A & E Specifications

Architect’s and Engineer’s Specifications
C Series: Dedicated Installation Amplifiers
WWW.LA BGRUPPE N.COM
Item no. AES-C10:8X - 02.12.2015
Overview: Channel Modes and Network
The power amplier shall provide eight discrete channels of
amplication. Rear-panel switches shall enable bridging of adjacent
channels to allow reconguration as a 4-, 5-, 6- or 7-channel ampli-
er. Each channel shall be capable of independently driving either
low-impedance or high-impedance (70 V/100 V) loads. The output
circuit topology shall be Class D. The amplier shall be equipped with
sensing and communication circuits to allow comprehensive remote
control and monitoring functions via a separate bridge and network
controller. The proprietary control and monitoring network shall em-
ploy TCP/IP protocols, use Cat-5 cable for interconnection, and allow
remote control from an external PC using proprietary software.
Power Output and Performance
Maximum total output of all eight channels shall be 1000 watts. In
discrete eight-channel mode, each amplier channel shall deliver
maximum continuous output power as follows: 125 watts into 16
ohms, 125 watts into 8 ohms; 125 watts into 4 ohms; 60 watts into
2 ohms; or 125 watts into a high impedance (70 Vrms / 100 V peak)
load. Maximum output voltage per channel shall be 71 Vrms; maxi-
mum output current per channel shall be 5.6 Arms. In bridged mode,
each bridged channel shall deliver maximum continuous output
power as follows: 250 watts into 16 ohms; 250 watts into 8 ohms;
125 watts into 4 ohms; or 250 watts into a high impedance (140 Vrms
/ 200 V peak) load.
Default amplier gain shall be 32 dB, with rear-panel adjustment
from 29 - 38 dB in 3 dB increments, selectable for each channel.
For bridged channels, the amplier shall automatically compensate
-6 dB gain internally to maintain consistent output to all channels at
selected gain.
The amplier shall exhibit the following performance parameters
with gain set at 32 dB and VPL (Voltage Peak Limiter) at 100 V:
Frequency response shall be 2.3 Hz to 56 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 - 20 kHz) shall be less than 0.1%; THD at 1 kHz shall be no more
than 0.05% at 1 dB below clipping.
A Voltage Peak Limiter shall limit peak output as determined by rear-
panel switches. In discrete eight-channel mode, peak voltage shall
be selectable in four steps across a range of 100 V to 32 V. In bridged
mode, peak voltage shall be selectable in four steps from 200 V to 64
V. The voltage limiter mode shall be selectable for either hard or soft
limiting characteristics.
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 Phoenix connectors. The output connectors shall be
2-pole barrier strip screw connectors. DIP-switches shall determine
the following: amplier gain (29 dB to 38 dB in 3 dB increments); fan
masked; and bridged mode selection for channel pairs. Additional
DIP-switches shall determine Voltage Peak Limiter values (select-
able per channel), Hard or Soft limiting characteristic, and insertion
of a 35 Hz high pass lter. Two RJ45 connectors shall be provided for
input and output of the control and monitoring network signals.
GPIO (General Purpose Input/Output) functions shall be provided on
two 2-pole Phoenix connectors and two DIP-switches. GPIO func-
tions shall include power on/off (toggled or same-state) and defeat
of on/off commands from the network.
The following indicators and controls shall be provided on the FRONT-
PANEL of the amplier. Eight level control potentiometers, one for
each channel, shall be provided beneath a front-panel security cover;
potentiometers shall be detented and provide attenuation from 0 dB
to innity in 21 steps. Two separate switches shall be provided for
power on/off and remote power on/off enabling. Front-panel LED
indicators shall display the status of power on/off, NomadLink
®
network connection, and Power Average Limiter (PAL™). Additional
LED indicators shall be provided for each channel: signal present and
high-impedance warning (SIG HI-IMP), Voltage Peak Limiter (VPL),
Current Peak Limiter (CPL), Very High Frequency (VHF), high tem-
perature warning and fault (TEMP), and MUTE.
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) with Power Factor Correction and
a PAL™ (Power Average Limiter) circuit to prevent excessive current
draw. A soft start circuit shall limit current inrush at power-up to
5 A. The amplier shall be cooled by two temperature-controlled,
variable-speed fans, with air ow from front-to-back. Adaptive fan
on/off function shall be dependent on presence of an output signal.
Physical
The amplier shall be 483 mm (19 in.) wide, 88 mm (3.5 in / 2 U)
high, and 343 mm (13.5 in.) deep. The weight shall be 8.5 kg (18.75
lbs). The chassis shall be black painted steel with a grey painted steel
front-panel.
The amplier shall be approved for use as specied by CE, ANSI/UL,
ETL and the FCC. The amplier shall be the Lab.gruppen C 10:8X.
C 10:8X