L-Acoustics
L-Acoustics
LA4X
Amplified controller
An amplified controller driving four speaker channels at 1000 W each, carrying the presets that make every cabinet perform as designed. Used at the side of stage as the link between the mixing desk and each loudspeaker in the system.
Enquire About the LA4X
We will confirm the setup and availability for your event.
What It Is
A 2U rack unit, 483 × 88 × 406 mm and 11.3 kg, drawing 60 W at idle. Up to a second of delay per output aligns fills and delay stacks with the main array.
What It Does
- Input / amplifier architecture4 inputs × 4 amplified outputs; routing and summation
- ProcessorSHARC 32-bit floating point; 96 kHz
- Frequency response20 Hz–20 kHz, ±0.25 dB
- Loudspeaker outputs4 × 4-pole speakON
Best For
Specifications
- Channel separation
- >80 dB at 1 kHz, 8 Ω
- Rated output, 4 Ω
- 4 × 1000 W RMS
- Rated output, 8 Ω
- 4 × 1000 W RMS
- Output stage
- Class D
- Maximum output voltage
- 150 V peak, no load
- Amplifier gain
- 32 dB
| Amplification | |
|---|---|
| Rated output, 4 Ω | 4 × 1000 W RMSEIA, 1% THD, 1 kHz, all channels driven. |
| Rated output, 8 Ω | 4 × 1000 W RMSEIA, 1% THD, 1 kHz, all channels driven. |
| Output stage | Class D |
| Maximum output voltage | 150 V peak, no load |
| Amplifier gain | 32 dB |
| Architecture | |
| Input / amplifier architecture | 4 inputs × 4 amplified outputs; routing and summation |
| Audio | |
| Frequency response | 20 Hz–20 kHz, ±0.25 dB8 Ω load, 60 W output. |
| THD+N | <0.05%20 Hz–20 kHz, 8 Ω load, 60 W output. |
| Output dynamic range | >110 dB20 Hz–20 kHz, 8 Ω, A-weighted, digital input. |
| Output noise | <−70 dBV20 Hz–20 kHz, 8 Ω, A-weighted, digital input. |
| Channel separation | >80 dB at 1 kHz, 8 Ω |
| Connections | |
| Loudspeaker outputs | 4 × 4-pole speakON |
| Control | |
| Network connectors / software | 2 × 1 Gb/s etherCON; LA Network Manager |
| Cooling | |
| Fans | 2 temperature-controlled fans |
| DSP | |
| Processor | SHARC 32-bit floating point; 96 kHz |
| Per-output equalisation | 8 IIR + 4 FIR EQ filters; array morphing and air-absorption compensation |
| Output delay | 0–1000 ms |
| Loudspeaker protection | L-DRIVE: excursion, temperature and over-voltage management |
| Environment | |
| Operating ambient temperature | 0–50 °C |
| Inputs | |
| Analog inputs / links | 4 female XLR3 inputs; 4 male XLR3 links |
| Analog input impedance / maximum level | 22 kΩ balanced; +22 dBu maximum at 1% THD |
| AES/EBU | 4 channels over 2 AES3 inputs; 44.1–192 kHz; sample-rate conversionShares physical A and C XLRs with analog inputs. |
| Milan-AVB audio | 4 channels from one stream of up to 8 channels, 48 or 96 kHzHardware ID1–3 do not support AVB unless upgraded with KR LA4XDSP2. ID4+ supports AVB; redundancy is not supported. |
| Latency | |
| Analog / AES standard and low-latency modes | 3.84 ms standard; 0.84 ms low latencyIndependent of input sample rate; preset/mode suitability must be checked. |
| Physical | |
| Dimensions, W × H × D | 483 × 88 × 406 mm; 2UManufacturer nominal chassis dimension; allow additional cable/connector clearance. |
| Weight | 11.3 kg |
| Power | |
| Power supply | Universal SMPS with Power Factor Correction |
| Mains voltage / frequency | 100–240 V AC ±10%; 50–60 Hz |
| Nominal circuit requirements | 20 A at 100–120 V; 10 A at 200–240 V; Class C circuit breakers |
| Input draw at 1/8 rated output | 3 A / 750 W at 230 VAll channels driven, −9 dB relative to full output. |
| Idle / standby power | 60 W idle; 11 W standby |
Documents
Use the manufacturer documents for detailed setup and operating information.
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