JBL rmc User Manual
Analyze Your Measurements
Because of the extended LF response of the LSR6312SP system and its normal location at
the intersection of floor and wall, you may see a variety of response conditions, such as
the ones shown in Figures 15 and 16.
the intersection of floor and wall, you may see a variety of response conditions, such as
the ones shown in Figures 15 and 16.
0dB
-1 dB
-2dB
-3dB
-4dB
-5dB
-6dB
-7dB
-8dB
-9dB
-3dB
-4dB
-5dB
-6dB
-7dB
-8dB
-9dB
-10dB
-11dB
-12dB
-11dB
-12dB
-14dB
-16dB
20Hz
22
24 25 26
28
31
35
41
45 47
50 53
57
62
68
76
85
90 95
105
115
126
Frequency
Hz
Level
dB
Width
%
0dB
-1 dB
-2dB
-3dB
-4dB
-5dB
-6dB
-7dB
-8dB
-9dB
-3dB
-4dB
-5dB
-6dB
-7dB
-8dB
-9dB
-10dB
-11dB
-12dB
-11dB
-12dB
-14dB
-16dB
20Hz
22
24 25 26
28
31
35
41
45 47
50 53
57
62
68
76
85
90 95
105
115
126
Frequency
Hz
Level
dB
Width
%
Figure 15
Figure 16
Two Pronounced Peaks
Sharp Dip Adjacent to a Peak
Two pronounced peaks: Figure 15 shows response with a large peak at about 31 Hz and a
lesser one at 47 Hz. The first recommendation is that, if the sub is in a corner, move it
away from that position along the front wall. The 31 Hz peak will probably diminish signifi-
cantly as you do this. The 47 Hz peak is then the one you should equalize, since it is clear-
ly in the range where it can affect your judgement of program content and balances.
lesser one at 47 Hz. The first recommendation is that, if the sub is in a corner, move it
away from that position along the front wall. The 31 Hz peak will probably diminish signifi-
cantly as you do this. The 47 Hz peak is then the one you should equalize, since it is clear-
ly in the range where it can affect your judgement of program content and balances.
If the 31 Hz peak does not diminish when you move the sub, you should reduce the overall
sub level, bringing the 47 Hz peak down about 5 dB. You can then proceed to equalize the
31 Hz peak with RMC.
sub level, bringing the 47 Hz peak down about 5 dB. You can then proceed to equalize the
31 Hz peak with RMC.
16