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7. CONNECTING FOR DOLBY DIGITAL
1. Connect the left, center, right, left surround and right surround outputs of your mixer to the left, center, right,
left surround and right surround input channels of the LFE-4.
2. Connect the outputs of LFE-4 to the inputs of your power amplifiers or directly to your powered
loudspeakers.
3. Connect the mixer output assigned to the low frequency effects channel (LFE) to the +10dB input of
the LFE-4.
4. Connect one of the subwoofer outputs of the LFE-4 to the XLR input of your subwoofer. Set your M&K
Professional subwoofer as follows: set the filter switch to THX, set the phase switch to plus and set the gain
switch to the THX position.
5. If you are using passive speakers with external amplifiers, connect your speaker system to the
power amplifiers.
6. Locate the external power supply for the LFE-4 and plug it into the 4 pin power connector on the back of
the LFE-4. Secure it in place by turning the outer ring clockwise. Plug the external power supply into a
power outlet. The front panel LED will glow red when power is applied.
Bass Management Controller
9
RIGHT SUR
IN
RIGHT SUR
OUT
LEFT SUR
IN
LEFT SUR
OUT
RIGHT
IN
RIGHT
OUT
CENTER
IN
CENTER
OUT
LEFT
IN
LEFT
OUT
LFE IN
+0 dB
LFE IN
+10 dB
SUB OUT
1
SUB OUT
2
24 VAC
IN
CHASSIS
GND
SIGNAL
GND
Surround monitors
3-channel power amplifier
M&K powered subwoofer
Main monitors
2-channel power amplifier
FIGURE 5: DOLBY DIGITAL 5.1 CONNECTIONS