L-Acoustics LA4, Руководство пользователя

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LA4
AMPLIFIED CONTROLLER
User Manual
VERSION 1.1
LA4_UM_ML_1.1
w w w . l - a c o u s t i c s . c o m
42 en
9 SPECIFICATIONS
Output power EIA (1% THD, 1 kHz, all channels driven)
4 x 800 W @ 8
Ω
(4 x 930 W peak) / 4 x 1000 W @ 4
Ω
(4 x 1600 W peak)
Max output voltage 125V (Peak voltage, no load )
Circuitry Bipolar, Class H 2-step high efficiency circuit
Digital Signal Processor Two cascaded 24 bit A/D converters (130dB dynamic range)
(DSP) DSP SHARC 32 bit/ floating point, 96kHz sampling rate
Latency
3.9ms
Frequency range 10 Hz–30 kHz (-0,1/+0,15 dB @ 8 Ω )
Distortion THD+N (typical) < 0,004 % (20–10 kHz, 8 Ω , 3 dB below rated power)
Output dynamic range 111dB (20–20 kHz, 8 Ω , A-weighted)
Amplification gain 32 dB
Noise level -73dBV (20–20 kHz, 8 Ω , A-weighted)
Input impedance 22 k Ω (balanced)
Max input level 22 dBu (balanced, THD 1 %)
Channel separation >90 dB (@ 1kHz)
Damping factor > 400 (8 Ω , 1 kHz and below)
Mains input power and current draw (All channels driven)
Maximum output power Mains input power and current draw
Load Number of channels Power 1/3 Output Power (-5 dB) 1/8 Output Power (-9 dB)
4 Ω 4X 1000 W 22 A / 3250 W 12 A / 1600 W
8 Ω 4X 800 W 17 A / 2550 W 9 A / 1350 W
Values given for 230V mains input. Multiply current values by 2 for 120 V / Multiply current values by 2.3 for 100 V.
Operating voltage 120 / 230V AC (±10%), 50 - 60Hz 100V AC, 50 - 60Hz (for Japan)
Circuits Protection inrush-current limitation, mains supply failure and over-voltage detection,
temperature monitoring of transformers and heat-sinks,
output DC protection, output over current protection
Transducers protection L-DRIVE Thermal and Over excursion monitoring
Fan 2 temperature dependent speed-controlled axial fans
Indicators LEDs for Load, Signal, Level (-25 dB, -10 dB, -5 dB), Clip
Input and link connectors (2 channels IN A, IN B)
Two 3-pin XLR male and female per channel, pin 2 = hot (+)
Output Connectors (4 channels OUT 1 to OUT 4)
One NEUTRIK ® NL4FC Speakon connector per output channel
L-NET connectors 2 in/out Fast Ethernet RJ45 connectors
Options L-DGA network digital audio card (available as a future development)
Dimensions (WxHxD) 483 x 88.1 (2U) x 419 mm
Ö
19 x 3.5 (2U) x 16.5 in
Weight 11.1 kg
Ö
24.5 lbs
Finish black and anthracite grey