CT Active Speakers User Manual
Connection
Connect line level signal from sound source to the INPUT XLR, ensuring that the MIC/LINE switch is in the out position (LINE).
Alternatively, a microphone can be connected to the INPUT XLR and the MIC/LINE switch should be pressed in (MIC - note: not available on 170.266)
Connect the OUTPUT XLR to any further active speakers that are to be fed the same signal.
Connect the supplied mains cable from the IEC connector to a suitable mains outlet, ensuring correct voltage and adequate current capacity.
Operation
CT8A, CT10A, CT12A, CT15A (170.254, 170.157, 170.260, 170.263)
With VOLUME control turned fully down, switch on the power switch.
Ensure a signal is playing to the input and gradually increase the VOLUME control to the required output level.
BASS and TREBLE controls may be adjusted to the desired tonal response.
Bear in mind that the combined adjustment of these may affect the output level and VOLUME settings may need to be adjusted to compensate.
The red CLIP LED will illuminate if the output is reaching clip level.
If the red CLIP LED illuminates more than very briefly, reduce the volume until it illuminates only briefly on loud peaks in the sound.
Before powering down, turn the channel gain controls fully down to avoid loud noises when switching off.
CT15SA (170.266)
With VOLUME control turned fully down, switch on the power switch.
Ensure a signal is playing to the input and gradually increase the VOLUME control to the required output level.
Adjusting the HIGH CUT control varies the cutoff frequency of the high cut filter.
Lower settings allow only the lowest frequencies to be output and higher settings allow more low-mid frequencies to be introduced into the signal.
The INV switch reverses polarity when pressed in, which may help to avoid low frequency feedback or phase align 2 subs facing toward each other.
The correct setting for this switch is whichever produces the best output or lowest feedback and is subject to trial and error.
ACTIVE LED shows that a signal is present and LIMIT indicates that the internal clip limiter is operating.
If the LIMIT LED lights persistently, the VOLUME setting may need to be turned down.
Before powering down, turn the channel gain controls fully down to avoid loud noises when switching off.
