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The compressor/limiter/gate shall have two identical chan-
nels, each with an audio frequency response of 20Hz to
20kHz, +0/-0.5dB, an electronically floating balanced input
impedance of not less than 40k
, balanced and 20k
unbal-
anced, and a maximum input level of not less than +22dBu
and 1/4" TRS and XLR connectors. The output shall have an
impedance of no more than 120
balanced or 60
unbal-
anced with a maximum output level of not less than +20dBm,
into a minimum load impedance of 600
and 1/4" TRS and
XLR type connectors. The unit shall also have a sidechain
detector with an input impedance of not less than 10k
unbalanced, a maximum input level of not less than +24dBu
and a maximum output level of not less than +21 dBu bal-
anced or unbalanced and an output impedance of not more
than 2k
balanced and 1k
unbalanced. Sidechain input
jack shall be a 1/4" TS jack; sidechain output shall be a 1/4"
TRS jack.
Total Harmonic Distortion plus Noise shall be less than 0.1%
with any amount of compression (up to 40dB) at 1kHz and
Intermodulation Distortion shall be less than 0.1% SMPTE.
The unit shall have an Equivalent Input Noise level of not
more than -96dBu unweighted, and a dynamic range of not
less than 118dB. Output gain adjustment shall be variable
from -20 to +20dB. The compression threshold range shall
be variable from -40 to +20dBu and compression ratio shall
be variable from 1:1 to
:1. The peak limiter threshold range
shall be variable from +4 to +24dBu. The compressor attack
and release times shall be selectable for either program
dependent or manually adjustable, scalable, program depen-
dent operation. The compression ratio characteristic shall be
selectable for either the hard or soft knee curve type with a
maximum compression of no less than 60dB. The
expander/gate shall have a threshold of -
to no less than
+15 dBu, an attack time of no more than 100μsec, a program
dependent release time and a downward expansion ratio vari-
able from 1:1 to 8:1. All input, output and control signals
shall be via the rear panel. The stereo link shall be of the true
RMS summing type with Channel 1 as the master when
linked. The unit shall have the following front panel switch-
es for each channel, with each switch incorporating an inte-
gral LED to signal selection of that switch: Sidechain
Monitor, Sidechain Bypass, OverEasy, Contour, Auto, I/O
Meter, and Bypass. There shall also be one Stereo Link
switch. Each channel shall have the following identical con-
trols: expander/gate Threshold, expander/gate Ratio, com-
pression Threshold, compression Ratio, compression Attack
time, compression Release time, Output Gain, limiter Threshold; and the following identical metering and indicator LEDs for each channel: Below/Above gate threshold, Below/
At/Above compression threshold, Gain Reduction (12 LEDs), Input or Output Level (8 LEDs), peak limiter active. There shall be a rear panel switch for each channel to select
nominal input and output operating levels at -10dBV or +4 dBu. The unit shall be capable of accepting one compatible audio transformer installed for each channel. The power
requirements shall be 100-120VAC 50/60Hz or 200-240VAC, 50/60Hz, 20W, via a detachable IEC type AC cable. The size of the unit shall be 1.75" x 19" x 7.9"
(4.4cmx48.3cmx20.1cm) with a net weight of 5.11 lbs (2.3 kg) and a shipping weight of 7.5 lbs (3.4 kg). The 1U high, full rack width stereo compressor/limiter/gate shall be a dbx 1066.
