Lab.gruppen LUCIA 240/2M - Manual (Page 10)

12. Rear panel
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LUCIA Operation Manual rev 1.0.0
12. Rear panel
The following features (1-7) 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. Observe polarity to avoid low frequency cancellation
loss, especially if mixing to mono in in the matrix.
2 Unbalanced audio inputs (1 & 2) – Connect unbalanced inputs (e.g. local video screen output, CD player) to
the RCA (cinch/phono) inputs. Balanced and unbalanced inputs feed an internal analog mixer with optimized gain
settings to ensure that full level can be reached no matter which input is used. A balanced and an unbalanced
input can be connected simultaneously and “the choice of input” is determined by which device
is currently playing.
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 mm2 (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 Section 13.2.
5 USB port – Connects to external computer for downloading DSP presets. See “Programming a LUCIA Device”
in Section 14.7. Connection requires cable with a Mini B type connector (included).
6 UTIL (Utility) switch – Recessed switch places unit in update mode for firmware updates. Insert the USB
connector and then push and hold the switch to activate update mode. A red light on the back plate will indicate
that the unit is in update mode.
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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8 3
5 7 4
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6 2