Front Panel Features; Signal Level; Graphic Eq Section; Gain Control - Klark Teknik Square One Graphic Operator's Manual

Front panel features

The Klark Teknik Square ONE Graphic is a dual-channel, 30-band, third octave analogue graphic equaliser. In
addition to the graphic equaliser itself, high and low pass filters are provided per channel and an equaliser in/
out switch to bypass the effect of the equaliser and filter stages. Power is supplied to the unit via the rear
panel; an LED on the front panel provides power on/off indication.

Signal level

The Square ONE Graphic provides a SIGNAL and a CLIP LED per channel for the purpose of level metering.
The levels are as follows:
• SIGNAL (Green):
• CLIP (Red):
SIGNAL LED (green): illuminates to show the input signal has exceeded -40dBu. The signal is pre-EQ (but
post-gain control).
CLIP LED (red): illuminates to show the maximum output level of the unit has been achieved, that is,
A
+20dBu has been exceeded, and the unit has entered clipping. This LED is sourced post-EQ (and post-gain
SIGNAL CLIP
control) such that internal clipping due to excessive EQ, that is, if a high input level is further boosted by the
B
use of EQ, will also be shown.

Graphic EQ section

The graphic EQ section of the Square ONE Graphic features long throw 45 mm faders to allow fine
+ 12
adjustment of each frequency band. Each fader has a centre detent ('click stop') to denote the 0dB (unity
gain of the band) point of the scale. The Square ONE Graphic uses standard ISO third octave standard
frequency centres.
The range of the faders is ±12dB. Placing the fader of any band at the extreme upwards position will apply
12dB gain to the frequencies in that band. While, conversely, placing the fader of any band at the extreme
downwards position will apply 12dB attenuation to the frequencies in that band.
-
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Gain control

The gain control provides continuous adjustment of the channel gain from minus infinity (off) to +6dB with a
0
GAIN
centre detent at 0dB (unity gain). When using EQ with large amounts of cut or boost, it may be necessary to
use the gain to make up or attenuate the signal.
- 6
Square ONE Graphic
-40dBu
+20dBu
13
Front panel features