Revel B12 - Manual (Page 11)

11
REVEL Concerta B12
Owner’s Manual
dB
L
6
6 OFF
ON ROOM EQ
Octave
Hz 20 80
-14 0
.05 .53 BANDWIDTH
FREQUENCY
LEVEL
POWER
GREEN: ON
RED: STANDBY
44
22
33
63
-6
-13
-10
-1
.40
.18
.33
.49
P/N: 354223-001
Revel
Northridge, California, USA
6
Low Pass Frequency Control
(continued)
A lower frequency setting will con-
centrate the B12 subwoofer’s efforts
on the deep bass required by con-
temporary music and film sound-
tracks.
• Set to a higher setting, between
100Hz and 175Hz, for smaller
bookshelf loudspeakers that do not
extend to the lower bass frequen-
cies.
If the frequency control is set too high,
bass will sound “too boomy” and over-
power the overall sound. If it is set too
low, some low frequency sounds may
be difficult to hear, or absent altogeth-
er.
This control will have no effect if the
Low-Pass Filter Switch (No. 6 in Figure 5) is
set to OFF (Normal) because in that case
the receiver/processor will set the crossover
frequency. If using a DTS or Dolby Digital
receiver/processor, set this control to OFF
(Normal).
Note
This control does not limit the frequency
range of the main speakers in the system.
The objective of adjusting the Low Pass
Frequency control is to result in the repro-
duction of all frequencies, while minimiz-
ing any overlap. (It is undesirable for the
subwoofer and the main speakers to both
reproduce the same frequencies, as this
would result in very irregular response.
That is because there would be reinforce-
ment at some frequencies where they
happened to be in phase, and cancellation
at others where they are out of phase).
The numbers in Figure 5 (shown here) correspond with the
numbered items in the Rear Panel section that began on
page 10.
Figure 5: B12 Subwoofer (Rear View)