Dbx 676 Tube Microphone Preamp Channel Strip

Owner’s Manual - Page 19

For 676.

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17
676
Setting The Compressor/Limiter
1� Start by setting all settings as shown below:
PEAK
EQ
ENABLE
COMP/LI M
ENABLE
NARROW
CONTOUR
SIDECHAIN
ENABLE
OVER EASY
DIGITAL
OUTPUT
POWER
|
20dB
PAD+48V
POLARITY
INVERT
80 Hz
LOW CUT
+
0
PEAK
LIMIT
GAIN
dB
+55
+25 +50
+40
-
POST TUBE
ATTENUATION
dB
-
0
-30 -5
-15
LOW
dB
-15 +15
0
MID
dB
-15 +15
0
HIGH
dB
-15 +15
0
AUTO
RELEAS E
dB/sec
4k 10
400
1�5k 70
ATTACK
dB/msec
400
80
200 10
1
LIMITE R
dBu
RED: 96kHz
GREE N: 48kHz
YELLOW: 44�1 kHz
-4
+2 +18
+10
OFF
THRESHOLD
dB
-40
0
+20
-10
-20
-30 +10
RATIO
1:1 :1
1�5:1 3:1
2:1
1�2:1 8:1
MAKEUP
GAIN
dB
-20 +20
0
-10 +10
INSTRUMENT INPUT
ENABLE
CLASS “A” VACUUM TUBE WITH HIGH VOLTAGE GAIN
METER S ELECTION
INPUT OUTPUT G�R�
FREQ
Hz
1k
100 8k
200 2k
2� While monitoring the source signal, lower the THRESHOLD control until the threshold meter begins bouncing back and
forth between the green - and red + LEDs.
3� Adjust the MAKEUP GAIN control so that you can adequately hear the signal you are processing.
4� Raise the ATTACK control until the desired amount of attack is heard.
5� Raise the RELEASE control until the compressor’s release sounds musical in context of the song.
6� Lower the RATIO control until the desired amount of compression is achieved.
7� Adjust the MAKEUP GAIN control to match the amount of gain reduction being applied. Or audition the compressed vs.
bypassed signals by toggling the COMP/LIM ENABLE button and set it so that the two signals are closely matched.
8� If the signal is ‘pumping’ undesirably or you’re recording an instrument with a lot of low-frequency energy, such as a bass
guitar, try engaging the CONTOUR button. Toggle it off and on and select the position that sounds most appropriate for
the application.
9� Toggle the AUTO button on and off and select the position which provides the best results.
10� If you want the compression to sound more subtle and natural, try engaging the OVEREASY button – this will soften the
knee of the compressor. Note that this may also lower the output signal level, so you may have to adjust the MAKEUP
GAIN
control to compensate. If you determine that a hard-knee compressor suits the application better, leave the
OVEREASY button disengaged.
11� If you would like to also limit the signal, slowly lower the LIMITER control until the LIMIT LED begins to light occasionally.
If you wish to use only the limiter, set the compressor’s RATIO control to 1:1. This will prevent the compressor from
activating and allow only the limiter to be used.
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