Graphic equalisers are found in just about every sound application, from room contouring to feedback control and general audio sweetening.
Traditionally, much general eq'ing takes place on the faders alone, but this restricts the use of the faders at each end of the scale for further precision eq work. So we provided the Opal FCS-966 with separate LF and HF contour filters which can change an overall sound balance without disturbing a detailed room or loudspeaker response.
These filters are very musical gentle boost and cut shelving filters which can be used to add (or remove) room effects that change with temperature, audience numbers or humidity.
All these effects can be easily made without disturbing the critical fader settings already made.
Specifications
| Chassis | 3U rack spaces |
| Input Connectors | XLR, TRS, Combicon (2 each) |
| Output Connectors | XLR, TRS, Combicon (2 each) |
| EQ Bands | 30 per channel (60 total) |
| Filter Width (Q) | Constant-Q |
| EQ Gain | +/- 15dB per band, plus - inf to +10dB overall |
| Metering | 8-segment LED per channel |
| Bypass Switch |  |
| High-Pass Filter | Sweepable, flat to 250Hz |
| Low Frequency Contour | Smooth shelving filter, +/- 6dB at 50Hz |
| High Frequency Contour | Smooth shelving filter, +/- 6dB at 14kHz |
