Lab.gruppen LUCIA 240/2M - Manual (Page 6)

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Front panel
The front panel presents the following amplifier status indicators:
1 Standby/On LED indicator – A three-color LED illuminates
amber when amplifier is in standby power mode and illuminates
green when the amplifier is on. When Protection mode is invoked,
the LED starts flashing red, and the speaker outputs are muted.
For more information on Protection mode, please refer to the full
Operation Manual.
2 Signal present/limit/clip indicators – A three-color LED
illuminates to provide channel status information as follows:
Green - Signal is present at the input and the channel is
operating normally.
Amber – Limiting is active on the channel. Limiting is engaged when:
• The channel reaches the voltage limit as determined by the
automatic Voltage Peak Limiter (VPL) setting
• Maximum current output is reached
• Mains voltage cannot maintain rail voltage
Red – Channel is clipping either at the input or in DSP.
3 Signal attenuators – A signal attenuator is provided for input
channels 1 and 2. Attenuators are adjustable over a range of – infinity
to 0 dB.
4 Airflow input – Make certain this input is not blocked or covered.
1 2 3 4
Rear panel
The following features are located on the rear panel of all LUCIA
amplifiers:
1 Balanced audio inputs (1 & 2) – Connect balanced inputs using
3-pole Euroblock connectors. Correct polarity (+, -) and ground
terminations are shown on the rear panel.
2 Unbalanced audio inputs (1 & 2) - Connect unbalanced inputs
(e.g. local video screen output, CD player) to the RCA (phono) inputs.
Note: Balanced and unbalanced inputs are in parallel; only one pair
of inputs should be connected at one time.
3 Speaker outputs - Connect loudspeakers with nominal
impedance of 2, 4, 8 or 16 ohms. Maximum connector current rating
is 41 Arms (exceeding capacity of the amplifier). Cables up to 4 mm 2
(12 AWG) can be accommodated. Observe polarity to avoid low
frequency cancellation loss.
Note: Bridge mode connection is not supported.
4 GPIO/Remote connector - Connect external control and status
monitoring devices using the six-pole Euroblock connector. See
“GPIO Configuration” in Set-up and Operation section following.
5 USB port – Connects to external computer for downloading DSP
presets. See “DSP/Matrix Configuration” in Set-up and Operation
following. Connection requires cable with a Mini B type connector
(included).
6 UTIL (Utility) switch – Recessed switch places unit in update
mode for firmware updates. The switch must be pushed in and held
down while the USB connector is being inserted to activate update
mode. Refer to the full Operation Manual for more information.
7 AC line input – Connect the included IEC power cable.
The following features are located on the rear panel of
LUCIA 120/2M and 240/2M only:
8. Balanced audio inputs (3 & 4) – Connect balanced inputs using
3-pole Euroblock connectors. Correct polarity (+, -) and ground
terminations are shown on the rear panel.
9. Matrix line outputs – Connect balanced line output cable using
3-pole Euroblock connectors Correct polarity (+, -) and ground
terminations are shown on the rear panel.
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