Filter
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19
APPENDICES
Appendix A. Specifications
Frequency Response
20 to 20k Hz
±
1.0 dB re 1 kHz
Dynamic Range
104 dB minimum, A-weighted, 20 Hz to 20 kHz
Sampling Rate
48 kHz
Digital-to-Analog, Analog-to-Digital Conversion
20 bit resolution
Voltage Gain
–1 dB
±
1dB (power off)
0 dB
±
2 dB (equal input and output sensitivities)
12 dB
±
2 dB (input –10 dBV, output +4 dBu)
–12 dB
±
2 dB (input +4 dBu, output –10 dBv)
Impedance
Input: 47 k
Ω
±
20% actual
Output: 120
Ω
±
20% actual
Input Clipping Level
+18 dBu minimum (at +4 dBu setting)
+6 dBu minimum (at –10 dBV setting)
Output Clipping Level
+18 dBu minimum (at +4 dBu setting)
+6 dBu minimum (at –10 dBV setting)
T
otal Harmonic Distortion
< 0.05% at 1 kHz, +4 dBu, 20 to 20 kHz
LED Signal Indicators
Clip: 6 dB down from input clipping
Delay from Input to Ouput
< 1.0 ms, all filters set to Flat
Polarity
Input to output: non-inverting
XLR: pin 2 positive with respect to pin 3
1
/
4
-in. TRS: tip positive with respect to ring
Operating V
oltage
DFR11EQ: 108 to 132 Vac, 50/60 Hz
DFR11EQE: 216 to 264 Vac, 50/60 Hz
NOTE: This product is not disconnected from the mains
power supply when the POWER switch is in the Off
position.
Temperature
Range
Operating: 0
_
to 60
_
C (32
_
to 140
_ F)
Storage: –30
_
to 70
_
C (–22
_
to 158
_ F)
Fuse
DFR11EQ
:120 VAC. Fuse: 100 mA, 250V time delay.
DFR11EQE
: 250 VAC. Fuse: 50 mA, 250V time delay
In
order to change a blown fuse, remove the power cord
and
pry open the drawer with a flathead screwdriver.
FUSE
Dimensions
219 mm x 137 mm x 40 mm
8
5
/
8
in x 5
3
/
8
in x 1
3
/
4
in
Weight
930 g (2.5 lbs)
FEEDBACK FIL
TERS
Ten (10)
1
/
10
-octave adaptive notch filters from 60 Hz
to 20 kHz
Deployed to 1 Hz resolution of feedback frequency
Deployed in depths of 3 dB, 6 dB, 9 dB, 12 dB, and 18
dB attenuation
Filter shape variable between HI Q and LOW Q (see
High Q vs. Low Q Filters.
GRAPHIC EQUALIZER
Frequency Bands
30 bands on ISO,
1
/
3
-octave centers
Filter T
ype
1
/
3
-octave, constant-Q
Maximum Boost
6 dB per band
Maximum Cut
12 dB per band, highpass and lowpass filters
CERTIFICATIONS
DFR11EQ:
UL Listed and cUL Listed
to UL 813 and CSA
C22.2
No. 1. Authorized under V
erification provision
of
FCC Part 15 as a Class B Digital Device.
DFR11EQE: Conforms to European Union Directives,
eligible
to bear
CE marking. Meets European Union Low
Voltage
Requirements: VDE GS-Certified to EN 60 950.
Meets
European Union EMC Emissions Requirements:
EN 50 081-1 (1992) [EN 55022]. Meets European
Union EMC Immunity Requirements EN 50 082–1
(1992): [RF radiated (IEC 801–3) meets Criterion A;
ESD meets Criterion B; EFT (IEC 801–4) meets
Criterion
B].
This symbol indicates that dangerous voltage
constituting a risk of electric shock is present
within
this unit.
This
symbol indicates that there are important
operating and maintenance instructions in the
literature
accompanying this unit.
FURNISHED ACCESSORIES
Power Cable (DFR1
1EQ) 95A8389.
. . . . . . . . . . . . . . . . . .
Power
Cable (DFR1
1EQE) 95A8247.
. . . . . . . . . . . . . . . .
5-pin
DIN Shure Link Cable
95A8676.
. . . . . . . . . . . . . . . .
Single
Mount Rack Bracket
53A8450.
. . . . . . . . . . . . . . . .
Dual
Mount Rack Bracket
53B8442.
. . . . . . . . . . . . . . . . .
Straddle
Bars
53B8443.
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5”
Floppy disk
84A003.
. . . . . . . . . . . . . . . . . . . . . . . . . . .
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