LAB GRUPPEN PLM 5K44_002 5000W Amplifier with 4 Flexible Output-Channels, Lake Digital Signal Processing and Digital Audio Networking for Touring Applications (PLM 5K44_002)

Vendor: Lab Gruppen
  LAB GRUPPEN PLM 5K44_002 5000W Amplifier with 4 Flexible Output-Channels, Lake Digital Signal Processing and Digital Audio Networking for Touring Applications (PLM 5K44_002) The PLM 12K44 represents the pinnacle of powered loudspeaker...


LAB GRUPPEN PLM 5K44_002 5000W Amplifier with 4 Flexible Output-Channels, Lake Digital Signal Processing and Digital Audio Networking for Touring Applications (PLM 5K44_002)

The PLM 12K44 represents the pinnacle of powered loudspeaker management systems, combining a 4-in, 4-out configuration with the industry-standard Dante Networking, setting a new benchmark in this realm. Building upon the renowned Lab Gruppen touring legacy seen in the iconic PLM series, the PLM 12K44 introduces a powerful new feature: the ability to optimize performance by intelligently allocating power between channels. This latest iteration now offers an extended 4-in, 4-out configuration coupled with twice the processing power through the latest version 6.3 Lake Controller release and incorporates industry-standard Dante® networking. Featuring four channels of incredibly robust amplification alongside unparalleled signal processing and audio management, the PLM 12K44 embodies the essence of total integration. This integration spans across all facets, including networking, audio I/O, signal processing, amplification, power supply, and connected mains supply, culminating in complete control and monitoring of the entire platform. This comprehensive integration results in unparalleled operational advantages, setting a new standard in the domain of powered loudspeaker management systems.

Rational Power Management (RPM)

The PLM 12K44 introduces Rational Power Management (RPM), a proprietary technology from Lab Gruppen, elevating the capabilities beyond traditional expectations. RPM empowers designers and systems techs with unprecedented control over allocating the available output power of each amplifier channel, optimizing performance under specific load conditions. This breakthrough feature provides genuine flexibility by enabling tailoring of each channel to meet the precise requirements of the connected load, with any unused power redistributing for use across other channels. RPM revolutionizes conventional practices by eliminating the need for over-specification or bridging adjacent channels to accommodate power-hungry loads. This eradicates the loss of channel count and enables substantial cost savings, reduced rack space, and improved long-term energy efficiency, all while preserving sonic performance integrity. With Rational Power Management, features ensure the defined power output for specific channels, facilitating calculations for different loads within the CAFÉ software. RPM analyzes these power demands in relation to channel and device constraints, guiding system designers toward the most efficient means of powering the PA. The practical impact of Rational Power Management is substantial, yielding immediate and long-term savings. Often, fewer amplifiers or lower-cost models suffice while meeting power requirements. It optimizes mains management, preventing over-specification of mains distribution, cooling, and UPS units. Moreover, enhanced efficiency in larger systems minimizes current consumption, leading to reduced operational costs and delivering an eco-friendly advantage—a testament to its sustainable and cost-effective design for system owners.

The Power of Lake Processing

The PLM 12K44 harnesses the unparalleled power of exclusive Lake Processing algorithms, integrating four comprehensive Lake modules with four discrete channels of audio throughput from input to output. It provides versatile signal selection, with audio sourced from four analog channels (featuring Iso-Float ground isolation), four via AES3 digital inputs, and eight dual redundant Dante networked digital inputs. Each channel offers individual input signal selection, with programmable failover to alternate inputs as needed. Its onboard Lake Processor boasts full features, including group control and Raised Cosine MESA EQ asymmetric filters that precisely align with diverse loudspeaker responses. The LimiterMax peak and RMS limiters set industry benchmarks for safeguarding loudspeakers while preserving sonic transparency. The bundled Lake Controller software serves as a unified interface, enabling control over Lake functions and comprehensive monitoring of amplifier status and connected loudspeaker loads. Optimized for wireless tablet PCs, the interface is intuitive, mirroring the tactile feel of real-time analog controls and faders. Additionally, it seamlessly integrates with third-party real-time sound system measurement, optimization, and control software. This allows users to conduct spectrum measurements, adjust system EQ, and analyze transfer functions simultaneously, streamlining the entire process through a unified user interface. Lake Processing also offers an array of crossover options, from classical to linear-phase crossovers, providing slopes of up to 48 dB per octave or exceeding 180 dB per octave. This level of control helps limit issues like lobing and off-axis cancellation, enhancing precision and performance in audio management.

