L-Acoustics

LA8

Name: LA8
Brand: L-Acoustics

Amplified controller

An amplified controller with four outputs at 1800 W each into 4 ohms, for systems larger than the LA4X covers. Used as an array grows, or where subs and fills need more headroom than a smaller controller provides.

Enquire About the LA8

We will confirm the setup and availability for your event.

What It Is

A 2U rack unit at 12.2 kg, drawing 115 W at idle. Several rack together into a touring case, so a full system is powered and processed from one position.

What It Does

Input / output architecture2-input × 4-output DSP; 4 amplifier channels
ProcessorSHARC 32-bit floating point; 96 kHz
Frequency response20 Hz–20 kHz, ±0.15 dB at 8 Ω
Loudspeaker connectors2 × 4-pole speakON; 1 × 8-pole CA-COM

Best For

Conference main loudspeakers
Gala subwoofer channels
Live-stage monitoring
Audience fills and delays
Touring rack systems

Specifications

Output at 8 Ω: 4 × 1100 W RMS
Output at 4 Ω or 2.7 Ω: 4 × 1800 W RMS
Channel separation: >85 dB at 1 kHz
Maximum output voltage: 150 V peak, no load
Amplification class / gain: Class D; 32 dB gain
Output dynamic range: 107 dB

Amplification
Output at 8 Ω	4 × 1100 W RMSEIA, 1% THD, 1 kHz, all channels driven.
Output at 4 Ω or 2.7 Ω	4 × 1800 W RMSEIA, 1% THD, 1 kHz, all channels driven.
Maximum output voltage	150 V peak, no load
Amplification class / gain	Class D; 32 dB gain
Architecture
Input / output architecture	2-input × 4-output DSP; 4 amplifier channels
Audio
Frequency response	20 Hz–20 kHz, ±0.15 dB at 8 Ω
THD+N	<0.0005%Manual v19.0: 20 Hz–10 kHz, 8 Ω, 11 dB below rated power.
Output dynamic range	107 dB20 Hz–20 kHz, 8 Ω, A-weighted.
Output noise	−67 dBV20 Hz–20 kHz, 8 Ω, A-weighted.
Channel separation	>85 dB at 1 kHz
Damping factor	>600 at 1 kHz and below, 8 Ω
Connections
Loudspeaker connectors	2 × 4-pole speakON; 1 × 8-pole CA-COMOwner’s manual v19.0 configuration; inspect older rear-panel revisions.
Control
Network / software	2 fast-Ethernet RJ45 in/out; L-NET / LA Network ManagerControl network, not documented Dante or Milan audio.
Cooling
Fans / fan noise	2 variable-speed fans; 24 dBA minimum / 42 dBA maximum at 1 mNoise measured in free field.
DSP
Processor	SHARC 32-bit floating point; 96 kHz
Output delay	0–680 ms
System protection	L-DRIVE excursion, temperature and over-voltage management
Environment
Ambient operating range	0–50 °C
Inputs
Analog audio inputs / links	2 female XLR3 inputs; 2 male XLR3 links
Input impedance / maximum level	22 kΩ balanced; +22 dBu at 1% THD
Analog conversion	2 cascaded 24-bit converters; 130 dB dynamic range
AES/EBU input / link	1 female XLR3 input; 1 buffered male XLR3 link with failsafe relayApplies to configuration with LA-AES3 board; inspect actual unit.
Digital sample rates / word lengths	44.1, 48, 64, 88.2, 96, 128, 176.4 or 192 kHz; 16/18/20/24 bit
Sample-rate converter	96 kHz internal; 24 bit; 140 dB dynamic range
Input gain adjustment	−12 to +12 dB in 0.1 dB steps
Latency
Analog / AES latency	3.84 ms standard; 1.18 ms low latencyIndependent of input sampling frequency.
Physical
Rack dimensions, W × H × D	483 × 88 × 420 mm; 2UNominal overall dimension in archived sheet; rear cable clearance is additional.
Net weight	12.2 kg
Power
Mains variants	LA8 / LA8US: 120–230 V AC ±10%; LA8JP: 100–200 V AC ±10%; 50–60 HzRead actual regional label before connection.
Input draw at 1/8 output, 4 Ω	11 A / 1500 W at 230 VAll channels driven; −9 dB relative to rated output.
Input draw at 1/8 output, 8 Ω	10 A / 1300 W at 230 VAll channels driven; −9 dB relative to rated output.
Idle / standby power	115 W idle; 12 W standby