Dbx 1231 Equalizer Manuel d'utilisateur Page 6

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IntroduCtIon
Congratulations on your purchase of a dbx graphic equalizer. All dbx graphic equalizers are high performance
multi-functional units designed to deliver all the flexibility and power that professional users demand. We recom-
mend that you take a moment to read through this operation manual. It provides information that will assist you
from system set-up to EQ applications. The 12 Series Equalizers include the following features:
•SwitchableBoost/Cutrangebetween±6dBand±15dB
•Balancedinputsandoutputs
•XLR,BarrierStrip,and1/4"TRSconnectors
•-12dB/+12dBinputgainrange
•18dB/octave40HzBesselLow-Cutfilter
•Chassis/signalgroundliftcapability
•Internalpowersupplytransformer
•Power-offhard-wirerelaybypasswith2-secondpower-updelay
InspeCtIon
Verify that the equalizer’s package contains the following:
•Equalizerunitmatchingserialnumbermarkedonpackage
•ACpowercord
•OperationManual
•RegistrationCard
•Fourrackmountscrewsandwashers
If any of these items are missing please contact dbx customer service at the number provided on the back cover of
this manual.
operatIng Controls
Front Panels
1231 - dual channel 31 band graphic equalizer
1215-dualchannel15bandgraphicequalizer
2
OPERATION MANUAL
1231
Graphic Equalizer
20 25 31.5 40 50 63 80 500400315250 1.6k1.25k1k800 5k4k3.15k2.5k 16k12.5k10k8k6.3k 20k2k630100 125 160 200
RANGE
OUTPUT
LEVEL (dBu)
LOW
CUT
EQ
BYPASS
INPUT
GAIN
dB
-12
0
+12
+/-6
+/-15
CLIP
+18+100-10
RANGE
OUTPUT
LEVEL (dBu)
LOW
CUT
EQ
BYPASS
INPUT
GAIN
dB
-12
0
+12
+/-6
+/-15
CLIP
+18+100-10
0
-15
+15
0
-15
+15
0
-6
+6
0
-6
+6
85-XXXX-X 1231 FRONT ART 7-12-99
RANGE
OUTPUT
LEVEL (dBu)
LOW
CUT
EQ
BYPASS
INPUT
GAIN
dB
-12
0
+12
+/-6
+/-15
CLIP
0
-6
+6
25 40 63 100 160 250 400 16k10k6.3k4k630 1k 1.6k 2.5k
+18+100-10
1215
Graphic Equalizer
85-XXXX-A0 1215 FRONT ART 7-15-99
0
-15
+15
RANGE
OUTPUT
LEVEL (dBu)
LOW
CUT
EQ
BYPASS
INPUT
GAIN
dB
-12
0
+12
+/-6
+/-15
CLIP
0
-6
+6
25 40 63 100 160 250 400 16k10k6.3k4k630 1k 1.6k 2.5k
+18+100-10
0
-15
+15
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