background image

e- The T-FBK4 will detect and remove feedback by placing notch filters on the proper frequencies. 
Continue to slowly raise the gain until all feedbacks have been eliminated, then exit from SETUP 
Mode by pressing and releasing the CLEAR/SET UP button quickly.

If all 24 filters have been used in SETUP Mode, the SETUP Mode is left automatically and no more 
filters are available in LIVE Mode.

2). Using LIVE Mode (REAL TIME)
The T-FBK4 operates normally in LIVE Mode (24 notch filters minus the fixed used filters).
Live Mode filters are set on the feedback frequency as soon as a new feedback is detected,  
according to the knob position of the selected LIVE Mode Variations (from MUSIC to SPEECH).
If all LIVE filters are used and a new feedback occurs, the oldest LIVE filter is cleared and reallocate 
to the new feedback frequency (the correspondent led will light).
The T-FBK4 will continue to search feedback frequency through the LIVE notch filters.
MUSIC High Q mode, (use notch filters at 1/80th Octave), continuously variable until SPEECH Low 
Q mode, (use notch filters at 1/5th Octave).

3. CLEARING FILTERS

To reset the LIVE filters, press the CLEAR/SET UP button on the selected channel (Button LED will 
switch OFF). The currently active filters will be cleared and the assigned LED will turn off. 
If you wish to "reset" all the filters, hold the CLEAR/SET UP button (more than 3 seconds) until  the 
button LED is "blinking", indicating that you have entered the SETUP Mode and that all filters 
FIXED and LIVE have been cleared.

4. LOCK ON/OFF

When you finished setting the T-FBK4, you can save your setup, switch ON the LOCK selectors in 
the rear panel.
After this it will be impossible to operate on front panel.  

5. AUTOMATIC FILTER RELEASE

The T-FBK4 provides the user with 24 notch filters, for each channel, they are enough for normal 
performances. If several numbers of filters are required, (more than 16), we strongly recommend 
to operate a new setup of the sound system.

Anyway, even if the T-FBK4 uses very narrow notch filters, accordingly with the selected 
application type, unused notch filters must be avoided, to always guarantee the best audio 
performance.
The T-FBK4 constantly monitors the status of the LIVE filters and automatically removes the ones 
that are no longer necessary.

6

User Setup

11

Hz

+3
+2
+1

0

-1
-2
-3
-4
-5
-6
-7
-8
-9

700

750

820 850 900 .95k 1k

1.2k

+3
+2

+1

 0

-1

-2
-3
-4
-5
-6
-7
-8
-9

d

B

u

d

B

u

Music High-

1/80

th

 Octave

Speech 

1/5

th

 Octave

Notch Filter Q Diagram

Содержание T-FBK4 Series

Страница 1: ...DIGITAL PROCESSOR AUTOMATIC FEEDBACK KILLER T FBK4 ...

Страница 2: ......

Страница 3: ...t 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a pa...

Страница 4: ...d in creating and bringing to market products that can fill multiple applications and also offer customers exceptional value T FBK4 is for professional use It can be used in following electromagnetic environment residential commercial and light industrial urban outdoors It is intended for rack mounting Under the EM disturbance the ratio of signal noise may be changed above 3dB Features Usefull Dat...

Страница 5: ...r each channel is the last Live inserted notch filter 4 BYPASS This button is used to bypass the notch filters in the signal path 5 CLEAR SET UP a Pressing this button is to active the LIVE mode The light of button would be lit steadily b Pressing this button again is to clear the setting created by LIVE mode The light of button would be OFF c Holding this button for 3 seconds is used to enter SET...

Страница 6: ...by the AC socket If the fuse blows replaced with a fuse of the correct type only 9 Input Output Connectors Two types of input connectors are provided for input connections 2 x female locking XLR type connectors and 2 x 1 4 TRS jack connectors tip ring sleeve The maximum input level that the processor can accept is 15dB 4 356Vrms 10 Lock Switch This switch locks unlocks all access to the front pane...

Страница 7: ... Set the sensitivity at 10dBu on the T FBK4 and adjust the MIC Gain control on the MIXER for having a necessary level on T FBK4 4 Repeat the same step connections for the CH2 of T FBK4 if you like to use For maximum performance and proper operation the average input signal should consistently light up at the 0dBu LED and the 10dBu LED lighting occasionally 5 Connection 7 INSERT MIC 2 INSERT MIC 1 ...

Страница 8: ... of T FBK4 with a Return stereo jack unbalanced 3 Set the sensitivity at 10dBu on the T FBK4 and adjust the SUB GROUP MAIN L R fader control on the MIXER for having a necessary level on T FBK4 For maximum performance and proper operation the average input signal should consistently light up at the 0dBu LED and the 10dBu LED lighting occasionally Connection 5 8 INSERT SUB 2 INSERT SUB 1 S E N D S E...

Страница 9: ...puts of power amplifiers 3 Set the sensitivity at 4dBu on the T FBK4 and adjust the L R fader control on the MIXER for having a necessary level on T FBK4 For maximum performance and proper operation the average input signal should consistently light up at the 0dBu LED and the 10dBu LED lighting occasionally 5 Connection 9 SPK IN OUTPUT CH1 CH2 AMP IN CH1 CH2 AMP OUTPUT CH1 CH2 SPK IN MIX OUT L R I...

Страница 10: ...light only occasionally 2 SETUP LIVE Mode The T FBK4 offers a total number of 24 notch filters for each channel CH 1 CH 2 and two main operation modes a SETUP mode with the fixed filters b LIVE mode with the free filters not used in SETUP mode The SETUP mode is used to detect and remove feedback problems in the audio system due to the microphone placement different environments shapes etc Once the...

Страница 11: ...ress the CLEAR SET UP button on the selected channel Button LED will switch OFF The currently active filters will be cleared and the assigned LED will turn off If you wish to reset all the filters hold the CLEAR SET UP button more than 3 seconds until the button LED is blinking indicating that you have entered the SETUP Mode and that all filters FIXED and LIVE have been cleared 4 LOCK ON OFF When ...

Страница 12: ...s Input impedance 3 6K ohm 15 dBu Analog Outputs Output impedance 120 ohm 15 dBu A D Performance 114 dB A weighted A D Conversion 24 bit Dynamic Range 106 dB A weighted 24 bit System Performance 48 kHz Dynamic Range 106 dB A weighted 0 01 1 kHz Frequency Response 20 Hz to 20 kHz 0 5 dB Inter channel Crosstalk Crosstalk input to output Operating Voltage 230 VAC 50 60 Hz 115 VAC 50 60 Hz 15 W 86 dB ...

Страница 13: ...8 Guarantee 13 ...

Страница 14: ......

Страница 15: ......

Страница 16: ......

Страница 17: ......

Страница 18: ......

Страница 19: ...15 1 3 2 4 5 6 7 ...

Страница 20: ...8 9 10 8 9 10 ...

Страница 21: ......

Страница 22: ......

Страница 23: ......

Страница 24: ......

Страница 25: ......

Страница 26: ...3 6K ohmios 15 dBu 15 dBu 106 106 106 86 86 120 ohmios ...

Страница 27: ......

Страница 28: ...NF04961 1 1 ...

Отзывы: