
24 dB Linwitz-R
N/A
0.8 ms
106 Hz
115 Hz
106 Hz
24 dB Linwitz-R
24 dB Linwitz-R
24 dB Linwitz-R
0.8 ms
0.35 ms
0.8 ms
115 Hz
106 Hz
N/A
24 dB Linwitz-R
24 dB Linwitz-R
0.16 ms
0.8 ms
115 Hz
106 Hz
N/A
24 dB Linwitz-R
24 dB Linwitz-R
0.16 ms
0.8 ms
115 Hz
102 Hz
N/A
24 dB Linwitz-R
24 dB Linwitz-R
1.04 ms
115 Hz
106 Hz
N/A
24 dB Linwitz-R
24 dB Linwitz-R
0.68 ms
115 Hz
106 Hz
N/A
24 dB Linwitz-R
24 dB Linwitz-R
0.68 ms
N/A
N/A
N/A
N/A
0 ms
0 ms
0 ms
7
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