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12
Sample Settings
Try these as some starting points. Remember to adjust the 'INPUT' control to suit your amp and guitar, before switching on the compressor.
In each case adjust the 'OUTPUT' control as required, so that there is no change in volume as you switch the compressor on and off.
OPTICAL COMPRESSOR
5
5
5
4
6
4
6
4
3
7
3
7
3
2
8
2
8
2
1
9
1
9
1
0
10
0
10
0
INPUT
SLOPE
OUTPUT
5
5
5
4
6
4
6
4
6
3
7
3
7
3
7
2
8
2
8
2
8
1
9
1
9
1
9
0
10
0
10
0
10
COMPRESS
ATTACK
RELEASE
COMPRESS
Clean compressor sound with mild
control of dynamics.
These examples were derived using a Laney LT5 5 watt tube amp and a
Gibson SG. Settings will vary with different guitars and amplifiers, so
experiment to find what works best for you!
Troubleshooting
1) No Power (FOOTSWITCH LED doesn't light up)
Is the power supply plugged in (both ends)?
Is the mains power on?
Has a mains fuse blown?
There is a thermal, self-resetting fuse inside the floorQ. Try
disconnecting the power supply, waiting 5 minutes then trying again.
2) The Input doesn't work
Is the guitar connected to the input jack?
Is the 'INPUT' control turned up enough?
3) The compressor doesn't work
Is the FOOTSWITCH on (LED on)?
Is the 'COMPRESS' control turned up enough?
Is there enough signal, as set by the 'INPUT' control, to drive the
compressor?
Is the 'SLOPE' control turned up enough?
4) Too little or too much compression
Turn the 'INPUT' control up or down respectively, to adjust the
signal level to the compressor.
Turn the 'SLOPE' control up or down respectively.
5) Too much noise
Is the 'INPUT' control too high (eg: the input signal is too small)?
Is the noise already present in the input signal? (Try unplugging the
guitar).
Is the 'OUTPUT' control too high (eg: when lots of compression is
being used)?
6) Sounds distorted
Is the 'INPUT' control too high?
When using the compressor, is the 'RELEASE' control set too low?
13
OPTICAL COMPRESSOR
5
5
6
4
6
4
6
7
3
7
3
8
2
8
2
9
1
9
1
10
0
10
0
10
INPUT
SLOPE
5
5
4
6
4
6
3
7
3
7
3
2
8
2
8
2
1
9
1
9
1
0
10
0
10
COMPRESS
ATTACK
Q
COMPRESS
Turning up the 'SLOPE' gives clean
compressor sustain.
5
5
4
6
4
6
7
3
7
3
8
2
8
2
9
1
9
1
0
10
0
10
OUTPUT
INPUT
5
5
4
6
4
6
7
3
7
3
8
2
8
2
9
1
9
1
0
10
0
10
RELEASE
COMPRESS
Q
COMPRESS
Driving the input a bit harder with
very short attack and release times,
gives a crunchy sound, still with
control over volume.
Technical Specification
Input impedance
Pre-amp gain
Equivalent input noise
Distortion
Frequency response
Maximum input before clipping
Headroom before clipping
Compression threshold
Compression ratio (slope)
Compressor attack time
Compressor release time
Output gain
Nominal output level
Output impedance
Noise Floor
Power supply
Power consumption
Mechanical
Weight
OPTICAL COMPRESSOR
5
5
4
6
4
6
7
3
7
3
7
8
2
8
2
8
9
1
9
1
9
0
10
0
10
SLOPE
OUTPUT
5
5
4
6
4
6
4
7
3
7
3
8
2
8
2
9
1
9
1
0
10
0
10
0
ATTACK
RELEASE
COMPRESS
Q
Adds long sustain to solo distortion.
Also works with a clean guitar for a big
compressor sound
country pick with no pumping and
breathing.
6.8Mohm
0dB to +20dB (variable)
-94dBu (unweighted)
0.001% (below Compressor
threshold)
15Hz to 20kHz (-3dB)
+19.5dBu
+19.5dBu
-6dBu to +22dBu (variable)
1:1 to 10:1
1 msec to 100 msec (adaptive)
0.1 sec to 3 sec (adaptive)
0dB to +20dB (variable)
0dBu
100ohm
-94dBu (typical, with 0dB
Input and 0dB Output gain)
9V to 18V, ac or dc
(12V ac adaptor supplied)
4W
106W x 65H x 154D (overall)
1 kilo
OPTICAL COMPRESSOR
5
5
5
4
6
4
6
4
6
3
7
3
7
3
7
2
8
2
8
2
8
1
9
1
9
1
9
0
10
0
10
0
10
INPUT
SLOPE
OUTPUT
5
5
5
6
4
6
4
6
7
3
7
3
7
8
2
8
2
8
9
1
9
1
9
10
0
10
0
10
ATTACK
RELEASE
Q
COMPRESS
–
like a controlled
(variable)
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