d&b audiotechnik D12 Hardware Manual

Also see for D12: Hardware manual Hardware manual Hardware manual Manual Software manual

d&b audiotechnik D12 Hardware Manual Manual pdf 12 page image

4. Controls and indicatorsD12LEVELPUSH MENUMUTEPOWERA BONOFFOVLGRISPOVLGRISP[1][3] [2][4] [5][6][7]Fig. 4: D12 Controls and indicators4.1. Controls4.1.1. Mains power switch [1]POWERONOFF[1]Fig. 5: D12 Mains power switchThe on/off rotary switch is located on the right hand side at the bottomof the front panel.- OFF: the D12 is isolated from the mains power supply except theovervoltage protection circuit. The power consumption is very low (2W typical).- ON: the D12 is switched on. Via remote or the MUTE A or B switchthe D12 can be switched to standby mode. To indicate standbymode the display remains active.Note: The mains power rotary switch is a "Brake-before-make contacts" type.Due to this characteristic the D12 will immediately be switched off byleaving the "ON" position.4.1.2. MUTE switch (A/B) (green LED) [2]D12LEVELPUSH MENUMUTEA BOVLGRISPOVLGRISP[3] [2]Fig. 6: D12 ControlsWhen the mains power switch is set to the on position, the MUTE switchcan be used to mute the respective amplifier channel or place the D12in standby mode using the MUTE A or B switch. The switch incorporatesa 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 pressof the MUTE (A or B) switch will mute the corresponding channel Aor B. A longer press (approx. 1 sec.) of MUTE A or B places the D12in standby mode.- LED regular flashing (1:1 duty cycle): ⇒⇒⇒⇒ MUTE:the corresponding channel of the D12 is muted however the poweramplifiers remains powered but receiving no signal from thecontroller. A connected loudspeaker is therefore still damped.The channel is unmuted by briefly pressing the corresponding MUTEswitch.Note: The setting of the MUTE A/B switch is stored in the D12 when the mainspower is turned off or disconnected. After switching on or reconnectingthe D12 it will revert to its pre-disconnection status.D12 Amplifier, Hardware manual (4.4 EN) Page 12 of 28