Overview
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.