COMPRESSOR / LIMITER / GATE
1066
®
A Harman International Company
Input
Connectors:
XLR and 1/4" TRS (Pin 2 and tip hot)
Type:
Electronically balanced/unbalanced, RF fil-
tered
Impedance:
Balanced > 50 kOhm, unbalanced > 25
kOhm
Max Input Level:
> +24 dBu balanced or unbalanced
CMRR:
Typically > 50 dB at 1 kHz
Outputs
Connectors:
XLR and 1/4" TRS (Pin 2 and tip hot)
Type:
Servo-balanced/unbalanced, RF filtered
Impedance:
Balanced 120 Ohm, unbalanced 60 Ohm
Max Output Level:
> +21 dBu, > +20 dBm
Sidechain Input
Connector:
1/4" TS
Type:
Unbalanced, RF filtered
Impedance:
> 10 kOhm
Max Input Level:
> +24 dBu
Sidechain Output
Connector:
1/4" TRS (tip hot)
Type:
Impedance balanced, RF filtered
Impedance:
Balanced 2 kOhm, unbalanced 1 kOhm
Max Output Level:
> +21 dBu balanced or unbalanced
System Performance
Bandwidth:
20 Hz to 20 kHz, +0/0.5 dB
Frequency Response:
0.35 Hz to 90 kHz, +0/-3 dB
Noise:
< -96 dBu, unweighted, 22 kHz measure-
ment bandwidth
Dynamic Range:
> 118 dB, unweighted
THD+Noise:
0.008% typical at +4 dBu, 1 kHz, unity
gain
0.08% typical at +20 dBu, 1 kHz, unity
gain
< 0.1%, any amount of compression up to
40 dB, 1 kHz
IMD:
< 0.1% SMPTE
Interchannel Crosstalk:
< -80 dB, 20 Hz to 20 kHz
Stereo Coupling:
True RMS Power Summing™
Compressor
Threshold Range:
-40 dBu to +20 dBu
Ratio:
1:1 to
'
:1
Threshold Characteristic:
Selectable OverEasy® or hard knee
Attack/Release Characteristic:
AutoDynamic™
Attack/Release Modes:
Selectable Manual or Auto
Manual Attack Time:
Scalable program-dependent
Manual Release Time:
Scalable program-dependent
Auto Attack Time:
Program-dependent
Auto Release Time:
Program-dependent
Output Gain:
-20 to +20 dB
Limiter
Threshold Range:
+4 dBu to +24 dBu (off)
Ratio:
'
:1
Limiter Type:
PeakStopPlus™ two-stage limiter
Stage 1:
PeakStop® brickwall limiter
Attack Time:
Zero
Release Time:
Zero
Stage 2:
Predictive intelligent program limiter
Attack Time:
Program-dependent
Release Time:
Program-dependent
Expander/Gate
Threshold Range:
Off to +15 dBu
Ratio:
1:1 to 30:1
Attack Time:
< 100 μsec
Release Time:
Program-dependent
Function Switches
SC Ext:
Routes the external sidechain input signal
to the detector.
SC Mon:
Routes the sidechain signal to the output,
interrupting the normal audio.
OverEasy®:
Activates the OverEasy® compression
function.
Contour:
Activates the frequency-dependent detec-
tor function.
Auto:
Activates automatic program-dependent
attack and release times, disabling the
manual Attack and Release controls.
I/O Meter:
Switches between monitoring input and
output levels on the Input/Output Level
meter.
Bypass:
Activates the direct input-to-output hard-
wire relay bypass. Relay automatically
hard-wire bypasses unit at power-down
and provides a power-on delay of 1.5 sec.
Operating Level (rear panel):
Switches the nominal operating level
between -10 dBV and +4 dBu simultane-
ously for both input and output levels.
ST Link:
Links both channels for stereo operation.
Channel One becomes the master.
