The Workstation shall be a single channel
unit in a steel chassis eight inches deep, two
rack units high, with a steel front panel.
The EQ section shall have 30 x 60mm (45mm
travel) centre grounding sliders on standard
ISO frequencies, from 25 Hz to 20 KHz. At
the 0 point each slider shall be grounded,
and in effect removed from the circuit.
The Anti Feedback section shall consist of
an onboard FBX Feedback Exterminator DSP
card, with Reset switch, an Amber LED to
indicate the onset of clipping, and an Active
or Bypassed switch. Additionally there shall
be a rear panel switch for changing the FBX
filter width from 1/5th to 1/10 octave.
The Limiter Threshold shall be variable by a
front panel control, from –10dB to +10dB,
with a Limit LED to indicate Limiting taking
place.
There shall be an overall Output level con-
trol, variable from oooooooooo to +10dB and also an
overall Active or Bypass switch on the front
panel. An LED on the front panel shall indi-
cate AC power being applied.
The unit shall have electronically Balanced in-
puts and outputs, on TRS jack and XLR type
connectors, with passive RFI filters and an In-
put impedance of 40 Kohms. The Input head-
room shall be +20dB, and the frequency re-
sponse shall be 20 Hz to 20 KHz, ±0.5dB.
The Output impedance shall be 300 ohms, and
the maximum Output level +20dB (+10dB
FBX in), with a Signal to Noise ratio of better
than –93dB unweighted (-82dB with FBX in).
Total Harmonic Distortion shall be 0.004%
(0.02 FBX in) @ 0dB, 1 KHz.
AC Power shall be supplied via a removable
mains cable, connecting to an IEC connector
with an integral fuse /voltage change switch
on the rear panel.
The unit shall be the ARX AFW 30 Anti Feed-
back Workstation.
©2003 ARX Systems Pty.Ltd. ACN 006 471 825. All rights reserved. ARX Systems® is a Registered Trade Mark.
‘AFW 30’and ‘Anti-Feedback Workstation’ are Trademarks of ARX Systems. FBX Feedback Exterminator is a
Registered Trademark of Sabine, Inc, and is the brand name of its line of automatic feedback controllers.
• 30 x Extended Resolution long throw centre
grounding faders per channel, on standard
ISO frequencies
• Reset control for Feedback Exterminator
DSPcircuitry
• Clip LED indicates imminent clipping, mon-
itored at all vital stages through the AFW-30
• Balanced Input and Output TRS sockets. Tip
+ HOT, Ring – COLD, Sleeve GROUND
• Balanced Input and Output XLR connectors.
Pin 2 + HOT, Pin 3 – COLD, Pin 1 GROUND
• Active/Bypass switch for Feedback Extermi-
nator DSP circuitry
• Limiter Threshold control and Limit LED
• Level control from oo to +10 dB
• Hardwire Active/Bypass switch for unit
• Power LED indicates AFW-30 is connected
to AC power
• Feedback Exterminator filter width switch
• IEC 3 pin AC connector and integral
fuseholder.
Input
40 K Ohm Balanced
20 K Ohm Unbalanced
Output
300 Ohm Balanced
150 Ohm Unbalanced
Nominal Operating Level
0 dB
Maximum Input Level
+20 dB
Maximum Output Level
+20 dB
EQ section only
+10 dB
FBX in
Signal to Noise Ratio
EQ section only
–93 dB Unweighted
FBX in
–82 dB Unweighted
Gain
User Variable oo to +10 dB
Distortion
0.004%
EQ section only
0.02%
FBX in
measured@ 1 KHz, +4dB
Frequency Response
20 Hz to 20 KHz, ±0.5 dB
Dynamic Range
+113 dB
EQ section only
+92 dB
FBX in
Equalizer Filters
30 x Constant Q on
standard ISO frequencies
FBX Filters
6 fixed, 3 dynamic
FBX Filter Range
51Hz to 17 KHz
FBX Filter Width
1/5th or 1/10th octave
Switchable; refer manual
FBX Filter Depth
0dB to –40dB
FBX Filter Reset Time
Minimum 4 seconds
Peak Limiter Threshold
Variable –10 dB to +10 dB
AC requirements
100–120, 220–240 VAC,
50-60Hz, 18 VA
Size
482 x 88 x 205 mm
19”W x 3½”H x 8”D
Our policy is one of continuous im-
provement, and therefore designs
may change without notice. Howev-
er, unless otherwise stated, specifi-
cations will always equal or exceed
those previously given.
Specifications available on CD ROM.
Latest updates available at:
www.arx.com.au
ARX Systems are based in Melbourne, Australia, where all ARX Products are assembled
and tested in our ‘state-of-the-art’ manufacturing facility
For over 20 years ARX has designed, manufactured and supported Audio Products for
Professional users and applications worldwide
ARX Systems Pty Ltd; PO Box 15, Moorabbin, Victoria 3189, Australia
Phone: 03 9555 7859 Fax: 03 9555 6747 International Fax +61 3 9555 6747
Email: [email protected] Internet: www.arx.com.au