JBL rmc User Manual
Analyze Your Measurements
Most of your measurements for LSR6328P systems will fall within one of the six examples
which follow. Here are detailed descriptions of each example:
which follow. Here are detailed descriptions of each example:
Example A:
Absence of a floor interference dip indicates the loudspeaker was probably mounted
against a wall in a well-damped room, and not too far away from the monitoring position.
You may proceed to equalize the LF room mode for flat response.
Absence of a floor interference dip indicates the loudspeaker was probably mounted
against a wall in a well-damped room, and not too far away from the monitoring position.
You may proceed to equalize the LF room mode for flat response.
Example B:
There are no room mode effects here, but there is a dip due to floor or possibly wall
reflections. If the dip is no greater than about 4 or 5 dB, you can ignore it - and let this
response remain as is. If the dip is greater than about 6 dB, you might try moving your lis-
tening position forward just a bit. This may alleviate the dip somewhat. Otherwise, no
equalization is required
There are no room mode effects here, but there is a dip due to floor or possibly wall
reflections. If the dip is no greater than about 4 or 5 dB, you can ignore it - and let this
response remain as is. If the dip is greater than about 6 dB, you might try moving your lis-
tening position forward just a bit. This may alleviate the dip somewhat. Otherwise, no
equalization is required
Example C:
This is a very common pattern you will see in fairly live small to moderate size spaces.
The dip may result from both floor and wall reflections and as such may be fairly wide. Try
moving the monitor and/or your listening position to minimize the dip's width before pro-
ceeding. Equalize the peak.
This is a very common pattern you will see in fairly live small to moderate size spaces.
The dip may result from both floor and wall reflections and as such may be fairly wide. Try
moving the monitor and/or your listening position to minimize the dip's width before pro-
ceeding. Equalize the peak.
0dB
-1 dB
-2dB
-3dB
-4dB
-5dB
-6dB
-7dB
-8dB
-9dB
-3dB
-4dB
-5dB
-6dB
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-8dB
-9dB
-10dB
-11dB
-12dB
-11dB
-12dB
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-16dB
20Hz
22
24 25 26
28
31
35
41
45 47
50 53
57
62
68
76
85
90 95
105
115
126
One Low Frequency Peak
10
0dB
-1 dB
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-6dB
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-8dB
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-10dB
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-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
One Dip
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
One Peak and Dip Exceeding 6 dB