Solid State Logic 82S6XL090A - Manual (Page 16)

Page 12
XLogic E Signature™ Channel Owner’s Manual
4.7 Equaliser Section
The XLogic E Signature Channel unit equaliser section defaults to the original ‘Brown Knob’ circuit that
was standard on all early production E Series consoles. The two parametric mid-band sections feature
SSL’s classic logarithmically symmetric design that ensures that the ±3dB up/down points retain the same
musical interval from the centre frequency regardless of frequency and amplitude settings. The two
shelving sections are traditional 6dB/octave designs with an option for a fixed Q parametric response
(Bell). The ‘02’ EQ, to give it its correct name, was used on countless recordings and mixes in the early
eighties. It is offered here incorporating a switchable version of a field modification that was carried out
on a number of consoles – the CT OUT switch defeats the inherent non-interactive nature of the design
and introduces subtle control interactions similar to those found on earlier parametric units. It also offers
a different gain law with increased resolution in the critical initial boost or cut area. This function can be
selected individually for each band.
In 1983 a new ‘242’ EQ circuit was developed in conjunction with the legendary George Martin for the first
SSL console to be installed in AIR studios. The ‘Black Knob’ EQ, as it became known, featured enhanced
cut and boost ranges (±18dB instead of ±15dB) together with a different control law and a steeper
18dB/octave high pass filter for tighter control of low frequencies. It is this design which is retained today
as the ‘E Series’ EQ option of the SL and XL 9000 Series consoles and the XLogic Channel unit. The design
is enhanced in this version via the CT OUT option for additional tonal variations and is activated by
pressing the BLK switch.
As mentioned above, the EQ section has some master function buttons associated with it:
EQ IN – Switches the EQ section into circuit.
BLK – Switches the EQ from ‘Brown Knob’ operation to ‘Black Knob’ operation – see above.
DYN SC – Switches the EQ section into the sidechain of the Dynamics section. The Filter section can be
switched independently of the EQ section. If both Filter and EQ sections are assigned to the dynamic
sidechain the Filter section precedes the EQ. Section 5 describes the routing combinations in more detail.
4.8 Output Section
The Output section consists of a centre indented, ±20dB output gain
control and a 7-segment LED meter. Normally the meter reads the output
of the channel, but selecting MTR INPUT will meter the signal
immediately post the input section.
The blue POWER LED indicates that the unit is powered (what else?).
The ADC LOCK LED is a bi-colour LED which indicates that the
(optional) ADC card is locked to an external clock. It will illuminate
yellow to indicate external lock, red for internal lock.
OUTPUT GAIN
POWER
ADC LOCK
-24 -12 0 6 12 18 24
+20 -20
MTR
INPUT
LF LMF HMF HF GAIN GAIN GAIN GAIN
Hz KHz Q KHz Q KHz
30 450 .2 2.5 .6 7 1.5 16
50
100 300
.3
.8 1.5
2.0 .8
1.5 4.5
2
5 10
14
+ – + – + – + –
BELL
CT
OUT
CT
OUT
CT
OUT
CT
OUT
BELL
DYN
S/C
EQ
IN
BLK