L-Acoustics LA12X

Features

12,000 W with record hold times
Universal SMPS with Power Factor Correction
High tolerance to unstable mains (100-240V)
Boosted DSP resources
4 x 4 architecture for passive systems
AVB/TSN-ready

Specifications

Operating conditions

• Temperature: Room temperature from 0º C / 32º F to +50º C / 122º F

Amplification and power supply

• Amplification class: Class D
• Output power CEA-2006 / 490A (1% THD, 1 kHz, all channels driven)
  • 4 x 1400 W RMS (at 8Ω)
  • 4 x 2600 W RMS (at 4Ω)
  • 4 x 3300 W RMS (at 2.7Ω)
• Power supply model: Universal Switched Mode Power Supply (SMPS) with Power Factor Correction (PFC)
• Power factor: > 0.9
• Mains rating: 100 V - 240 V ~ ±10%, 50-60 Hz
• Nominal current requirements: 30 A for 100-120 V, 16 A for 200-240 V

Audio specifications

• Frequency response:
  • 20 Hz - 20 kHz, ± 0.1 dB (at 8Ω, 60 W output power)
  • 20 Hz - 20 kHz, ± 0.1 dB (at 4Ω, 120 W output power)
• Distortion THD+N (20 Hz - 10 kHz)
  • < 0.05% (at 8Ω, 60 W output power)
  • < 0.1% (at 4Ω, 120 W output power)
• Output dynamic range (20 Hz - 20 kHz, 8Ω, A-weigthed): > 114 dB
• Noise level (20 Hz - 20 kHz, 8Ω, A-weigthed): < - 72 dBV
• Channel separation (at 1 kHz , 4Ω): > 85 dB
• Latency (for both analog and digital inputs)
  • Standard operating mode: 3.84 ms
  • Low latency operating mode: 0.76 ms

DSP

• Digital Signal Processor (DSP): 2 x SHARC 32-bit, floating point, 96 kHz sampling rate
• I/O routing: Flexible 4x4 routing matrix
• Per output channel
  • Built-in EQ station with 8 IIR, 3 FIR EQ filters
  • Array morphing (LF contour, zoom factor)
  • Air absorption compensation filters
  • Internal IIR and FIR EQ algorithms for speaker phase linearization and improved impulse responses
  • L-DRIVE protection (excursion, temperature and over-voltage)
• Output delay: 0 ms to 1000 ms
• Transducers protection: L-DRIVE: excursion / temperature / over-voltage

Circuits protection

• Mains and power supply: Over and under voltage / over temperature / overcurrent (fuse protection, and inrush current protection)
• Power outputs: Over current / DC / short circuit / rail over and under voltage / over temperature
• Cooling: Cooling fans with temperature control speed

Inputs

• Analog: 4 balanced analog line inputs with passively connected link
  • A/D conversion: 4 cascaded 24-bit analog/digital converters (130 dB dynamic range)
  • Input impedance: 22 kΩ (balanced)
  • Max. input level: 22 dBu (balanced, THD 1%)
• Digital: 2 AES/EBU inputs (4 channels) with electronically buffered link and failsafe relay
  • Standard: AES/EBU (AES3)
  • Sampling frequency (Fs): 44.1, 48, 88.2, 96, 176.4 or 192 kHz
  • Word length: 16, 18, 20 or 24 bits
  • Synchronization: Signal resampled to internal clock at 96 kHz
  • Sampling frequency: 96 kHz (SRC referenced to the amplified controller internal clock)
  • Dynamic range: 140 dB
  • Distortion (THD+N): < -120 dBfs
  • Bandpass ripple: ± 0.05 dB (20 Hz - 40 kHz, 96 kHz)
  • Fallback mode: AB to CD: digital to analog / digital to digital
  • Switchover conditions: No clock, loss of lock, CRC error, bipolar encoding error or data slip
  • Constant delay: Independent of input Fs
  • Constant level: Upon user setting of AES/EBU gain, independent of input Fs
  • Input gain: -12 dB to +12 dB, 0.1 dB steps
  • Revert to AES/EBU: Upon manual user selection

Remote control and monitoring

• Network connection: Dual-port Ethernet Gigabit interface
• L-Acoustics remote control software: LA Network Manager 2
• Third-party management solutions: SNMP / Extron®/ Crestron®

Physical data

• Height: 2U
• Weight: 14.5 kg / 32 lb
• Protection rating: IP2X