5
4
48V PHANTOM POWER switch
– feeds 48V power to the microphone XLR
connector. Most condenser microphones require phantom power to operate.
IRON switch
– selects transformer coupling of the Mic (XLR) input.
The LED lights when active.
PAD switch
– selects 20dB attenuation of the Mic (XLR) input.
The LED lights when active.
LINE switch
– selects the Line and INSTRument (1/4” jack) inputs instead
of the Mic (XLR) input. The LED lights when active.
Ø switch
– reverses the phase of all inputs.
INSTRument input
– high impedance input. Plugging in here overrides
anything plugged into the Line input.
PREAMP GAIN
– sets the amount of audio amplification. Too little gain and
the sound will be too quiet; too much and the signal could become distorted.
PEAK LED
– lights 6dB below clipping.
HPF - “high-pass filter”
– Mainly for use with microphones, this helps
remove stage rumble, handling noise and “pops”. The LED lights when active.
COMPRESS
– sets the level of signal (or “Threshold”) above which the
signal starts to be compressed.
SLOPE
– sets the compression ratio applied to signals above threshold.
ATTACK
– sets how quickly the compressor responds to peaks above
threshold.
RELEASE
– sets the time taken for the signal to return to its normal size
after compression. In general, the longer the time, the less obvious the
compression.
MAKE UP GAIN
– restores the level of the signal after compression.
COMP switch
– turns the compressor on. The LED lights when active.
LF
– controls the volume of Low Frequencies or “Bass” in the audio
spectrum. 15dB of boost or cut is available at the selected frequency.
LF FREQ
– sets the frequency at which the LF control operates,
anywhere from 40Hz to 650Hz.
MID
– controls the middle frequencies in the audio spectrum.
15dB of boost or cut is available at the selected frequency.
MID FREQ
– sets the frequency at which the MID control operates,
anywhere from 300Hz to 5kHz.
HF
– controls the volume of the High Frequencies or “Treble” in the audio
spectrum. 15dB of boost or cut is available at the selected frequency.
6kHz switch
– sets the frequency at which the HF control operates,
in for 6kHz, out for 12KHz. The LED lights when in.
EQ switch
– turns the equalizer on. The LED lights when active.
OUTPUT GAIN
– the volume control or “Fader” for the output of the twinQ.
PEAK FSD LED
– lights 6dB below clipping. “FSD” means “Full Scale
Digital” and this LED also warns you if the Digital Interface is about to be
overloaded.
METER
–
analogue movement shows output signal level (VU), preamp
signal level or the amount of gain reduction (GR) in dB, depending on the
settings of the Meter switches. The momentary “PRE” switch overrides
both “VU” and “GR” metering.
COMP LINK
–
for stereo work, Channel 1’s “Compress”, “Attack” and
“Release” control both channels (the corresponding Channel 2 controls
are redundant). This avoids stereo image shifts. All other controls still
operate independently on both channels and must be set the same for
correct stereo balance.
‘EXT CLK’ LED
–
illuminates when the twinQ’s digital output is
successfully locked to an external word clock.
+4dBu/-10dBv switch
– selects the operating level of the 1/4” jack output,
either to the profes4dBu level, or to the -10dBv semi-pro level.
twinQ Controls at a Glance
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