FCS-966


Constant Q Graphic EQ


Constant Q Filters

The modern generation of graphic eq's

uses the Constant Q topology, pioneered by BSS Audio, which means that the filter width is constant whatever the fader gain setting.

 

Compared to the earlier 'gyrator' style of filters, Constant Q filters provide a smoother and more predictable interaction between adjacent faders and the resulting eq curve more closely resembles the actual fader positions.


    More Gain Control Per Filter

    Each eq fader has +/-15dB of adjustable gain, more than many competitive graphic eq's. The faders are long-throw 45mm types for precision control.

     

    High Pass Filter

    Also provided on the FCS-966 is a sweepable high-pass filter which can be used very effectively to restrict the low-energy output for better amplifier and loudspeaker performance. Stage monitors also benefit from the application of a high-pass filter to remove bass signals e.g. from vocal-only wedges.

     

    Metering

    BSS Audio believes in providing engineers with information, and the FCS-966's 8-segment led meter shows output level and warns of signal clipping within the eq. When the unit is switched to bypass, the meter will read the input level, allowing accurate matching of the 'dry' and equalised signals using the gain control.

     

    Centre Bypass

    When any eq fader is in its centre detent position, the filter is automatically bypassed, for optimum performance.

     

    Input/Outputs

    All the inputs and outputs of the FCS-966 are electronically balanced, with optional transformer balancing. To make installation of the FCS-966 easier, we've provided three differerent interface connectors: XLR-type, 1/4" TRS jack and Phoenix/Combicon screw terminals.

     

    Relay Bypass

    The EQ IN buttons switch the EQ path

    into circuit. When switched out, or power fails, a high-quality relay switches the input signal directly to the output connectors.

     

    Control Descriptions

     

    Faders

    30 EQ filter faders on ISO centres, each with nominal +/-15dB of gain. Positive centre-detent on 45mm long-throw precision faders.

     

    HP Filter

    Sweepable high pass filter, frequency adjustable from OUT (flat) up to 250Hz.

     

    LF Contour

    Smooth shelving filter, +/-6dB of gain at 50Hz

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