PLM20000Q Specifications

Architects’ and Engineers’ Specification
PLM
™
Series: Powered Loudspeaker Management
™
PLM 20000Q
WWW.LA BGRUPPE N.COM
Item no. AES-PLM20000Q - 02.12.2015
Overview and Functions
The unit shall comprise a two-in/four-out digital loudspeaker drive
processor with power amplier outputs. Additional capabilities and
facilities shall include load verication and real-time performance
monitoring; low-latency, Ethernet-based audio networking; control
and monitoring of internal parameters from a remote computer;
and optional software integration of industry-standard acoustical
measurement tools. All control, monitoring and measurement
facilities shall be remotely accessible via a custom PC software
interface supplied with the unit.
Digital Loudspeaker Processing
The unit shall include two modules of comprehensive digital audio
processing congured specically for loudspeaker drive applications.
Facilities shall be included for raised cosine equalization, linear-phase
and classical crossovers, peak and rms limiters, and oating ground
isolation. The processor rmware, in conjunction with supplied PC
software, shall accommodate exible mixing and routing, including
software-driven linkage of processing modules in two or more
separate units enabling them to function as a single module with
extended capabilities.
Power Amplifier
Maximum total output of all four channels shall be 20,000 watts.
In discrete four-channel mode, each amplier channel shall deliver
maximum continuous power as follows: 1150 watts into 16 ohms;
2300 watts into 8 ohms; 4400 watts into 4 ohms; 5000 watts into
2.2 – 3.3 ohms; or 4800 watts into 2 ohms. Maximum peak output
per channel shall be 194 volts and maximum peak current per channel
shall be 67 amps. When adjacent channels are bridged, power output
per channel shall be 8800 watts into 8 ohms, 9600 watts into 4
ohms and 10000 watts into 4.4 to 6.6 ohms. The amplier shall
incorporate power factor correction (PFC) to maintain full output during
extended bursts. Amplier gain shall be adjustable in the DSP input
module across a range of 22 to 44 dB in 0.1 dB increments. The
unit shall exhibit the following performance parameters: Frequency
response shall be 20 Hz to 20 kHz (+/-0.05 dB) at 1 watt into 8 ohms.
Dynamic range with digital inputs (all supported sample rates) shall
be greater than 114 dBA. Propagation delay shall not exceed 1.68 ms
using analog inputs. The unit shall include a DSP-implemented zero
overshoot voltage peak limiter individually adjustable per channel for
maximum voltage between 17.8 and 194 V in 0.1 V increments.
Load Verification and Circuit Protection
The unit’s DSP and on-board rmware, in conjunction with supplied
PC control software and loudspeaker database, shall enable the unit
to verify that loudspeaker loads are connected as intended, and to
identify defective drivers or faulty wiring. The DSP and associated
software also shall allow real-time monitoring of critical performance
parameters for both the power amplier section and connected
loudspeakers. Circuits and sensors shall be provided for warning
and protection against VHF (Very High Frequencies), DC at output,
over-temperature, open load, excessive current, and voltage peak
clipping.
Connectors, Network, and User Interfaces
The rear panel shall provide inputs for analog signals on two
XLR-F connectors and for AES3 digital signals on one XLR-F connector,
with link outputs for all three inputs on adjacent XLR-M connectors.
In addition, two etherCON®- housed RJ45 Ethernet jacks shall be
provided for networked digital audio as well as monitoring and control
via remote PC. The unit shall be compatible with use as part of a
low-latency, self-conguring digital audio network that supports
sampling frequencies of 48 and 96 kHz. Output connectors on
the unit shall be either binding post or Neutrik® speakON®
(2 x NLT4 and 1 x NLT8). The front panel user interface shall
include a high-brightness 2.5-inch LCD panel, a moisture-resistant
silicone touch pad, and a rotary encoder. The user interface shall
be menu-driven, with screen displays and soft-keys accessing
functions of the digital loudspeaker processor and the power amplier.
Dedicated keys shall be provided for Mute Enable, Meter and
Menu functions. Multicolor LEDs shall indicate presence of any
warning or fault conditions. The unit shall be supplied with
a custom software program for comprehensive monitoring of
system status and operating parameters, as well as control of
DSP and amplier functions. The software program shall be
compatible with use on a Tablet PC, and shall offer
plug-in integration of proprietary audio and acoustical measurement
tools in the same user interface.
Power Supply, Protection, and Cooling
The power supply shall be a universal regulated switch mode type
operating at voltages from 70 V to 265 V at line frequencies of 45
Hz to 66 Hz. Under-voltage limiting shall enable continued operation
with line sags as low as 65 V. A soft start circuit shall limit current
inrush at power-up to 8 A. A power average limiter shall incorporate
a software-control breaker emulation to prevent tripping of mains
fuses. The amplier shall be cooled by three temperature-controlled,
variable-speed fans, with air ow from front to back
Physical
The unit shall be 483 mm (19 in.) wide, 88 mm (3.5 in / 2 U) high,
and 498 mm (19.6 in.) deep including handles and rear support.
The weight shall be 17 kg (37 lbs). The chassis housing shall be
black painted steel with a black painted steel and aluminum front
surround and handles. The unit shall be approved for use as specied
by CE, ANSI/UL, ETL and the FCC. The unit shall be the Lab.gruppen
PLM 20000Q.