Appendix
Equaliser
This is a four band equaliser that can be switched between two different sets of curves; one based on SSL’s ‘02’ (‘Brown Knob’) EQ and the other based on the latest version of the classic ‘242’ E Series (‘Black Knob’) EQ. High and low pass filters are also available.
HF Band controls: |
|
Frequency | Variable from 1.5kHz to 16kHz |
Gain | Variable between ±15dB (‘02’) |
| Variable between ±18dB (‘242’) |
‘Q’ (on ‘BELL’ setting) | 0.8 (‘02’) |
| 1.3 (‘242’) |
HMF Band controls: |
|
Frequency | Variable from 600Hz to 7kHz |
Gain | Variable between ±15dB (‘02’) |
| Variable between ±18dB (‘242’) |
‘Q’ | Variable from 0.5 to 2.5 (‘02’) |
| Variable from 0.5 to 4 (‘242’) |
LMF Band controls: |
|
Frequency | Variable from 200Hz to 2.5kHz |
Gain | Variable between ±15dB (‘02’) |
| Variable between ±18dB (‘242’) |
‘Q’ | Variable from 0.5 to 2.5 (‘02’) |
| Variable from 0.5 to 4 (‘242’) |
LF Band controls: |
|
Frequency | Variable from 30Hz to 450Hz |
Gain | Variable between ±15dB (‘02’) |
| Variable between ±18dB (‘242’) |
‘Q’ (on ‘BELL’ setting) | 0.8 (‘02’) |
| 1.3 (‘242’) |
Filter controls: |
|
Low Pass Frequency | 3kHz to 16kHz |
Low Pass Slope | 12dB/octave |
High Pass Frequency | 20Hz to 350Hz |
High Pass Slope | 12dB/octave (‘02’) |
| 18dB/octave (’242’) |
Measurement Conditions
Signal applied to Line Input and measured at Output. EQ switched In. All EQ controls set centre as appropriate.
THD + N | < 0.05% at +20dBu 1kHz |
Frequency Response | ±0.25dB from 20Hz to 20kHz |
Output Headroom | > +26dBu at onset of clipping |
Noise | < |
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