4 equaliser section, Lf lmf hmf hf – Solid State Logic 82S6MC120A User Manual

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5.4 Equaliser Section

Operation

The equalizer included with the Duende PCIe EQ and Dynamics Channel Strip plug-in is a four band parametric EQ with

filters. Based on the XL 9000 K Series EQ circuit, this plug-in includes two distinct EQ curves, one based on the SSL G Series

EQ and another based on the latest version of SSL’s classic E Series EQ.
The G series EQ bandwidth varies with applied gain and so increases the selectivity of the EQ. This EQ type generally works

best at moderate settings, particularly on instruments or vocals as a gentle, corrective EQ. The E series EQ is the

Black Knob’circuit, which has a constant-bandwidth at all gains. This means that it can be particularly useful for

‘surgery EQ tasks’ as it offers relatively narrow Q at relatively low gains. Note – at full boost or cut both curves are identical.

E

±dB

Freq Hz

Freq kHz

Freq kHz

Freq kHz

Q

INPUT

OUTPUT

LF

LMF

HMF

HF

BELL

±dB

±dB

Q

±dB

BELL

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