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The CT8 XO Mk2 Crossover/Equaliser
The CT8 XO is designed for 19-in rack mounting. If housed in an enclosed
structure, proper ventilation must be supplied as stated in the in the safety
instructions.
The CT8 XO is connected between the surround processor and the power
amplifiers. The CT8 XO signal input and output connections are made
through balanced XLR connectors.
The wiring convention for XLR connectors is:
Pin 1: Ground
Pin 2: Live (+)
Pin 3: Return (-)
CT8 XO MK2 Rear Panel
Figure 18
Processor
Front left
Rear left
Centre channel
If 12V trigger switching of the dispersion mode (monopole/dipole) of the
CT8 DS surround speakers is required, the assigned 12V trigger output
from the surround processor is connected to the 12V TRIGGER IN of one
of the CT8 XO units assigned to a CT8 DS. The other CT8 XO trigger
inputs are connected daisy chain fashion from the TRIGGER LOOP
socket of one to the TRIGGER IN of the next. The TRIGGER OUT sockets
are connected to the relevant CT8 DS speakers. The TRIGGER IN and
TRIGGER LOOP sockets are mono 3.5mm jacks with the positive (12V)
wire connected to the tip of the plug, whereas the TRIGGER OUT socket
is a stereo 3.5mm jack on both the CT8 XO and CT8 DS loudspeaker.
Figure 18 shows the wiring diagram of a typical 5.1 CT800 system having
two CT8 SW speakers, one assigned to each of the front left and right
channels.
Front right
To MF/HF of left CT8 LR
To LF of left CT8 LR
To left CT8 SW
Rear right
To MF/HF of left CT8 DS
To LF of left CT8 DS
To trigger of left CT8 DS
To MF/HF of CT8 CC
To LF of CT8 CC
To MF/HF of right CT8 LR
To LF of right CT8 LR
To right CT8 SW
To MF/HF of right CT8 DS
To LF of right CT8 DS
To trigger of right CT8 DS
15
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