CAFÉ for Green Credentials

CAFÉ (Configuring Amplifiers For the Environment) is a software suite that allows the PLM 12K44 to be easily configured and monitored in the most efficient manner possible. In addition to providing comprehensive system surveillance and configuration of RPM and other amplifier features such as ISVPL and Breaker Emulation Limiter (BEL), CAFÉ also includes valuable help to save the environment. In combination with the RPM configuration, CAFÉ can accurately predict estimations of average mains current draw and generated heat, and utilizing the PLM+ Series’ innovative power supply technologies in combination with BEL the mains draw can be safeguarded to a predicted level. The result is precise mains management and thermal control, which allows more accurate (rather than over-specified) provision of mains distribution, cabling, and cooling. This technology suite reduces lifetime running costs and minimizes environmental impact. It also reduces demands on UPS systems.

Allocate Power Where It Is Needed

RPM Provides ultimate flexibility of power output allocation across channels to match specific load requirements, enabling more efficient use of amplifier inventory.

More is More: Power, Performance and Processing

PLM+ offers unprecedented levels of refined performance, double the processing power, and even better overall efficiency – proven, tested, and trusted.

CAFÉ with ESP: Configuration, Control and Monitoring

Lab Gruppen’s dedicated integrated software provides comprehensive system surveillance, reducing running costs and minimizing environmental impact.


  • 12,000 Watt amplifier with 4 flexible output channels and up to 5,900 Watts channel output for touring applications

  • Lake digital signal processing for unparalleled loudspeaker management and system control

  • Integrated 8x8 channels of dual redundant Dante digital audio networking with AES67 support

  • 4 x 3,000 Watts into 2 Ohms, 4 x 3,000 Watts into 2.67 Ohms, 4 x 3,000 Watts into 4 Ohms, 4 x 1,900 Watts into 8 Ohms, 4 x 950 Watts into 16 Ohms, 4 x 3,000 Watts into Hi-Z 70 V, 4 x 3,000 Watts into Hi-Z 100 V

  • Proven and reliable Class-TD output stage with proprietary Intercooler high-efficiency cooling system

  • Rational Power Management (RPM) provides total flexibility to allocate available power across all 4 output channels

  • Best-in-class Power Factor Correction (PFC) with Current Draw Modelling reduces running costs and minimizes environmental impact

  • Under-Voltage Limiting (UVL) for continued operation during severe mains supply voltage drops

  • Dedicated on-board surveillance and load monitoring for complete peace of mind

  • Redundant audio inputs and onboard system surveillance for full system security

  • Backlit, white-on-black front panel display and menu navigation buttons

  • 100 user presets for simple and efficient system configuration and set-up

  • 3 front-to-rear airflow fans with temperature control for optimal speed and reduced noise

  • 4 "Lake Class" analog input channels with Iso-Float ground isolation

  • 4 input channels of AES/EBU (AES3) digital audio supporting all standard sample rates up to 192 kHz with 24-bit resolution

  • 2 Neutrik etherCON RJ-45 ports provide dual redundant Dante interfaces and remote configuration via Lake Controller and Dante Controller software

  • Balanced analog and AES/EBU audio inputs on Neutrik XLR connectors

  • Rugged binding post output connectors

  • Detachable Neutrik powerCON cable rated at 250 V / 32 A

  • Removable dust filter grilles for increased air circulation

  • Rugged 2U rackmount chassis for durability in touring applications

Processing / Network

Lake / Dante

Number of amplifier channels


Total burst power all channels (share among channels with RPM)

12000 W

Max output power (all channels driven)1
2 ohms

3000 W

2.67 ohms

3000 W

4 ohms

3000 W

8 ohms

1900 W

16 ohms

950 W

Hi-Z 70 V

3000 W

Hi-Z 100 V

3000 W

Max output power single channel1
2 ohms

4400 W

2.67 ohms

5900 W

4 ohms

4600 W

8 ohms

2300 W

16 ohms

1150 W

Hi-Z 70 V

3300 W

Hi-Z 100 V

4700 W

Amplifier output modules (all models, all channels)
Peak output voltage

194 V

Max. output current

67 A

Rational Power Management (RPM)

Regardless of model, any channel has potential to deliver the max single channel output power

Default voltage limitation (can be lifted with RPM configuration)

175 V

Protection features

Current Average Limiter (CAL), Very High Frequency Protection (VHF), Direct Current Protection (DC), Short Circuit Protection, Current-Clip Limiter, Voltage Clip Limiter, Temperature protection

