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The operating controls are located on the front panel except for the AC mains switch and the gain switch.
AC mains switch
The AC mains switch (10) is located on the rear panel and connects the 036 from the AC
supply when it is switched to ON.
When it is set to OFF the unit is completely disconnected and the LEDs on the front panel
remains dark.
Switching to ON activates the stand by mode and the Stand by LED (1) on the front panel
illuminates.
POWER button
The POWER button (2) on the front panel switches the 036 into operating mode or back
into stand by mode. In operating mode Stand by LED (1) and POWER LED (3) are
illuminated. In stand by mode only Stand by LED (1) lights up.
After switching to operating mode the protective circuits of the 036 takes a few seconds to
check all circuits of the power amp before enabling the speaker outputs.
Gain switch
The 036 has a gain of 35.5 (31dB), equals gain switch position 0. The gain can be set to a
lower level of 11.2 (21dB), equals gain switch position -6. The switch for the gain setting is
located inside the unit in the back part left of the rectangle stand by transformer and should
be switched by a qualified technician only.
CAUTION: Before opening the unit please disconnect the AC cord.
The protective circuits of the 036 operates outside the signal path. When the amp is on, these circuits constantly
check for errors with respect to temperature and DC offset.
Temperature
In the event that one of the channels of the power amp exceed their maximum allowable
temperature the overheat protection switches off the output relays and the POWER LED (3)
goes out. The unit is switched into stand by mode. As a precaution, we recommend turning
the volume down and waiting a while before turning back on the 036 by pressing the
POWER button (2). The 036 can only be switched back on after the temperature has fallen
below the allowable limit.
DC offset
If the DC voltage at the speaker outputs of the 036 exceeds the allowable limit, the speaker
relays will be switched off. When this happens we recommend lowering the volume level.
The 036 will re-enable the speaker outputs automatically as soon as the DC offset falls
within the allowable limit.
Overload
If the current, which is flowing through the power transistors of the 036, exceeds the
allowable limit, the speaker relays will be switched off. When this happens we recommend
lowering the volume level. The 036 will re-enable the speaker outputs automatically as soon
as the current falls within the allowable limit.
OPERATING CONTROLS
PROTECTIVE CIRCUITS
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