4.7Equaliser Section, 4.8Output Section, Page | Solid State Logic 82S6XL090A

XLogic E Signature™ Channel Owner’s Manual

4.7Equaliser 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.

GAIN

LMF

GAIN

HMF

GAIN

BELL

BLK

DYN

BELL

S/C

–

KHz

100

300

1.5

4.5

2.0

OUT

450

2.5

1.5

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.

4.8Output 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

MTR

INPUT

-20 +20