Audio Performance (Amplifier platform with digital input)
THD + N 20 Hz - 20 kHz for 1 W

< 0.05 %

THD + N at 1 kHz and 1 dB below clipping

< 0.04 %

Dynamic range

> 114 dB

Channel separation (Crosstalk) at 1 kHz

> 70 dB

Frequency response (1 W into 8 Ohm, 20 Hz - 20 kHz)

+/- 0.05 dB

Internal Sample Rate / Data path

48 / 96 kHz / 32 bit floating point

Product propagation delay AES 96 kHz / analog input

1.61 / 1.68 ms

Lake processing
Loudspeaker processing

Up to 4 modules of Classic/linear-phase/FIR crossover, EQ, delay, LimiterMax™ - peak and RMS limiters

System tuning

Group control with Raised Cosine™ MESA EG™ asymmetric filters

Input redundancy / Matrix

Automatic 4 level input redundancy / 4 input mixers

System integration

Comprehensive 3rd party protocol over UDP Ethernet

Measurement & Analysis
Pilot tone generation and analysis


Load impedance analysis


Real Time Analyzer (RTA), 3rd party integration


Dante Audio Network
Dante I/O

8 x 8

Network topology / redundancy

Flexible topology / Supports daisy-chained and Dual redundant networks

Sample Rates / Transport

48, 96 kHz / Uni + Multicast

Network latency

0.25, 0.5, 1.0, 2.0, 5.0 ms

Device presets
Local memory locations for the settings of the product


AES Inputs

4 AES inputs

Supported sample rates / resolution

44.1, 48, 88.2, 96, 176.4, 192 kHz / up to 24 bits

Sample rate conversion THD+N 20 Hz - 20 kHz unweighted


Analog Inputs

4 high quality inputs with Iso-Float ground isolation

Maximum input / digital reference

+26 dBu / +21 dBu

Sampling rate / Resolution

96 kHz / 24 bit

Input impedance balanced / unbalanced

20 / 10 kOhm

THD+N (typical at 1 kHz unweighted)


THD+N (typical at 20 Hz and 20 kHz unweighted)


Adjustable Inter-Sample Voltage Peak Limiter (ISVPL)

17.8 - 194 V, step size 0.1 V

Current Peak Limiter < 300 ms

67 A peak

Current Average Limiter (CAL) > 300 ms

33 Arms

MaxRMS (rms voltage limiter)


MaxPeak (peak voltage limiter)


Amplifier gain

22 - 44 dB, step size 0.1 dB

Output attenuator

-Inf to 0 dB, step size 0.25 dB

Back panel Interface
Analog, 2-channel I/O (input + link)

4 x 3-pin XLR, electronically balanced

AES / EBU / I/O (input + link)

2 x 3-pin XLR

Output connectors

Neutrik speakON (1 x NLT8, 2 x NLT4) or 4 Binding Posts (pairs)

Auto 10/100, Auto Uplink

2 x RJ45 etherCON

Control and monitoring interface

Via Ethernet for Lake Controller software, or DLM (the 3rd party protocol)

Detachable mains cord

Neutrik PowerCon rated at 250V/32A


Three fans, front-rear airflow, temperature controlled speed

Front-panel user interface

2.5 inch, black / white, daylight readable LCD

Fault/Warning/Limit/Clip indicators

RGB LEDs and detailed fault description on display

Mute and soft function buttons

8 provided

Standby Power button


Mute Enable button

Enables muting of outputs and inputs via soft-button keypad

Meter button

Toggles through meter views

Menu button

Provides a menu driven interface for full function front panel control

Rotary Encoder


Exit Button

Provides a “back” function

Mains Power
Nominal voltage

100 - 240 Volt AC 45 - 66 Hz

Operating voltage

70-265 V AC

Mains wall plug

NEMA L5-30 "Twist lock" 125 V / 30 A, and CEE 7/7 "Schuko" 230 V / 16 A

Power supply features
Soft start / Inrush power

Yes/ Max 8 Ampere

Power Factor Correction (PFC)


Regulated switch mode power supply (R.SMPS)


Breaker Emulation Limiter (BEL)

Configurable current threshold and breaker profile

BEL max current threshold

25 A

Power Average Limiter (PAL)


Under Voltage Limiter (UVL)


Mains undervoltage and overvoltage protection and mains glitch tolerance


Rack rail to rear panel

W: 483 mm (19"), H: 88 mm (2 U), D: 424 mm (16")

Overall depth front-rear support

D: 498 mm (19.6")


16.5 kg (36 lbs)


Black painted steel chassis with black painted steel / aluminum front