SABINE FBX1220 Operating Instructions Manual Download Page 3

LIT-FBX1220-1224-OP-EN-080208.pmd - ks

3

©

 2008 Sabine, Inc.

SeCtIon two — aPPlICatIonS

2.2.  FBX Setup for entire Mix

2.1.  FBX Setup for Monitors

2.3.  FBX Setup for Single Insert Point

2.4.  FBX Setup for Insert Send & return

right Main Send

left Main Send

Ch. B

IN

Ch. A

IN

All other Signal 

Processing

Ch. B

OUT

Ch. A

OUT

FILTERS

•  12  independent  digital  notch 

filters per channel,

 controlled au

-

tomatically from 40 Hz to 20 KHz.

•  Filter width:

 user-controllable - either 

1/10 or 1/5 octave*, constant "Q" 

•  Resolution:

 1 Hz 

•  Time required to find and eliminate 

feedback:

 0.4 seconds, typical @ 1 

KHz

•  Number  of  Dynamic  vs.  Fixed 

filters  per  channel:

  user  select

-

able.  Last  configuration  stored  in 

memory.

INPUT/OUTPUT**

•  Input/Output  Maximum  Signal 

Levels:

  Balanced  +27dBV  peak, 

unba21 dBV peak

•  Output  Drive:

  Unit  will  perform 

as  specified  driving  a  load  >600 

Ohms  

•  Input Impedance:

 Balanced or un

-

balanced >40K Ohms, PIN 2 high

•  Output  Impedance:

  Balanced  or 

unbalanced 150 Ohms nominal, PIN 

2 high

•  Bypass:

 True power off bypass

•  Headroom:

 +23 dB peak @ 4 dBV 

nominal input, balanced

•  I/O Connectors: 

XLR-3 and 1/4" 

TRS

PERFORMANCE***

•  Frequency response:

  20 Hz – 20 

KHz +/- 0.3 dB

•  Gain matching:

  +/- 0.2 dB

•  Spectral Variation: 

 

+ .25 dB, 20 

Hz to 20 KHz

•  SNR - Dynamic Range:

 >100 dB 

•  THD:

 .005% at 1 KHz

  < 0.01% 20 Hz – 10 KHz

  < 0.025% 10 KHz – 20 KHz

•  Dynamic Range:

 >105 dB

POWER INPUT

•  230  VAC:    200  –  240  VAC  50/60 

Hz

 

FUSE

•  230 VAC, 0.1 A, 10 W, 0.160 A SB 

fuse

DIMENSIONS

•  1-U rack mount; 19 x 1.75 x 6.25 in. 

nominal (rack mountable); 48.3 x 4.5 

x 15.9 cm nominal

WEIGHT

•  8.0 lbs. (3.6 kg) nominal

SeCtIon tHree — enGIneerInG SPeCIFICatIonS

TS or TRS Connectors

Ch. B OUT

Ch. A OUT

Ch. B IN

Ch. A IN

TS or TRS Connectors

Ch. 2

<

>

Insert 

Send

Insert 

Return

Ch. 1

<

>

Insert 

Send

Insert 

Return

< Low Z >

< High Z >

<  Insert >

Ch. 1

Ch. 2

TRS Connector

TRS Connector

Y Insert Cords (TRS to TS + TS)

Ch. B OUT

Ch. B IN

Ch. A IN

TS "Y" Connector

Ch. A OUT

TS "Y" Connector

Monitor Mix 1

Monitor Mix 2

Ch. B

IN

Ch. A

IN

Ch. B

OUT

Ch. A

OUT

Tests performed using an Audio Precision 

System One model 322 or equal.

*Below  approximately  200  Hz  the  feedback  filters 

become slightly wider to increase the feedback and 

rumble capture speed at these low frequencies.

IMPORTANT NOTE

•  Mixing  balanced  and  unbal-

anced connections may result 
in a 6 dB loss of gain. 

IMPORTANT NOTE 

•  Use  a  ¼-inch TRS  plug  for 

balanced sends/inserts.

•  Use  a  ¼-inch  TS  plug  for 

unbalanced sends/inserts.

•  Mixing  balanced  and  unbal-

anced connections may result 
in a 6 dB loss of gain. 

Refer to 

section 5.2.

IMPORTANT NOTE 

•  Use  a  ¼-inch TRS  plug  for 

balanced sends/inserts.

•  Use  a  ¼-inch  TS  plug  for 

unbalanced sends/inserts.

•  Mixing  balanced  and  unbal-

anced connections may result 
in a 6 dB loss of gain. 

