L-ACOUSTICS LA8 [51/56] Specifications specifications specifications specifications

L-ACOUSTICS LA8 [51/56] Specifications specifications specifications specifications
LA8_UM_EN_4-0
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9 SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
GENERAL
Dimensions (W x H x D)
483 x 88,1 (2U) x 428
mm
19 x 3.5 (2U) x 16.8 inch
Weight 12.7 kg / 27.9 lbs Finish Black and anthracite gray
Output power
EIA (1% THD, 1 kHz, all channels driven)
4 x 1100 W at 8 (4 x 1300 W peak) / 4 x 1800 W at 4 (4 x 2500 W peak)
Max output voltage 150 V (Peak voltage, no load)
Circuitry
Class D
Digital Signal Processor (DSP) DSP SHARC 32 bit / floating point, 96 kHz sampling rate
Frequency range 10 Hz-20 kHz (±1.5 at 8 Ω)
Distortion THD+N (typical) < 0.05 % (20 Hz-10 kHz, 8 Ω, 11 dB below rated power)
Output dynamic range
112 dB (20 Hz
-
20 kHz, 8
, A
-
weighted)
Amplification gain 32 dB
Noise level -72 dBV (20 Hz-20 kHz, 8 Ω, A-weighted)
Channel separation > 85 dB (at 1 kHz)
Damping factor > 600 (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 Nb. of channels Power 1/3 Output Power (-5 dB) 1/8 Output Power (-9 dB) ID
E
4
4 x
1800 W
22 A / 3100 W
11 A /
1500 W
0.4 A /
100 W
8
4 x
1100 W
15 A / 1950 W
10 A / 1300 W
The current values are given for mains rated at 230 V. Multiply by 2 for 120 V, 1.15 for 200 V, and 2.3 for 100 V.
If the voltage outsides a plus or minus 10 % range, the maximum power is
o longer g
arant
ed.
Mains ratings LA8 & LA8US: 120/230 V AC (±10 %), 50-60 Hz LA8JP: 100/200 V AC (±10 %), 50-60 Hz
Operating temperature From -5°C to +50°C (environment) From -5°C to +85°C (internal)
Circuits protection
Temperature monitoring of
transformers and heat
-
sinks,
inrush
-
c
urrent limitation, mains supply
failure and over-voltage detection, output DC protection, output over current protection
Transducers protection L-DRIVE thermal and over excursion monitoring
Fans 2 temperature dependent speed-controlled axial fans
Indicators LED for Load, Signal, Level (-25 dB, -10 dB, -5 dB), Clip, L-NET, and Mute
Output Connectors
2 x 4-point SpeakON
®
(1/2 and 3/4 output channels) 1 x 8-point CA-COM
®
(all output channels )
L-NET connectors 2 x Fast Ethernet RJ45 (in/out)
ANALOG INPUT
Connectors Input 2 Neutrik
®
female XLR3, IEC 268, ESD protected
Link 2 Neutrik
®
male XLR3, IEC 268, ESD protected
Input impedance 22 kΩ (balanced) Max input level 22 dBu (balanced, THD 1 %) Latency
3.9 ms
Digital conversion
Two cascaded 24 bit A/D converters (130 dB dynamic range)
DIGITAL INPUT
Connectors
Input 1 Neutrik
®
female XLR3, IEC 268, ESD protected
Link
1 Neutrik
®
male XLR
3,
IEC 268
,
ESD protected, e
lectronically buffere
d,
failsafe
relay
USB 1 Mini-B type female USB, reserved for future applications
Supported Standard AES/EBU (AES3) or coaxial S/PDIF (IEC 60958 Type II)
input formats
Sampling frequency
(F
s
)
44.1, 48, 64, 88.2, 96, 128, 176.4, or 192 kHz
Word length 16, 18, 20, or 24 bits
XLR cabling Type Standard XLR cables or AES/EBU certified cables
Maximum length 300 m with AES/EBU certified cables and for Fs ≤ 48 kHz
Input gain Adjustable from -12 dB to +12 dB by 0.1 dB steps
Latency 3.4 ms or 3.9 ms (upon user selection, independent of the input sampling frequency)
Sample Rate Sampling frequency 96 kHz (SRC referenced to the amplified controller’s internal clock)
Converter
Word length 24 bits
Dynamic range 140 dB
Distortion (THD+N) < -120 dBfs
Passband ripple ±0.05 dB (20 Hz-40 kHz, 96 kHz)
AES/EBU to
ANALOG
Switchover conditions
No clock, loss
of
lock, invalid audio [validity bit]
, CRC error, bipolar encoding
error, data slip
fallback Constant delay Yes (upon user selection, independent of input Fs)
Constant level Yes (upon user adjustment of AES/EBU input gain, independent of input Fs)
Revert to AES/EBU Manual user selection

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