(NB: on PS10TD, this feature is provided only after serial number 361 and not at all on PS15TD MKII).
• Compensation of power compression effects on the system response curve..
The PS TDcontroller is designed to be inserted between the Audio source (console, preamplifier, etc.) and
the power amplifier.
PS15TD MK2: Compatibility with former PS15TD, LS1000 & PS15 cabinets
PS15TD MK2 with PS15 cabinet without Impedance Compensation Network (ICN)
Internal jumpers J1 & J6 in the TDMK2 provide total compatibility for a PS15 cabinet with or without ICN
(shipped with PS15 since sn 23853).
The PS15TDcontroller MK2 is factory set to be used with ICN. Using old PS15 cabinets with the TDMK2
without changing internal jumpers (see page 21) will result in a boost of 3dB at 1400Hz and a decrease in
sound quality: if the TDcontroller cannot be changed, a temporary solution would be to apply an inverse
EQ before the TDcontroller.
PS15TD MK2 with LS1000 cabinet
We strongly advise that you do NOT use LS1000 before serial number 560 with the PS15TD MK2. The
driver in early model LS1000s cannot withstand the amount of energy provided by the new electrical
cross-over.
LS1000 above serial number 560 are equipped with the new 18’’ NEXO driver and with these units it is
possible to use the TDcontroller MK2. Keep in mind that the cross-over is not tuned for the LS1000
architecture and sound quality will be not be as good as with the LS1200.
PS15 cabinet with ICN used with earlier PS15TD
As the non-equalized response of the PS15 cabinet is flattest with the ICN, the use of an old PS15TD
(with higher equalization) will result in a cut of 3dB at 1400Hz.
A modification can be made on early PS15TDs (contact your NEXO dealer). Disconnecting the ICN (near
the HF horn) is also possible (in that case your cabinet is identical to earlier models before sn 23853).
LS1200 used with former PS15TD
In this case, the LS1200 will be under driven. The crossover will not match the cabinet architecture. No
sound improvement (vs. LS1000) should be expected. A modification can be made to your old PS15TD
(contact your NEXO dealer), but it will be no longer compatible with the LS1000.
Front Panel
Most front panel functions and indicators are located inside 2 distinct windows: left-hand areas relate to
functions and indicators dedicated to the optional Sub-bass section, while right-hand window contains
indicators concerning servo control operation for the PS cabinets.
For more technical details about servo control operation and internal electronic processing, please refer to
section “TDcontroller REFERENCE GUIDE.” Page 23.
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