SPL Track One Channel Strip - Manual (Page 15)

15 Track One
EQ ON
The ON button inserts the equalizer module into the signal path. The input signal comes from
the compressor.
Tip: Deactivating the equalizer module at the beginning of a recording can avoid irritations.
Otherwise and especially with intensive EQ settings tonal changes could occur immediately.
LMF
The center frequency of the half-parametric bass filter is set with the LMF control (low/mid
frequencies).
The adjustable frequency range lies between 30 Hz and 700 Hz so that this filter covers a range
of about 4.5 octaves, allowing it to be used from the deepest bass to the lower mid range.
This together with the MHF filter ensures that the entire frequency spectrum is covered.
LMF -/+
The LMF-/+ control determines the boost or cut of the LMF filter; the maximum values lie
between +/- 14 dB. The LMF filter also operates to the proportional-Q-principle, in other words
the bandwidth is dependent on the selected boost or cut. This filter characteristic permits a
musically more sensible processing of the frequency spectrum than with constant-Q filters:
if a more thorough setting has been chosen this will lead to far preciser definition of the
frequency range to be processed. This in turn minimizes influences from adjacent ranges.
The boost or cut values, in relation to the bandwidth, lie somewhat higher than with the MHF
filter. The bandwidth is therefore narrower at maximum boost than with the MHF filter for even
more precise filtering. The exact curve of the LMF filter is shown in diagram 2 on page 20.
The LMF filter can be applied in many ways. Examples are; to accentuate the fundamental
sound of a voice, to cut “boom” frequencies and for placement of bass emphasized instru-
ments during recording or subsequently when mixing etc.
MHF
The center frequency of the semi-parametric mid/high frequency filter is set with the MHF
control.
The frequency range can be set between 680 Hz and 15 kHz so that this filter covers a range of
4.5 octaves and can be equally employed in the lower mid as well as the high range.
This together with the LMF filter ensures that the entire frequency spectrum is covered. >
Control Elements
Equalizer