A & E Specifications

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Item no. AES-E2:2 - 15.03.16
Overview: Certification and Channel Modes
The power amplier shall be Energy Star 3.0 certied. It shall provide
two discrete channels of amplication, with each channel capable of
independently driving either low-impedance or high-impedance (70 V)
loads. The output circuit shall be an inherently bridged Class D
topology. Maximum total output with both channels driven shall be
200 W.
Power Output and Performance
The power amplier shall offer two power output modes (Lo-Z and
70 V) selectable by a rear-panel switch. Power output per channel,
both channels driven, shall be as follows in Lo-Z mode: 100 W into
4 ohms, 100 W into 8 ohms and 50 W into 16 ohms. Power output
per channel, both channels driven, shall be as follows in 70 V mode:
100 W into 16 ohms and 100 W into a 70 V system. The amplier
shall incorporate a rail voltage sensing circuit to ensure low distortion.
Peak voltage output per channel shall be 100 V (70 V rms); maximum
output current per channel shall be 7.7 Arms. Power outputs higher
than stated prior shall be possible in one channel with asymmetrical
loading or with no load connected to the other channel. Gain shall be
35.2 dB in 70 V mode and 27.2 dB in Lo-Z mode. The amplier shall
exhibit the following performance parameters: Frequency response
shall be 2 Hz to 40 kHz (+0/-3 dB at 1 watt into an 8 ohm load);
channel separation shall be greater than 70 dB; and signal-to-noise
ratio shall be greater than 112 dBA. THD at 1 watt (20 Hz - 7 kHz)
shall be less than 0.1%; THD at 1 kHz shall be no more than 0.05% at
1 dB below clipping.
Connectors, Controls, and Indicators
The following connectors and controls shall be provided on the REAR
PANEL of the amplier. The input connectors shall be electronically
balanced, 3-pin detachable screw terminals. The output connectors
shall be 2-pin detachable screw connectors. GPIO (General Purpose
Input/Output) functions shall be provided on two 2-pole detachable
screw terminal connectors. Two detented potentiometers shall
provide level adjustment from -innity to 0 dB. A power switch shall
toggle between On and Standby power states. The following LED
indicators shall be provided on the FRONT PANEL of the amplier:
One bi-color power indicator (amber standby, green on); one
temperature indicator (ashing amber warning and steady amber
over-temperature/mute); two LED indicators per channel, one for
signal present and one for limiter active.
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 power supply shall offer three
modes for power on/standby/off. Default mode shall be auto-power
down (APD): the amplier shall go into standby mode when no signal
is present at the inputs for 20 minutes; power on mode shall resume
with restoration of input signal. Standby power consumption shall be
less than 1 W. Alternative power modes shall be manually switched
on/standby or external power sequencing via GPIO connections.
The amplier shall be cooled by a temperature-controlled, variable-
speed fans with air ow from front to rear.
Physical
The amplier shall be 483 mm (19 in.) wide, 44 mm (1.75 in / 1 U)
high, and 276 mm (10.9 in.) deep. The weight shall be no more than
4.2 kg (9.3 lbs). The chassis shall be black painted steel with a grey
painted aluminum front-panel. The amplier shall be approved for
use as specied by CE. The amplier shall be the Lab.gruppen E 2:2.
E 2:2
Architects’ and Engineers’ Specification
E Series: Installation-Focused Amplifiers