User Manual
Multichannel Monitoring Tutorial Booklet (M2TB) rev. 3.5.2
Masataka Nakahara : SONA Corporation
©2005 YAMAHA Corporation, ©2005 SONA Corporation
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[Fig. 38] LFE vs. C; with Bass Management
[Fig. 39] and [Fig. 40] are examples showing the difference in values when the “center channel playback
level” is subtracted from the “LFE playback level.” [4] [Fig. 39] shows examples of ten different studios
without bass management controllers, while [Fig. 40] shows examples of eleven different studios with
bass management controllers. Since both groups are adjusted as DVD-Video playback environments, it is
necessary that the low-frequency range show a +10 dB difference in values.
It can be seen that the studios not using a bass management controller exhibit a greater disparity ([Fig.
39]) than studios that are using a bass management controller.
[Fig. 39] LFE vs. C, 10 studios ; without Bass Management
[Fig. 40] LFE vs. C, 11 studios ; with Bass Management
0
5
10
15
16
20
25
31.5
40
50
63
80
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125
160
1/3oct. band frequency [Hz]
SPL [dB]
0
5
10
15
16
20
25
31.5
40
50
63
80
100
125
160
1/3oct. band frequency [Hz]
SPL [dB]
10dB
55
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65
70
75
80
85
16
20
25
31.5
40
50
63
80
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125
160
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315
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630
800
1K
1.25k
1.6k
2k
2.5k
3.15k
4k
5k
6.3k
8k
10k
12.5k
16k
20k
1/3oct. band frequency [Hz]
SPL [dB]
LFE
C