Controls And Indicators; Controls; Mains Power Switch [1]; Mute Switch (A/B) (Green Led) [2] - d&b audiotechnik D12 Hardware Manual

ISP GR OVL
A MUTE
LEVEL
PUSH MENU
[4] [3]
Fig. 4: D12 Controls and indicators
ON
OFF
POWER
[1]
Fig. 5: D12 Mains power switch
D12
ISP GR OVL ISP GR OVL
A MUTE B
LEVEL
PUSH MENU
[3] [2]
Fig. 6: D12 Controls
D12 Amplifier, Hardware manual

4. Controls and indicators

D12
ISP GR OVL
B
[2] [5][6][7]

4.1. Controls

4.1.1. Mains power switch [1]

The on/off rotary switch is located on the right hand side at the bottom
of the front panel.
- OFF: the D12 is isolated from the mains power supply except the
- ON: the D12 is switched on. Via remote or the MUTE A or B switch
The mains power rotary switch is a "Brake-before-make contacts" type.
Note:
Due to this characteristic the D12 will immediately be switched off by
leaving the "ON" position.

4.1.2. MUTE switch (A/B) (green LED) [2]

When the mains power switch is set to the on position, the MUTE switch
can be used to mute the respective amplifier channel or place the D12
in standby mode using the MUTE A or B switch. The switch incorporates
a green LED indicator which indicates three different states - ON
(unmute)/MUTE and STANDBY.
- LED on: ON (unmuted): the D12 is ready for use. A brief press
- LED regular flashing (1:1 duty cycle): ⇒ ⇒ ⇒ ⇒ MUTE:
The setting of the MUTE A/B switch is stored in the D12 when the mains
Note:
power is turned off or disconnected. After switching on or reconnecting
the D12 it will revert to its pre-disconnection status.
(4.7 EN)
overvoltage protection circuit. The power consumption is very low (2
W typical).
the D12 can be switched to standby mode. To indicate standby mode
the display remains active.
of the MUTE (A or B) switch will mute the corresponding channel A or
B. A longer press (approx. 1 sec.) of MUTE A or B places the D12 in
standby mode.
the corresponding channel of the D12 is muted however the power
amplifier remains powered but receives no signal from the controller.
A connected loudspeaker is therefore still damped.
The channel is unmuted by briefly pressing the corresponding MUTE
switch.
ON
OFF
POWER
[1]
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