Q2 OPERATION AND MAINTENANCE MANUAL 9601 21
EQUALISER
The Q2 Equaliser is a four-band design, all bands having sweep
frequency adjustment. Each band consists of two dual-concentric
pots. The upper pot is the gain adjustment, the lower control being
the frequency adjustment. The two mid-range sections each have a
switch-selectable Q.
HF
Shelving section, providing +/-15dB of gain with an adjustable
frequency range of 2kHz to 20kHz.
HI MID
Peaking section, providing +/-15dB of gain, at frequencies from
525Hz to 15kHz.
Q
Selects the Q to be 0.9 or 1.8. The Q is 0.9 when the switch is in
the ‘down’ position.
LO MID
Peaking section, providing +/-15dB of gain, at frequencies from
80Hz to 2.2kHz.
Q
Selects the Q to be 0.9 or 1.8. The Q is 0.9 when the switch is in
the ‘down’ position.
LF
Shelving section, providing +/-15dB of gain with an adjustable
frequency range of 20Hz to 500Hz.
EQ IN
The EQ switch inserts the entire equaliser circuit into circuit.
When switched out, the equaliser is totally bypassed, keeping the
signal path to a minimum. The led in the switch illuminates when
the EQ is in circuit. The Insert point is normally located after the
EQ section, but a switch located on the module pcb allows the
insert to be pre-EQ.