LA AUDIO BCL-20 DUAL-STEREO BROADCAST COMPRESSOR-LIMITER

Discontinued

770.21 725.83 incl. GR VAT

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The BCL20 is a broadcast quality dual Compressor/Limiter with a built in De-Esser function, designed for FM transmitter protection and disc mastering as well as PA and studio applications. The unit may be operated as two independent channels or linked for stereo programme processing. The BCL20 offers full control over Threshold, Ratio, Attack, Release and […]

 

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The BCL20 is a broadcast quality dual Compressor/Limiter with a built in De-Esser
function, designed for FM transmitter protection and disc mastering as well as PA
and studio applications. The unit may be operated as two independent channels or
linked for stereo programme processing. The BCL20 offers full control over Threshold,
Ratio, Attack, Release and Gain make up. Each channel has two high resolution
twelve segment LED bargraphs, one to display gain reduction and another which can
be switched to display input or output level. The I/O meter can be switched between
Peak or VU response. A unique feature of the BCL20 is the inclusion of control over the
detection characteristics, which can be mixed between Peak and RMS levels. This
enables the compressor to be made sensitive to high energy transients or to wider
programme modulations. The De-Ess function is activated by means of a single switch
which inserts a slew rate sensitive filter into the side chain to produce frequency conscious
compression in accordance with FM transmission or disc mastering pre-emphasis. A rear
panel jack insert point allows the connection of an external equaliser in the sidechain for other
frequency conscious processing applications. The BCL20 is equipped with high impedance
balanced inputs and transformer balanced outputs on XLRs. The output stage features a unique
Transformer Distortion Cancellation circuit, which reduces transformer distortion to negligible
levels. The BCL20 is manufactured in accordance with directives encompassed within the ‘CE’
regulations particularly those concerned with RFI protection.
 
Main Features
Broadcast specification
Low Noise and Distortion
Dual level sensing in Stereo Mode
RMS/Peak detection mix feature
Integral De-Esser function
Ultra fast 1mS peak limiting
High resolution input/output and Gain reduction metering
Transformer balanced outputs featuring unique Distortion Cancellation circuitry
Switch status LEDs
 
SPECIFICATIONS
Frequency Response 20 Hz to 20 kHz +/- 0.5dB
Signal to Noise Ratio + 4 dBu Input, + 4 dBu Output -94 dB
Input Impedance 20k Ohms balanced
Output Source Impedance 20 Ohms
Output Load Impedance 600 Ohms to infinity
Maximum Input Level + 20 dBu
Maximum output Level 600 Ohms Load, 1 kHz + 20 dBu
Total Harmonic Distortion (THD)
+ 4 dBu Output,
1 kHz, 10 dB compression 0.07 %
1 kHz, by-pass 0.01 %
Intermodulation Distortion 0.01 %
Compression Ratio
Continously variable
from 2 : 1 to 20 : 1
Attack Time (Peak)
Continously variable from 0.1 to 70 millisec.
Release Time (Peak)
Continously variable from 100 millisec to 3 sec.
Attack Time (RMS)
Program dependant Typ. 12 ms for 12 dB.
Typ. 4 ms for 24 dB.
Release Time (RMS)
Program dependant
Typ. 120 ms for 12 dB
Typ. 240 ms for 24 dB
Mains power Consumption (115/220 VAC, 50-60 Hz) 6 Volts-amps
Meter Calibration 0 Vu = + 4 dBu
Maximum Gain Reduction more than 50 dB
DS Action 12 dB at 8 kHz
Input Connector XLR 3 pin balanced
Output Connector XLR 3 Pin balanced
Dimensions 483mm W x 190mm D x 44.5mm H
19“W x 7.5“D x 1.75“H
Weight 3.9kg, 8.6lbs
Shipping Weight 4.8kg, 10.6lbs
Temperature Range
Operating 0C to +50C
Storage -30C to +75198>C

Note:
In these specifications, 0 dBu is referenced to 0.775 V RMS

Weight 4.80 kg

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