Use & Maintenance - Nexo PS Série Manuel D'utilisation

___________________________________________________________________________________________________
Use & Maintenance
Checking the PS10 & PS15 internal fuses
The following paragraph concerns only the PS10 and PS15 cabinets, since the PS8 is fitted with a re-
settable fuse that does not require maintenance.
The function of these fuses is to protect the passive crossover against overheating if a speaker
component is accidentally disconnected or fails open circuit. They can also protect amplifiers from current
overloading in such an event. To preserve sound quality the fuses are not inserted in series with the
loudspeaker components themselves and thus do not protect them directly. If a loudspeaker component
is accidentally disconnected or fails open circuit and needs repairing, the fuses must be checked. Their
status can be verified visually and they are easy to replace.
Caution: a broken fuse will degrade sound quality and endanger the loudspeaker components but the
cabinet will still operate. The order of the passive filter will be reduced; this will lead to an improper phase
matching of the two drivers, and in the case of the HF driver to potentially dangerous excursion. It may
not immediately be noticeable. Incidents that can cause fuse breakage require the cabinet to be opened;
it is good practice to always check the fuses in such cases.
PS15: These fuses are of the common "automotive" type (ATO Blade type) with standard values (5A &
10A) on the passive crossover and 5x20 temporized fuse (T500mAL250V) on the ICN circuit.
PS10: These fuses are of the common "automotive" type (ATO Blade type) with standard values (3A &
10A)
The fuses are located as follows:
PS10 & PS15 On the PCB of the internal passive crossover located behind the connector panel. Release
the 4 or 6 screws holding the connector panel (Allen metric 2.5 or TORX20) and disengage the panel &
crossover assembly (an upward rotation movement is required).
PS SERIES MANUAL REV3 10/10/05
LOUDSPEAKERS
P.13