10
FBX-1020 ENGINEERING SPECIFICATIONS
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
FILTERS
10 independent digital notch filters, controlled automatically from 40
Hz to 20 KHz.
Filter width: user-controllable, either 1/10 or 1/5 oct., Constant Q
1
Resolution: 1/50th Octave
Time required to find and eliminate feedback: 0.4 seconds,
typical @ 1KHz
Total number of combined filters active: user selectable, from
1-10
Number of dynamic vs. fixed filters: user selectable
LAST CONFIGURATION STORED IN MEMORY
INPUT/OUTPUT
2
Input/Output Maximum Signal Levels: Ba27dBV peak,
unba21 dBV peak
Output Drive: Unit will perform as specified driving a load >600
Ohms
Input Impedance: Balanced or unbalanced >10K Ohms, PIN 2 high
Output Impedance: Balanced or unbalanced 10 Ohms nominal, PIN
2 high
Bypass: True power off bypass
Headroom: +23dB peak @ 4dBV nominal input, balanced
I/O Connectors: XLR-3 and 1/4" TRS
PERFORMANCE
3
Spectral Variation: < .25 dB, 20Hz to 20 KHz
SNR: >100 dB, typical, "A" weighted
NOTES
1
Below approximately 200 Hz the feedback filters become slightly
wider to increase the feedback and rumble capture speed at these
low frequencies.
2
Note: Inputs may be balanced or unbalanced. For maximum output
capability, outputs must be balanced (XLR or TRS). If either side of
an output is grounded, the peak output and dynamic range will be
reduced by 6 dB.
3
Tests performed using an Audio Precision System One model 322
or equal.
THD: <0.02% @ 23 dBV sine wave at 1 KHz
Dynamic Range: >110 dB with ClipGuard™ automatic clip level
control active
POWER INPUT
Factory configured to either 115 VAC or 230 VAC. 50/60 Hz, 12
Watt input.
FUSE REPLACEMENT
To reduce the risk of fire, replace only with 5x20 mm, .315 A, 250 V,
fast-acting fuse.
DIMENSIONS
1-U rack mount; 19 x 1.75 x 8.0 ins. nominal (rack mountable); 48.3 x
4.5 x 20.3 cm nominal (rack mountable)
WEIGHT
7.0 lbs. (3.3 kg) nominal
OPTIONS
Input/output transformer option
All FBX Feedback Exterminators conform to all Year 2000 (Y2K)
standards.
