Indicators; Cleaning - Ecler MPA4-80 Bedienungsanleitung

4.3. Indicators

The "SP" signal presence indicators (2, 5, 8, 11 on the MPA4-80 and 2, 5, 8, 11, 14, 17 on the
MPA6-80) light up when the input signal reaches approximately -40dBV.
The "CLIP" indicators (3, 6, 9, 12 on the MPA4-80 and 3, 6, 9, 12, 15, 18 on the MPA6-80)
light up when the output signal for the speakers is -1.5 dB below the actual clipping threshold. This
clipping system watches for eventual supply voltage variations, thus giving always an accurate
clipping indication, regardless of mains voltage deviations. It is normal that when operating at high
output power, the CLIP indicators light up in synchronisation with the low frequencies, which carry
the most energy. Nevertheless, you should avoid that the CLIP indicators are lit continuously

5. CLEANING

The control panel must not be cleaned with any dissolvent, abrasive or petroleum derivate
substance else paint and silk printing could be damaged.
Whenever cleaning should be necessary use a soft cloth slightly wet with water and
neutral liquid soap or with a solution of water and alcohol at 50%. Be careful that no liquid gets into
the mixer. Never use sharp or erosive objects to scratch the control panel.
Should any liquid get into the amplifier, do not use any cleaning sprays; send the unit to
the nearest ECLER Technical Service.
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