The upper (or lower for the highest Xover) frequency and roll-off slope are adjusted in the Band Controls or directly in the display, the latter from 6dB/octave to an impressively steep 96dB/octave.
In Xover mode, a band applies dynamics processing to the input signal within its covered frequency range, like a regular multiband compressor/expander. As for the keying signal, rather ingeniously, the Source menu not only permits selection of the band being processed itself, the wideband signal or an external source as the sidechain, but also the input of any other Xover band.
Then it’s on to the pop-out Sidechain panel, wherein up to 50ms of Lookahead can be dialled in to hone transient handling and the same L/R/ M/S balancing parameters found in the Band Controls, as well as the degree of channel linkage, can be tweaked to tailor the response in terms of stereo behaviour. In between those, the mid band serves as parametric peaking or band-pass filter. The low and high bands are switchable between resonant low/high-pass and high/low shelving behaviour, with 6-96dB slopes for the filters and up to +/-24dB gain for the shelves. Many compressors and limiters offer processing of the sidechain signal before it hits the detection circuit in order to alter the dynamic response of the effect ‘at source’, but Multiplicity goes considerably further than most in this regard.įirst of all, clicking the SC EQ button flips the bottom left panel from showing the transfer curve and dynamic response to hosting the controls of a capable three-band EQ.