MICROPHONE INPUTS
Connectors:
Female XLR Pin 2 hot
Type:
Electronically balanced/unbalanced
Impedance:
1.70 k½
Optimum Microphone Impedance: 150 - 200 ½
Maximum Input Level:
> +13 dBu, or +33 dBu with 20 dB pad
engaged
CMRR:
> 115 dB at 60 Hz, > 110 dB at 1 kHz, >
75dB at 10 kHz
LINE INPUTS
Connectors:
Female XLR Pin 2 hot and TRS 1/4Ó
Type:
Electronically balanced/unbalanced
Impedance:
20.1 k½ nominal, or 470 k½ with rear-panel
INST switch engaged
Maximum Input Level:
> +30 dBu, or +22 dBu with rear-panel
INST switch engaged
OUTPUTS
Connectors:
Male XLR Pin 2 hot and TRS 1/4Ó
Type:
Servo-balanced/unbalanced, RF filtered
Impedance:
Balanced 120½, unbalanced 60½
Maximum Output Level: +21.5 dBu, balanced or unbalanced
INSERT
Connectors:
TRS 1/4Ó
Type:
Impedance balanced/unbalanced (SEND),
electronically balanced/unbalanced
(RETURN)
Impedance:
100½ bal./50½ unbal. (SEND), 20k½
(RETURN)
Nominal Send Level:
+4 dBu
Nominal Return Level:
+4 dBu
EQUALIZER
LOW Frequency:
80 Hz, shelving filter
HIGH Frequency:
12 kHz, shelving filter
MID Frequency:
Sweepable from 100 Hz to 8 kHz,
bandwidth 1.5 octaves (WIDE) or 0.5
octaves (NARROW)
Gain (all bands):
Sweepable from -15 to +15 dB.
COMPRESSOR
Treshold range:
-40dBu to +20dBu
Ratio:
1:1 to °:1
Threshold Characteristic:
Selectable OverEasy¨ or hard knee curves
Attack/Release Characteristic:
AutoDynamicª
Attack/Release Modes:
Selectable Manual or Auto
Manual Attack Time:
Scalable program-dependent. Typically
3dB/ms to .04dB/sec
Manual Release Time:
Scalable program-dependent. Typically
250dB/sec to 5dB/sec
Auto Attack Time:
Program-dependent. Typically 15ms for
10dB, 5ms for 20dB, and 3ms for 30dB
Auto Release Time:
Program-dependent. Typically 125dB/sec
Output Gain:
-15 to +15dB
PeakPlus LIMITER
Type:
Two-stage proprietary
Threshold Range:
+4 dBu to >+ 22 dBu (off)
Ratio:
°:1
Stage 1 Attack and Release Time: Zero
Stage 2 Attack Time:
Program-dependent, typically < 5ms
Stage 2 Release Time:
Program-dependent, typically 22dB/sec
SYSTEM PERFORMANCE
DRIVE Control Range:
+10 dB to +60 dB
LEVEL Control Range:
-15 dB to +15 dB
0.5 dB Bandwidth:
15 Hz to > 90 kHz +0/-0.5 dB
Frequency Response:
<10 Hz to >200 kHz +0/-3.0 dB
EIN:
Typically -126 dBu, 150½ source
impedance, unweighted, 20 Hz to 20 kHz
measurement bandwidth
THD + Noise:
0.04% typical at +0 dBu out, 1kHz, 33 dB
gain
3.5% typical at +21 dBu out, 1kHz, 35 dB
gain
Deviation From Linear Phase:
< 20 degrees, 20 Hz to 20 kHz.
Interchannel Crosstalk:
Typically -98 dB, 20 Hz to 20 kHz.
POWER SUPPLY
Operating Voltage:
100V, 120V, or 220-240VAC 50/60 Hz.
Power Consumption:
30 Watts maximum.
Fuse:
100V: 315mA 250V Slow Blow 5mm X
20mm
120V: 315mA 250V Slow Blow 5mm X
20mm
220-240V: T160 mA 250V 5mm X 20mm
Mains Connection:
IEC 320 Receptacle
PHYSICAL
Dimensions:
3.5" H X 19" W X 8" D
Weight:
12 lbs (5.5 kg)
Shipping Weight:
13 lbs (5.9 kg)
Note: 0 dBu = 0.775V RMS.
VACUUM TUBE PREAMP / COMPRESSOR
576
SHAPE
DITHER
576
Vacuum Tube
Preamp
Compressor
DRIVE
dB
-10
+15
+25
(LINE 0dB)
+60
+30
LOW
dB
-15
0
+15
PHASE
LOW CUT
+48V
MID
dB
-15
0
+15
FREQUENCY
dB
100
200
1k
8k
4k
NARROW
HIGH
dB
-15
0
+15
LINE
INSERT
EQ
LEVEL
dB
-15
0
+15
PeakPlus
THRESHOLD
dB
0
+5
+10
Off
+20
+15
PAD
Off: None
Off: None
Green: TPDF Green: Shape 1
Red: SNR
2
Red: Shape 2
TYPE IV
CONVERSION SYSTEM
INSERT
LEVEL
METER SOURCE
DRIVE
LEVEL
OUTPUT
LEVEL
INSERT
LEVEL
METER SOURCE
DRIVE
LEVEL
OUTPUT
LEVEL
LIMIT
PEAK
PREAMP
20
10 7 5 3
0
3
+
-
¨
DECIBELS
-15
-20
-10
-25
-5
-30
0
DRIVE
dB
-15
0
+15
THRESHOLD
dB
-40
-30
-20
0
0
-
-10
+
+10
+20
CONTOUR
BYPASS
SC ENABLE
RATIO
1:1
1.2:1
1.5:1
2:1
3:1
6:1
∞
:1
ATTACK
dB/mSec
3
1
.35
.04
.15
OverEasy
RELEASE
dB/Sec
250
125
12.5
50
5
UNLINK
AUTO
LEVEL
dB
-15
0
+15
PeakPlus
THRESHOLD
dB
0
+5
+10
Off
+20
+15
SC MON
LIMIT
PEAK
COMPRESSOR
20
10 7 5 3
0
3
+
-
¨
DECIBELS
-15
-20
-10
-25
-5
-30
0
GAIN
REDUCTION
METER SOURCE
DRIVE
LEVEL
OUTPUT
LEVEL
dbx engineers are constantly working to improve the quality of our products.
Specifications are, therefore subject to change without notice.
®
FOR MORE INFORMATION CONTACT:
dbx Professional Products
8760 S. Sandy Pkwy.
Sandy, Utah 84070
Phone (801) 568-7660
Fax (801) 568-7662
IntÕl Fax (219) 462-4596
http://www.dbxpro.com
