The L-Acoustics LA8 R3 is a high-end, 4-channel amplified controller that serves as the foundation for driving signature L-Acoustics loudspeaker systems (such as the K series, Kara, and ARCS). Unlike a standard standalone power amplifier (like the Lab Gruppen FP 10000Q), the LA8 R3 integrates high-efficiency Class D amplification, powerful onboard SHARC DSP, and proprietary loudspeaker protection into a single 2U ecosystem.
The R3 revision is a major workflow upgrade, adding AES67 network audio support, an updated Dante stack, improved thermal modeling, and compatibility with the latest L-Acoustics management software.
Key Specifications
- Power Output: Continuous RMS output with all channels driven:
- 4 x 1,800 Watts at 4 Ohms (or 2.7 Ohms)
- 4 x 1,100 Watts at 8 Ohms
- DSP Platform: 96 kHz / 32-bit floating-point SHARC DSP paired with 24-bit A/D converters boasting an ultra-wide 130 dB dynamic range.
- Inputs: 2 x Analog XLR inputs, plus an onboard LA-AES3 digital input card supporting AES/EBU and networked digital audio distribution.
- Outputs: 2 x Speakon NL4 connectors and 1 x 8-point CA-COM connector.
- Weight & Size: 2U rack space weighing 12.2 kg (26.9 lbs).
Core Technologies & Features
- Closed-Loop Preset Ecosystem: The LA8 operates inside a closed L-Acoustics environment. It features an onboard factory preset library optimized for active/passive crossover points, system equalization, and time-alignment.
- L-DRIVE Protection Suite: Rather than using simple clip-limiters, the DSP runs real-time internal thermal and excursion modeling of the speaker drivers. This safeguards the transducers from over-excursion or overheating while maintaining maximum audio headroom.
- Dual IIR/FIR Filter Algorithms: Utilizes advanced filtering to optimize linear phase response and overall system impulse control, resulting in pristine sonic clarity at high touring volumes.
- LA Network Manager: Entirely controllable via Ethernet using the L-Acoustics Network Manager software for real-time monitoring, array tuning, and zone control across large multi-amplifier rigs.
