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Lab Gruppen PLM 20000Q


Other Details

Limited warranty

Lab Gruppen PLM 20000Q

Pre-owned Lab Amplifiers in excellent condition

Max output power all channels driven

  • 16 ohms: 1150 W
  • 8 ohms: 2300 W
  • 4 ohms: 4400 W (*1)
  • 2 ohms: 4800 W (*1)

All channels driven into optimal impedance interval: > 5000 W into 2.2 - 3.3 ohms

The power amplifier platform of the PLM 20000Q integrates several new developments to maintain reliable, sustained output at unprecedented power levels. The Regulated Switch Mode Power Supply (R.SMPS) is a new universal design that connects to any mains supply in the world. (Operating range is 100 V - 265 V, but new Under Voltage Limiting extends operation down to 65 V with reduced output power.) The design also incorporates power factor correction (PFC) to reduce peak current draw from the mains.

Load Verification and Continuous Performance Monitoring

The PLM 20000Q includes a revolutionary set of tools for accurate load verification and real-time performance monitoring. The key to both features is LoadLibrary, a comprehensive database that provides unique “Fingerprints” (load characteristics) for each loudspeaker model in the system.

Lake Processing

The PLM 20000Q contains two Lake Processing modules, each offering precise settings for gain, delay, crossover slope, equalization, and limiting. Exclusive Lake Processing algorithms are included for Raised Cosine Equalization, linear phase crossovers, LimiterMax loudspeaker protection, and Iso-Float ground isolation. Raised Cosine Equalization is the foundation for the Lake Mesa EQ and the Ideal Graphic EQ. Mesa EQ offers asymmetric filtering to match the asymmetric responses of many loudspeaker systems the Ideal Graphic EQ offers true sum-to-flat response, so the adjustments provide uniform boost and cut along with greater selectivity.

Lake Controller Software

Lake Controller software provides a unified interface for control and monitoring of all functions of the PLM 20000Q. In addition to controlling all parameters of standard Lake Processing, new versions also provide control and monitoring of exclusive PLM features: digital input gain and attenuation, and load verification and performance monitoring via LoadSmart and SpeakerSafe. The Lake Controller software is optimized for a wireless Tablet PC. The same Lake Controller interface can be used to operate Dolby Lake Processors, Lake Contour, and Lake Mesa Quad EQ processors as part of a unified system.

Dante Digital Audio Network

PLM Series Powered Loudspeaker Management systems are equipped with Dante, a self-configuring digital audio networking solution from Audinate of Australia. Based on the newest developments in networking technology, Dante provides reliable, sampleaccurate audio distribution over Ethernet with extremely low latency. Dante incorporates Zen, an automatic device discovery and system configuration protocol which enables PLM Series products and other Dante-enabled products to find each other on the network and configure themselves.


    • 2U chassis weighing only 17 kg (37 lbs)
    • Class TD output stage
    • Universal (70 - 265 V) Regulated Switch Mode Power Supply (R.SMPS) works anywhere in the world
    • Power factor correction (PFC) helps maintain full output during extended power bursts
    • Copper-finned Intercooler with transverse-mounted output devices
    • Comprehensive loudspeaker preset database
    • LoadSmart load verification and SpeakerSafe continuous loudspeaker performance monitoring
    • Dante low-latency digital network included as standard
    • Compatible with Lake LM 26, Dolby Lake Processor and other legacy Lake devices
    • Primary and secondary network connections
    • Digitally controlled “amplifier gain” adjustable in 0.1 dB steps
    • Digital output attenuation in 0.25 dB steps from -inf to 0 dB
    • Binding post or Neutrik speakON output connectors
    • Digitally implemented, zero-overshoot Inter-Sample Voltage Peak Limiting (ISVPL) adjustable in 0.1 V steps from 17.8 to 194 V
    • Power Average Limiter (PAL) with software-controlled Breaker Emulation Limiter (BEL) prevents mains fuse tripping
    • Under-Voltage Limiting (UVL) enables continued operation with mains voltage sags as low as 65 V
    • High-brightness front-panel LCD display
    • Moisture resistant silicone touchpad



Number of input channels: 2

Number of output channels: 4

Peak total output all channels driven: 20000 W

Peak output voltage per channel: 194 V

Max output current per channel: 67 A peak


Max output power all channels driven

16 ohms: 1150 W

8 ohms: 2300 W

4 ohms: 4400 W (*1)

2 ohms: 4800 W (*1)

All channels driven into optimal impedance interval: > 5000 W into 2.2 - 3.3 ohms

Max output power bridged

8 ohms: 8800 W

4 ohms: 9600 W

Bridged into optimal impedance interval: > 10000 W into 4.4 – 6.6 ohms


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 with digital inputs (for all supported sample rates): >114 dB

Dynamic range with analog inputs: >110 dB

Frequency response (1 W into 8 Ohm, 20 Hz - 20kHz): +/- 0.05 dB

Common Mode Rejection (CMR): >74 dB, 20 Hz to 20 kHz

Internal Sample Rate / Data path: 96 kHz / 32 bit floating point

Product propagation delay (straight path analog server input -> amp): 1.61 ms

Product propagation delay AES 96 kHz / analog input: 1.68 ms

Sample Rate Converters

THD + Noise: 0.00003 %, 20 Hz - 20 kHz, unweighted

Analog to Digital inputs

Inputs: 2 inputs x 2 link

Input sensitivity settings: +12 or +26 dBu

THD + Noise: 0.00022 %, typical at 1 kHz unweighted at +26 dBu headroom setting

THD + Noise: 0.00033 %, typical at 20 Hz and 20 kHz unweighted at +26 dBu headroom setting

Gain, Sensitivity and Limiters

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): Yes

MaxPeak (peak voltage limiter): Yes

Output attenuator: -Inf to 0 dB, step size 0.25 dB

AES3/EBU (sample rate converters available as desired)

Support redundant paths: Yes

Flexible topology: Yes

Supported sample rates: 48, 96 kHz

Back panel Interface

AES / EBU / I/O (input + link): 2 x 3-pin XLR

Analog, 2-channel I/O (input + link): 4 x 3-pin XLR, electronically balanced

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

Cooling: Three fans, front-rear airflow, temperature controlled speed

Device presets

Local memory locations for the settings of the product: 100

Front-panel user interface

Display: 2.5 inch, 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: On/Standby

Meter button: Toggles through meter views

Menu: Provides a menu driven interface for full function front panel control

Rotary Encoder: Yes

Exit Button: Provides a “back” function


Operating voltage: 70-265 V AC

Soft start / Inrush power: Yes/ Max 8 A

Power Average Limiter (PAL): Yes

Power Factor Correction (PFC): Yes

Breaker Emulation Limiter (BEL): Yes, selectable breaker profile

Under Voltage Limiter (UVL): Yes

Dimensions - Weight - Finish

Rack rail to rear panel: W: 483 mm (19"), H: 88 mm (2 U), D: 424 mm (16")

Weight: 17 kg (37 lbs)

Finish: Black painted steel chassis with black painted steel / aluminum front


Approvals CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC


*1: Asymmetrical loading of the outputs will yield even higher ratings. If one (or two) channel(s) has reduced power requirements, then the voltage drop from the power supply will be reduced, resulting in higher power availability for the other channel(s).



Other Details

Limited warranty

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