JBL rmc User Manual
Method Two
Many engineers are quite happy with the response of their existing stereo or surround
loudspeakers. They may only want to add a subwoofer to their system for more extended
bass. In this case, the hookup shown in Figure 18 should be used. You can get a sub-
woofer feed by sending a parallel or “multed” feed of the LCR front channels - or by using
the Direct In to the subwoofer if your signal source has a SUB or 0.1 (point-one) output.
Many engineers are quite happy with the response of their existing stereo or surround
loudspeakers. They may only want to add a subwoofer to their system for more extended
bass. In this case, the hookup shown in Figure 18 should be used. You can get a sub-
woofer feed by sending a parallel or “multed” feed of the LCR front channels - or by using
the Direct In to the subwoofer if your signal source has a SUB or 0.1 (point-one) output.
Measurements, Analysis and Adjustments - The next step is to play Tracks 4 through 26
for correcting the major room mode, and then to make final adjustments to your taste.
for correcting the major room mode, and then to make final adjustments to your taste.
Note: When using full-range satellites not high-passed using the LSR6312SP bass man-
agement system, it is recommended a low-pass filter be applied to the feed to the sub-
woofer so the sub does not produce the same bass frequency as the satellite speakers,
which could possibly cause bass cancellation. JBL Professional recommends Method One
which will generally produce the best results except in special cases.
agement system, it is recommended a low-pass filter be applied to the feed to the sub-
woofer so the sub does not produce the same bass frequency as the satellite speakers,
which could possibly cause bass cancellation. JBL Professional recommends Method One
which will generally produce the best results except in special cases.
IV. LSR25P Systems With LSR6312SP Subwoofer
Setup procedures, measurements, analysis and adjustments for LSR25P systems with a
LSR6312SP Subwoofer is the same as the LSR6312SP with LSR6328P system. Refer to
this section on page 14. Figure 19 shows a wiring diagram of the LSR25P system.
LSR6312SP Subwoofer is the same as the LSR6312SP with LSR6328P system. Refer to
this section on page 14. Figure 19 shows a wiring diagram of the LSR25P system.
Note: Do not enable the high pass filter dip switch on the LSR25P system.
L in
R in
Source
out
out
Right
Left
in
in
amplifier
amplifier
Subwoofer
Figure 18
19
L out
Right
Left
L in
R in
Source
R out
out
out
Subwoofer
Figure 19