Summary of Contents for FBX1220

Page 1: ...d Return 3 SECTION THREE ENGINEERING SPECIFICATIONS 3 SECTION FOUR OPERATING INSTRUCTIONS 4 4 1 Before You Begin 4 4 2 How To Operate your FBX1220 FBX2420 5 SECTION FIVE How to use FBX Features 6 5 1 Input Output Level Switches 6 5 2 FBX Filter Control 6 5 3 Important Operating Considerations 6 SECTION SIX TROUBLESHOOTING TIPS 7 SECTION seven FBX Theory Practice 8 7 1 Introduction to FBX 8 7 2 The...

Page 2: ...ull out the fuse holder and remove the old fuse 3 Install a new fuse into the holder Replace only with one of the following fuses 230 VAC 0 1 A 10 W 0 160 A SB fuse 4 Refit the fuse cover 11 Power Switch Previous settings retained during power off 12 Quarter inch Output TRS balanced or TS Unbalanced output 13 Input Output Level Switches Set to match your desired Input Output level configurations F...

Page 3: ...e 100 dB THD 005 at 1 KHz 0 01 20 Hz 10 KHz 0 025 10 KHz 20 KHz Dynamic Range 105 dB POWER INPUT 230 VAC 200 240 VAC 50 60 Hz FUSE 230 VAC 0 1 A 10 W 0 160 A SB fuse DIMENSIONS 1 U rack mount 19 x 1 75 x 6 25 in nominal rackmountable 48 3x4 5 x 15 9 cm nominal WEIGHT 8 0 lbs 3 6 kg nominal SECTION THREE ENGINEERING SPECIFICATIONS TS or TRS Connectors Ch B OUT Ch A OUT Ch B IN Ch A IN TS or TRS Con...

Page 4: ... their frequency center points until the unit is reset by the user The system s gain before feedback is limited primarily by the number of fixed filters i e increasing the number of fixed filters increases the system s gain before feedback In addition you can LOCK the fixed filters so they do not get any deeper Locked fixed filters are no longer adaptive The FBX s DYNAMIC FILTERS control intermitt...

Page 5: ...his process while you continue raising the gain until all filter LEDs cycle back and forth in sequence This is your indication that the FBX is exiting setup mode IMPORTANT Reduce gain slightly You are now in READY perfor mance mode with the Fixed filters locked and the blue Ready light on Begin the show c You may quit Setup mode at any time prior to its automatic exit by simply pressing the READY ...

Page 6: ...lease the button 5 2 4 Dynamic Filter Timer The Dynamic Filter Timer when enabled automatically resets Dynamic filters after a user selected time has passed refer to Timer Settings chart at right 5 2 4 1 Set the Dynamic Filter Timer 1 Press and hold the RESET DYNAMICS button The Dynamic LEDs flash twice and reset Continue holding the button and the current Dynamic Filter Timer setting will flash t...

Page 7: ...balanced and unbalanced inputs and out puts A Yes An unbalanced input and balanced output is compat ible Q Why does one of the FILTER ACTIVITY LEDs blink A The last filter to be automatically updated blinks During normal operation the blinking will move from filter to filter as they are reset This gives the user a visual confirmation that the unit is responding to new feedback and is functioning p...

Page 8: ...telligently distinguishing feedback from music or speech 2 A second advantage is that FBX micro filters are precisely placed anywhere feedback occurs with 1 Hz resolution while graphic EQ filters are limited to 31 fixed center points An FBX filter represents a direct hit on feedback In contrast a graphic EQ filter can only approximate the exact frequency of the feedback and the filter or filters w...

Page 9: ... be used as needed to exterminate feedback After years of experience and experimentation Sabine has settled upon a default balance of 9 fixed and 3 dynamic filters set at the factory This default condition can be changed to any combination you require If you follow setup instructions for setting FBX filters your FBX1220 FBX2420 will automati cally exit SETUP mode enter READY status after all fixed...

Page 10: ... an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Canadian Compliance Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regula tions of the Canadian Department of Communications Le present appareil numeri...

Page 11: ...t of or caused by a non Sabine alteration or attachment nor does Sabine assume any responsibility for damage to interconnected non Sabine equipment that may result from the normal functioning and maintenance of the Sabine equipment UNDER NO CIRCUMSTANCES WILL SABINE BE LIABLE FOR ANY LOST PROFITS LOST SAVINGS ANY INCIDENTAL DAMAGES OR ANY CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY T...

Page 12: ... Setup mode You are ready to go The blue LED will flash Push READY again at any time to Lock Fixed filters the blue LED stays lit See the operating guide for more information on locking fixed filters Raise gain slowly Fixed filter LEDs will flash amber and then remain lit one at a time as filters are set Wireless Mics If you are using a wireless mic stop raising gain after a few filters and move t...

Reviews: