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respond less to the bass, allowing it to do its job of controlling the vocals.
On the other hand, you might want to have a vocal or a drum beat
deliberately "duck" the rest of the mix for special effect. Tune the
equalizer to the frequencies of the instrument you want to emphasize, then
adjust the 'COMPRESS' control so that the compressor only operates
when those frequencies are present.
Note that none of this external equalization is audible as such.
Troubleshooting
1) No Power (no lights work)
Is the power supply plugged in (both ends)?
Is the mains power on?
Has a mains fuse blown?
2) The Inputs don't work
Is the source connected to the jack inputs on the back of the unit?
Is the 'Input Gain' control turned up?
3) The compressor doesn't work
Is the 'Comp' switch in (LED on)?
Is the 'Compress' control turned up enough?
Is there enough signal, as set by the 'Input Gain' control, to drive the
compressor?
Is the 'Slope' control turned up enough?
4) Too little or too much compression
Turn the 'Input Gain' control up or down respectively, to adjust the
signal level to the compressor.
Turn the 'Slope control up or down respectively.
Technical Specification
Input impedance
Pre-amp overall gain
Common mode rejection
Equivalent input noise
Distortion
Frequency response
Maximum input before clipping
Headroom before clipping
Compression threshold
Compression ratio
Compressor attack time
Compressor release time
GR Hold threshold
Stereo Width range
GR Meter
VU Meter
Nominal output levels
Output impedance
Output Level switch
Noise Floor
Power supply
Power consumption
Mechanical
Weight
17
external
Line: 20kohm
-6dB to +15dB
70dB
-95dBu (unweighted)
0.001% (below Compressor
threshold)
10Hz to 70kHz (-3dB)
+19.5dBu
+19.5dBu
-6dBu to +22dBu (variable)
1:1 to 10:1
(variable)
1 msec to 100 msec
(adaptive)
0.1 sec to 3 sec (adaptive)
-10dBu to -50dBu (variable)
Mono / stereo / wide stereo
(variable)
8 segment bargraph
8 segment bargraph
+4dBu/-10dBv
75ohm
12dB attenuation
-95dBu (typical, with 0dB
Input and Make Up gain)
12V ac mains adaptor
12W
220W x 44H x 180D (overall)
1 kilo
5) The Stereo Width doesn't work
Is the 'ON' switch in (LED on)?
Is only one input connected?
Is the programme material mono?
6) Too much noise
Is the 'Input Gain' control too high (eg: the input signal is too small)?
Is the noise already present in the input signal? (Try removing the
input).
Is the 'Make Up Gain' control too high (eg: when lots of compression is
being used)?
Try using the GR Hold function to compensate for compressor-
accentuated noise.
7) Sounds distorted
Is the 'Input Gain' control too high?
When using the compressor, is the Release control set too low?
Is the GR Hold on with the control set too low?
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