Lab Gruppen D120-4TA
4x3000w Lake Amplifier

OUR PART #  D120-4TA

Lab Gruppen’s D 120:4Ta is based on the same foundation of robust, high-power amplifier technologies as their renowned PLM Series – an amplifier platform with proven reliability and sonic performance on the world’s most grueling concert tours, and in high-profile, large-scale installations.

With the D 120:4Ta, those same core technologies have been updated and refocused to provide the ultimate solution for the most demanding digitally networked installed sound applications – in stadia, arenas, theme parks, performing arts centers, racecourses and other large commercial sound installations.

In addition, the D 120:4Ta incorporates recently refined outputs stage technologies along with installation-targeted hardware and software features that optimize amplifier system design and configuration. Uniquely, these 'Tesira-variant' models feature fully integrated onboard Tesira DSP and AVB connectivity for seamless integration with Biamp Systems' DSP platform. All together, these technologies allow systems integrators to minimize both initial equipment costs and end users’ long-term energy consumption.

Rational Power Management (RPM)
At the core of the D Series platform is Rational Power Management (RPM), a proprietary Lab.gruppen technology that allows system designers and integrators the freedom to allocate the output power available on each channel for optimum performance with specific load conditions. RPM technology also enables the integrator to minimize initial equipment costs and reduce rack space requirement since with conventional installation amplifiers, it is often necessary to “over-specify” amplifiers to meet the maximum power demand on one channel, leaving excess power capacity wasted on the remaining channels.  RPM reduces costly excess capacity by allowing re-allocation of output power capacity among the four channels - with up to two channels on the D 120:4T/Ta capable of delivering up to 5,000 W power output on each channel, leaving the remaining available power to be allocated to the other channels for less demanding loads. 

CAFE for Green Credentials
The D 120:4Ta can be configured and monitored using the CAFE (Configuring Amplifiers For the Environment) software suite. Along with providing comprehensive system surveillance and configuration of RPM features, CAFE includes an innovative design aid – the Equipment Specification Predictor (ESP) – that provides tools for optimum specification of D Series units. ESP examines the system and load requirements and then supplies recommendations for the installation that include model and quantity of D Series units, heat generated, channel distribution, and current draw.  The end result is accurate mains management and precise specification of cooling systems and UPS, when required.

Seamless Integration with Tesira
All 3 power models in the D Series platform are available as Tesira variants for seamless integration into Biamp Systems’ comprehensive networked environment based on AVB protocols.  The D 120:4T/Ta functions as a discrete high-power output device in the Tesira environment, with multi-channel audio inputs, control and monitoring all carried over a single Cat-5e/6 network cable.  An analog input option is available for analog failover, which may be required in critical PA/VA applications.  These are specified as separate model variant - D 120:4Ta.

Rational Power Management
RPM allows truly flexible allocation of the 12,000 W of available power across all 4 channels of the D120:4 to ensure the most efficient and rational use of amplifier inventory. With up to 2 channels capable of up to 5,000 W without bridging (losing channel count), leaving remaining power to be allocated across other channels as required, D120:4 is capable of meeting the demands of even power-hungry performance install applications.

Tesira Integration with AVB Connectivity
Seamless integration into Biamp Systems’ comprehensive networked DSP platform based on AVB protocols. The D Series units function as a discrete high-power output device in the Tesira environment, with multi-channel audio inputs, control and monitoring all carried over a single Cat-5e/6 network cable.

Lab Gruppen D 120:4Ta Features:

  • Rational Power Management™ (RPM) – True flexibility in allocating total available power output across channel count for most efficient use of system inventory
  • Up to 5,000W per channel for driving high power elements (e.g. subwoofers) on all models
  • Integrates seamlessly with Tesira DSP platform as a high-power output object
  • Control D Series from within Tesira software
  • Platform indicators for Alarm, Activity, Status and Power and per-channel indicators for Load, Amp, Signal and Mute
  • CAFÉ (Configuring Amplifiers for the Environment) Software incorporating ESP (Equipment Specification Predictor) for design, system planning and equipment planning, installation and commissioning.
  • Regulated Switch-Mode Power Supply (R.SMPS™)
  • Breaker Emulation Limiter (BEL™) to prevent power interruption
  • Under-voltage Limiting (UVL™) for continued operation despite severe voltage drops
  • Best-in-class Power Factor Correction (PFC) with Current Draw Modelling
  • Proven and reliable Class TD® Output Stage with patented Intercooler® high-efficiency cooling system
  • Dedicated on-board surveillance & load monitoring system
  • Optional analog inputs for local system inputs or analog failover
  • Detachable Phoenix plug-in audio connectors for audio I/O

Lap Gruppen D 120:4Ta Specifications:

