TDCONTROLLER USER GUIDE
___________________________________________________________________________________________________
P.22
If your are using this TDcontroller with a PS15 cabinet without an ICN, the ICN jumpers must be set to the
« A » position (left side). If not, a boost of 3dB at 1400Hz will result, affecting the sound quality of your
system.
Sub jumper
In certain applications you may wish to disable the mono summation (but keep the 6dB gain boost) on the
sub channel. By moving the J4 jumper to the left position (« A »), the sub channel will only use the Right
input (with 6dB gain to keep the same sub level when the mono summation is enabled)
Setting-Up Advice
Recommendations for wiring the Sense lines
The impedance of the sense inputs of the PS TDcontroller are quite high, so currents are low and
therefore ordinary light duty cable can be used. If the TDcontroller is housed in the amp racks an
unshielded cable can be used.
If the Controller is located remotely - at the mixing position - a shielded cable is recommended, without
using the shield as a conductor.
When one of the channels is not being used and the corresponding sense line is disconnected, cross talk
onto the inactive sense line may in some cases produce signals capable of causing the inadvertent
illumination of the Sense LED on that channel ; although this has no effect on the internal operation of the
Controller, it can be cured by short-circuiting the terminals of the inactive sense line.
In all cases, it is strongly advised to protect the amplifiers from short-circuits in the sense lines. It is
recommended that a 1 kOhm resistor with a power rating of at least three watts be inserted in series with
one of the sense line cables as close as possible to the output terminals of the amps.
Connecting the audio outputs
The output stages can drive several amplifiers in parallel ; however it is not advisable to work with loads of
less than 1 kOhm. It is best to check the impedance characteristics of the amplifier inputs - supplied by the
manufacturer - to check how many amplifier channels can be paralleled. Where precise information is not
available (and taking 10 kOhm as the minimum value possible), ten channels in parallel per output is a
sensible maximum.
To Next Page
Loading...
Need help?
General