Indicators
Gain Reduction Meter:
12-segment LED bar graph at 1, 2, 4, 6, 9,
12, 15, 18, 21, 24, 27 and 30 dB
Input/Output Meter:
8-segment LED bar graph at -24, -18, -12,
-6, 0, +6, +12, and +18 dBu
Compressor Threshold Meter:
3-segment LED bar graph at Below (-),
OverEasy®. and Above (+)
Exp/Gate Threshold Meter:
2-segment LED bar graph at Below (-) and
Above (+)
Limiter, Thershold Meter:
1 LED to indicate PeakStopPlus™ limiting
Function Switches:
LED indicator for each front-panel switch
Options
Output Transformer
Per Channel:
Jensen®JT-123-
dbx
or JT-11-
dbx
, BCI™
RE-123-
dbx
or
RE-11-
dbx
Power Supply
Operating Voltage:
100-120 VAC 50/60 Hz 200-240 VAC
50/60 Hz
Power Consumption:
20 Watts
Fuse:
100-120 VAC: 250 mA Slow Blow
200-240 VAC: 125 mA Type T
Mains Connection:
IEC receptacle
Physcial
Dimensions:
1.75"Hx19"Wx9"D
(4.4cmx48.3cmx20.1cm)
Weight:
5.1 lbs (2.3 kg)
Shipping Weight:
7.5 lbs. (3.4 kg)
CHANNEL ONE
CHANNEL TWO
EXPANDER / GATE
LIMITER
COMPRESSOR
1066
Compressor/
Limiter/Gate
GAIN REDUCTION dB
INPUT / OUTPUT LEVEL dBu
THRESHOLD
THRESHOLD
THRESHOLD
THRESHOLD
RATIO
4:1
:1
10:1
6:1
1:1
2:1
3:1
PeakStopPlus
OUTPUT GAIN
THRESHOLD
0
-20
-10
+10
+20
dB
SC Enable
SC Mon
OverEasy
Contour
Auto
I/O Meter
Bypass
Stereo
Couple
EXPANDER / GATE
LIMITER
COMPRESSOR
GAIN REDUCTION dB
INPUT / OUTPUT LEVEL dBu
THRESHOLD
THRESHOLD
THRESHOLD
SC Enable
SC Mon
OverEasy
Contour
Auto
I/O Meter
Bypass
RATIO
RELEASE
-24
-18
-12
-6
0
+6
+12
+18
-24
-18
-12
-6
0
+6
+12
+18
-
+
-
+
+
24
21
27
30
18
15
12
9
6
4
2
1
24
21
27
30
18
15
12
9
6
4
2
1
-
O
+
-
O
+
THRESHOLD
RATIO
OUTPUT GAIN
THRESHOLD
ATTACK
RATIO
RELEASE
+
-40
-20
+15
0
OFF
-60
dBu
2:1
4:1
3:1
1.2:1
8:1
1.4:1
1.6:1
PROFESSIONAL PRODUCTS
0
-20
-10
+10
+20
dB
.35
3
1
.15
.04
dB/mSec
4:1
:1
10:1
6:1
1:1
2:1
3:1
2:1
4:1
3:1
1.2:1
8:1
1.4:1
1.6:1
OFF
+16
+12
+4
+6
+8
dBu
OFF
+16
+12
+4
+6
+8
dBu
-40
-20
+15
0
OFF
-60
dBu
-10
0
+20
+10
-40
-30
-20
dBu
ATTACK
.35
3
1
.15
.04
dB/mSec
50
250
125
12.5
5
dB/Sec
50
250
125
12.5
5
dB/Sec
-10
0
+20
+10
-40
-30
-20
dBu
PeakStopPlus
CHANNEL ONE
SIDECHAIN
OUTPUTS
INPUTS
SEND
RETURN
OPERATING
LEVEL
+4 dBu
-10 dBV
CHANNEL TWO
SIDECHAIN
OUTPUTS
INPUTS
SEND
RETURN
OPERATING
LEVEL
+4 dBu
-10 dBV
PIN1 / SLEEVE
PIN 2 / TIP
+
PIN 3 / RING
-
PIN1 / SLEEVE
PIN 2 / TIP
+
PIN 3 / RING
-
FOR MORE INFORMATION CONTACT:
dbx Professional Products • 8760 S. Sandy Pkwy. • Sandy, Utah 84070
Phone (801) 568-7660 • Fax (801) 568-7662 • Int’l Fax (801) 568-7583
[email protected] • http://www.dbxpro.com
dbx engineers are constantly working to improve the quality of our products. Specifications are, therefore subject to change without notice.