  • General:
    • Processing / Network: Tesira® by Biamp / AVB
    • Number of channels: 4
    • Total burst power all channels (share among channels with RP): 12,000 W
  • Max output power all channels driven:
    • 2 Ohms (per channel): 3,000 W
    • 2.67 Ohms (per channel): 3,000 W
    • 4 Ohms (per channel): 3,000 W
    • 8 Ohms (per channel): 1,900 W
    • 16 Ohms (per channel): 950 W
    • Hi-Z 70V (per channel) : 3,000 W
    • Hi-Z 100V (per channel): 3,000 W
  • Max output power single channel (all models):
    • 2 ohms: 4,400 W
    • 2.67 ohms: 5,900 W
    • 4 ohms: 4,600 W
    • 8 ohms: 2,300 W
    • 16 ohms: 1,150 W
    • Hi-Z 70 V: 3,300 W
    • Hi-Z 100 V: 4,700 W
  • Amplifier output module (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 (1 channel on D 80:4, 2 channels on D 120:4)
    • 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
  • Amplifier platform:
    • Inter Sample Voltage Peak Limiter (ISVPL): Configurable Peak voltage threshold and profile
    • Amplifier gain: Digital configurable amplifier gain 22-44 dB
    • Pilot tone generation and analysis: Yes
    • Load impedance analysis: Yes
    • Temperature control: Regulated fans and show must go on limitation (ATL, PTL)
    • 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 - 20kHz): +/- 0.05 dB
    • Internal Sample Rate / Data path: 96 kHz / 32 bit floating point
    • Product propagation delay (straight path analog server input -> amp): 3.857 ms / 185 samples @ 48 kHz
  • Back panel interface:
    • Optional analog inputs: 4 x Terminal block connectors mic/line level analog input with +,- and ground
    • Output connectors: 4 x 2 pole Terminal block connectors rated at 1000V/76A (exceeding amplifier capacity)
    • Can take up to 16 mm2 (6 AWG) cables
    • Ethernet Ports: 1 x RJ45 Tesira® Control, AVB networked Audio
    • Serial control port: DB-9 RS232 for power state management
    • General purpose I/O: Local GPIO for power state management and amplifier surveillance
    • Detachable mains cord: Neutrik PowerCon rated at 250V/32A
  • Tesira:
    • D Series Tesira system integration: Tesira expander class device with full integration of amplifier configuration and amplifier surveillance
    • Device swap: Host name hot swap with full configuration transfer
    • Auto power down: Configurable auto power down to ultra-low consumption SLEEP state
    • Channel processing: Mute, Level, Signal invert
  • AVB Audio Network:
    • AVB I/O: 4x4
    • Sample rates / transport: 48 kHz / Unicast
    • Network latency: Configurable 1 or 2 milliseconds
    • Optional 4 channels analog inputs (included in the Ta versions):
    • Usage: Configurable as Tesira system inputs or analog failover
    • Balanced mic or line level input: +48V phantom power and digitally controlled input gain
    • Maximum input and digital reference: +24 dBu
    • Internal Sample Rate / Data path: 48 kHz / 32 bit floating point
    • Input impedance: 8 k ohm
    • Frequency response (20 Hz - 20 kHz @ 4 dBu): +/- 0.25 dB
    • THD+N (20 Hz - 20 kHz @ 0 dB gain +4 dBu in): 0.006%
    • Dynamic range (20 Hz - 20 kHz, 0 dB): > 108 dB
    • Cross talk (20 Hz - 20 kHz @ 0 dB gain + 4 dBu in): > 85 dB
  • Front-panel user interface:
    • System status indication: 3 x 3 colored LED. ALARM, ACTIVITY, STATUS for Tesira® system status and Device STATUS indication
    • Channel status indication: 3 x 3 colored LED per channel. Status indication separated for channel LOAD, AMP, SIGNAL status
    • Mute: Per channel touch button for MUTE control and bicolored LED
    • Power: Touch button for ON/SLEEP control and 3 colored LED for power state indication
    • Select: Touch button and LED for bidirectional device software select functionality
  • Mains Power:
    • Nominal voltage: 100-240 Volt AC 50-60 Hz
    • Operating voltage: 70 - 265 V AC 45 - 66 Hz
    • Mains wall plug: Selectable on order, CEE 7/7 “Schuko” 230 V / 16 A, NEMA L5-30 “Twistlock” 125 V / 30 A, NEMA 5-20P 125 V / 20 A (D 120:4 models only), NEMA 6-20P 250 V / 20 A, AS/NZS 3112 230 V / 15 A (Aus/Nz), BS 546 230 V / 16 A (India), C-30P 125V / 30A (Japan)
  • Power supply features:
    • Soft start / Inrush power: Yes/ Max 8 A
    • Power factor correction: > 0.98 for mains power > 400W
    • Regulated switch mode power supply (R.SMPS): Yes
    • Breaker Emulation Limiter (BEL): Configurable current threshold and breaker profile
    • BEL max current threshold: 25 A
    • Power Average Limiter (PAL): Yes
    • Under Voltage Limiter (UVL): Yes
    • Mains undervoltage and overvoltage protection and mains glitch tolerance: Yes
  • Dimensions:
    • Rack rail to rear panel: W: 483 mm (19"), H: 88 mm (2 U), D: 424 mm (16")
    • Overall depth front-rear support: D: 463 mm
    • Weight: 15.8 kg (35 lbs.)
    • Finish: Black painted steel chassis with grey painted steel front with detachable grille
    • Approvals: CE, ETL (ANSI/UL, CSA), PSE, RCM
      **Note: Lab Gruppen burst power (1 kHz, 25 ms burst power @ 150 BPM, 12 dB Crest factor)
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