Gain Control - Master audio KEY12A Manual Usuario

Master Audio
Control Panel
A) LCD: Displays basic information about the DSP Status. The main screen shows the
following information.
For FULL-RANGE Systems
• Current preset
• Input Level
• Output Level LF Channel
• Output Level HF Channel
• Amplifier temperature
• ECO mode enabled/disabled
• Keypad locked/unlocked
For SUBWOOFER Systems
• Current Preset
• Input Level
• Output Level
• Amplifier temperature
• ECO mode enabled/disabled
• Polarity Positive (+) / Negative (-)
• Keypad locked/unlocked
B) KEYPAD: Allows the user to perform basic operations on the DSP such as Preset
selection, delay adjust and also user preferences. To enter the menu the keypad must
be unlocked by pressing simultaneously the MENU and SELECT keys.
C) GAIN CONTROL: Use the Up and Down arrows to adjust the gain of the system.
The gain can be adjusted between 0 and -20dB. Once -20dB is reached and the Down
key is further pressed, the system will be muted. To unmute it, press the Up key again.
D) PROTECTION LED: This led lights up when the amplifier is in a protection situation
(such as temperature excess, overcurrent, or other situations that can compromise the
amplifier's integrity).
It will also light up when the amplifier is in standby mode. This happens for a couple of
seconds at startup.
The Protection led will light off when the amplifier recovers from the abnormal
situation. Shall the Protection led keep up lighted on even after a system restart,
please contact an authorized service.
E) LIMITER LED: The limiter led lights up to indicate that the amplifier is delivering the
maximum power set by the limiter circuit. In two-way bi-amplified systems, this LED
will light when either of the amplifiers is limiting. The limiter prevents the loudspeaker
from receiving excessive or distorted signal. Continuous lightning of this led indicates
that the signal is being massively compressed. In this case, the input level should be
reduced in order to get a proper dynamic headroom.
F) MODEL DATA: The basic data of the model is found here:
- Model reference
- Amplifier rated power (Watts)
- Maximum Sound Pressure Level delivered by the system (dB SPL)
KEY Series (Active). Version 1.0 Feb14 7