A & E Specifications

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Item no. AES-LUCIA1202 - 02.12.2015
Overview
The power amplifier shall be Energy Star compliant, and shall be
housed in a 1U high, half rack-space wide (216 mm) enclosure. It
shall provide two discrete channels of amplification, with each
channel capable of driving load impedances of 2 ohms to 16 ohms.
The output circuit shall be an inherently bridged Class D topology.
Maximum total output with both channels driven shall be 120 W.
Power Output and Performance
Power output per channel, both channels driven, shall be as follows:
60 W into 2, 4 or 8 ohms; 30 W into 16 ohms. Peak voltage output
per channel shall be 31.0 Vpk. Maximum current output per channel
shall be 5.5 Arms. An auto-setting voltage peak limiter (VPL) shall
adjust output characteristics for optimum performance with the
connected load. The VPL setting shall be 31 V for 8 and 16 ohm
loads; 22 V for 4 ohm loads; and 15 V for 2 ohm loads. Sensitivity
shall be 8 dBu (1.95 Vrms) on the balanced inputs and 2 dBu
(0.98 Vrms) on the unbalanced RCA inputs. Input headroom for
clip shall be 12 dBu (3.09 Vrms) for the balanced inputs and 6 dBu
(1.55 Vrms) for the unbalanced inputs. The amplifier shall exhibit the
following performance parameters: Frequency response shall be 5 Hz
to 22 kHz (+0/-3 dB at 1 watt into an 8 ohm load); channel separation
shall be greater than 60 dB; and signal-to-noise ratio shall be greater
than 92 dBA. THD at 1 watt (20 Hz - 20 kHz) in to 8 ohms shall be
less than 0.3%; THD at 1 kHz at 1 dB below clipping shall be no more
than 0.2%.
Digital Input Section
The amplifier shall incorporate a firmware-controlled digital input
section with the following capabilities. Each channel shall offer a
digital look-ahead limiter and multiband compressor.
Connectors, Controls and Indicators
The following connectors and controls shall be provided on the
REAR PANEL of the amplifier. The mains connector shall be an IEC
inlet. The input connectors shall be electronically balanced, 3-pin
detachable screw terminals and parallel unbalanced RCA connectors.
The output connectors shall be 2-pin detachable screw connectors.
GPIO (General Purpose Input/Output) functions shall be provided on
a 6-pin detachable screw terminal connector. A USB mini type B
connector shall be provided to facilitate firmware updates. A recessed
utility (UTIL) shall initiate firmware update mode. The following
connectors and controls shall be provided on the FRONT PANEL
of the amplifier. A signal attenuator shall be provided for both input
channels; attenuators shall be adjustable over a range of – infinity to
0 dB. A Standby/On LED indicator shall illuminate amber when the
amplifier is in standby mode and green when the amplifier is on.
Each output channel shall have a tri-color status LED with indication
as follows: green when channel is operating normally, amber when
limiting is active on the channel, and red when the channel is clipping
at either input or DSP.
Power Supply, Protection, and Cooling
The power supply shall be a universal type (AC line input between 100
and 240 VAC at 50 or 60 Hz). The amplifier shall turn on automatically
when power is connector to the unit; it shall go into standby mode
if no signal is present at either input for 20 minutes. The amplifier
shall turn on from standby mode in less than two seconds when
an input signal is present at either channel input. Standby power
consumption shall be less than 1 W. The amplifier shall be cooled by
an intelligent temperature controlled fan; the fan shall be off at lower
power levels with adequate ventilation.
Physical and Conformity
The amplifier shall 216 mm (8.5”) wide, 44 mm (1.75”, 1 U) high
and 280 mm (11”) deep. It shall weigh 1.9 kg (4.2 lbs). The chassis
shall be black steel and the front panel shall be black aluminum. The
amplifier shall be compliant with the following standards: Energy
Star, CE, CSA, CCC, PSE, and FCC.
The amplifier shall be a Lab.gruppen LUCIA 120/2.
LUCIA® 120/2
Architects’ and Engineers’ Specification
LUCIA: Localized Utility Compact Intelligent Amplification