Setup And Settings; Introduction; The Main Screen - Martin Audio MA12K - 2007 User Manual

2

Setup and settings

2.1

Introduction

The figure below shows the front panel of 9.6K, 12K & 18K Series. The front panel controls, in conjuction
with the graphic LCD display above the buttons, give to the user the total control and detailed information
about the status of the amplifier. Each pushbutton has multiple functions and the display shows the current
active function for each button. Read carefully the instructions below that help you to manage the functions
of the amplifier.
2.2

The main screen

The illustration below shows the main screen; this screen appears after a short presentation when the user
powers on the amplifier. In the first line, after power on, "WAIT" appears; if the system parameters are
normal, this is replaced with "READY". During the normal operation the controller monitors the system
parameters.
If a paramenter is out of range, the correspondent code error appears on the LCD meter of the relative
channel in the third line; if the abnormal parameter is associated to both channel, the error code appears in
the center.
The LED bars can function as output voltage or output current meters; in the first case the LCD meters
function as output current meter, vice versa in the second case. The first green LED at the bottom side of the
LED bar indicates, when lighted, the presence of input audio signal above -60 dBV on the corresponding
channel.
From the second green LED to the yellow one, each LED represents 3dB. The green LEDs will be lit during
normal working. The yellow LED will lit at -2 dB. If the level of the audio signal reach the channel output
capability, a red LED will be triggered.
The LED bars have diagnostic function also; a flashing yellow LED indicates a critic range of temperature
(from 80°C to 85°C) of the power devices on the corresponding channel, if this LED is lit continuously, the
temperature is above 85°C. A continuously lit red LED indicates that the corresponding channel is in
protection.
All material © 2007. Martin Audio Ltd. Subject to change without notice.