Turning the LSub channel on (On) (Overlap / Crossover for PS15)
For use with the PS8 & PS10 cabinets, pushing the LSub
button turns the Sub-bass channel On (Sub L + R output),
which feeds the amplifier(s) driving the LSub cabinet(s).
Signals below 120 Hz are then reassigned after Left + Right
summation to this output, while the main Left & Right
channels are high-pass filtered at the same frequency.
When not using Subs, this switch must be released for
proper operation of the PS cabinet. A red LED indicates that
the function is in operation (button pushed in).
In the case of the PS15 MKII TD controller, this button
modifies the high pass filtering. It does not affect the sub output, which will always be a filtered sub signal.
(This is therefore not a Sub on/off button although the older PS15TD operates as the PS8/PS10 units
described above). In the « Overlap » position, the PS15 is exploited to its maximum capability. This
position should be used if the system is being used without a LS1200. It can also be used with the
LS1200; In this case, there will be a boost in the crossover area. The « Cross over » position is generally
recommended when using the LS1200.
Adjusting the LSub level (Sub Level)
The potentiometer adjusts the level of the Sub-bass channel, a range
of 12 dB allows a variety of configurations and application conditions
to be accommodated. Icons show the 2 standard positions; 1 LSub
for 1 PS cabinet, and 1 LSub for 2 coupled PS cabinets. Center
position of the knob is calibrated for 1 LSub used with 2 distant PS.
Amplifier control (Sense & Pk)
The green Sense LED indicates signal presence at the sense input
of the concerned channel, allowing visual confirmation of the return connection of the Sense cables from
the amplifier output.
The red Peak LED indicates that the Peak limiter is acting, reducing excessive peak voltage or levels
capable of overloading the channel amplifier.
Protection indicator
• The yellow VLF LED indicates that temperature or displacement
protection for the LSub are engaged on the Sub-bass channel. On
the PS8TDcontroller only the displacement protection is monitored.
• On each side of the PS main system window, yellow LF and HF
LEDs indicate when protection has been activated (temperature or
displacement control) for either the LF or the HF driver respectively
on the Left or Right channel. On the PS8TDcontroller the LED
indicate the displacement and temperature protection of the bass
driver only.
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