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Your Definitive Technology subwoofer has been designed to operate
at frequencies generally below 150 Hz. Because low-frequency infor-
mation in this range essentially is non-directional, your subwoofer can
be located anywhere in your listening room that is most convenient.
Also, the continuously variable low pass filter operates at a very fast
roll-off, ensuring great performance wherever you place your subwoofer.
There are, however, some general rules that you should bear in mind
when locating your subwoofer:
1. For maximum output the subwoofer should be placed in a corner or
against the wall.
2. Corner placement will increase the subwoofer’s efficiency, which in
turn will increase your system’
s maximum output and improve the
dynamic capability of the subwoofer
.
3. While one Definitive Technology subwoofer will always sound great,
the use of two subwoofers will definitely enhance your system’
s
performance by providing a smoother and more consistent response
pattern. Here, it is recommended that you locate the subwoofers on
the same side of the room as the main speaker of the same channel
(if you are feeding them discrete left and right channel signals).
4. When using the Pr
oSub with Definitive ProMonitors, consult the
P
r
oMonitor instruction manual for other placement tips.
Subwoofer Placement
4
Low Level LFE Connections
Most new model receivers, preamps and decoders feature a mono
(line level) output intended to be used with subwoofers. This is the
simplest connection method to use. You can feed the mono or LFE
subwoofer output of your receiver or decoder to the LFE low level
input on the subwoofer and achieve full performance.
Usually, if your
receiver or decoder already has a built-in low pass crossover, you should
turn the low pass control on your ProSub to 150. Also, these subwoofer
outputs tend to have less gain than main line level outputs, thus the gain
control on your subwoofer may need to be adjusted accordingly for
proper balance. Use the LFE input on the subwoofer to hook the sub-
woofer up to the LFE (low frequency effects) output on Dolby Digital
AC-3
*
decoders, receivers, etc.
Wiring Diagrams