BSS Audio FCS-960 Owner's Manual - Manual (Page 4)

4
FCS-930/960
1.0 Introduction
Introduction
The FCS-930 and FCS-960 are dual mode graphic equalisers; each
channel featuring 30 filter bands spaced at the standard one third octave
ISO frequency centres spanning 25Hz at the low frequency end up to
20kHz at the high frequency end. The FCS-930 is a single channel unit,
while the FCS-960 has two independent channels that may be used as a
stereo pair.
The filter topology used is not based on the more common gyrator
principle, butrather on a band pass multiple feedback technique which
makes less demands on the integrated circuits at high frequencies. The
resulting excellent sounding circuit also offers good long term stability
and a constant Q response. This is also configurable to allow you to
select the optimum response shape, dependent on whether you wish to
provide gentle program sweetening, or precise single frequency tuning,
such as notching room resonances and feedback suppression.
Some of the features available within the FCS-930/960 are:
• Long 45mm fader travel for precise adjustment and control.
• Centre detented fader with electrical centre tap for true 0dB setting.
• Advanced constant Q filter topology for improved accuracy at all
fader settings and excellent sonic transparency. Selectable normal or
fine filter response.
• Continuously variable high pass filter, with by-pass switch.
• Gain control for system loudness normalisation.
• Peak clip LED to give advance warning of signal overload.
• Channel bypass selection and power fail bypass by relays.
• Electronically balanced inputs and outputs.
• Proprietary design fader knob provides positive feel with ample finger
room, virtually eliminates visual parallax errors even under low
ambient light conditions
• Optional internal input and output transformer balancing.