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  • Armand_RSA
    Regular Contributor - Level 1
    2019-11-02

    Hi there,

     

    I would just like to enquire on more information about the FBQ feature of the DSP on the IQ series.

     

    When using Auto and mode on the FBQ feature, do the filters get lifted after a while or how long do they stay activated? 

     

    Can someone also more clearly explain to me the difference between the Auto mode and the Single mode?

    Does Single mode only filter a maximum of 8 frequencies and thereafter nothing? 

     

    The manual says this: 
    Auto: Automatically sets as many filters as required. Whenever a new feedback frequency is discovered, the first filter will be released to attenuate the new frequency, and so forth.
    Single: Activates the FBQ (feedback detection) functionality, up to 8 feedback filters.

    On the HW:B FW2.2 IQ's the Learn function also does not seem to be working correctly. 

     

    ~ Thanks in advance for any answers / replies 

    Regards

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    • Armand_RSA
      Armand_RSA

      Nothing from anyone? 


      One of the biggest reasons for moving over to a complete Turbosound IQ rig was the advanced DSP functions and especially the FBQ. But I need to better know how it functions so I can use it correctly and with confidence. 


       

      • March 21, 2020
    • Armand_RSA
      Paul_Vannatto

      Hi Armand @Armand_RSA ,


      I think the reason no one has responded to your question is that most of us that use the iQ series of speakers do not use the feedback portion of the DSP. Back in the days when I had an analog setup (with an A&H GL2400 console), I used the Behringer Feedback Destroyers on the monitors. When I switched over to the X32, I continued to use the Feeback Destroyers until someone challenged me to learn how to properly ring out/EQ the speakers. I accepted that challenge and glad I did. The monitors sounded so much better and clearer (and had more life to them). Eventually I gave away those Feedback Destroyers. So I pass on the challenge.


       

      • March 22, 2020
    • Armand_RSA
      Armand_RSA

      Thanks for the response. 

      The thing is I am a DJ, and run directly from my DJ mixer into the IQ's. I used to have a JBL EON rig that I ran through a DBX PA2. All the built in DSP options on the IQ's was the main reason I upgraded, so a non-functioning FBQ feature is somewhat annoying. 

      • April 5, 2020
    • Armand_RSA
      AlexLane

      Hi Armand,


       


      On the HW:B FW2.2 IQ's the Learn function also does not seem to be working correctly.
      Can you detail the issue here a bit more? Happy to report this to CARE and see if they can run some tests. We are certainly not aware of an issue like this.


      Auto: Automatically sets as many filters as required. Whenever a new feedback frequency is discovered, the first filter will be released to attenuate the new frequency, and so forth.
      This means that up to 8 notch filters will be added automatically, once the 8 are used if another feedback frequency is detected then the first filter will be overwritten by the new one.



      Single: Activates the FBQ (feedback detection) functionality, up to 8 feedback filters.
      Once 8 filters are deployed, it will not add or replace any more.

      • April 7, 2020
    • Armand_RSA
      Armand_RSA

      Hi @AlexLane,


       


      Thank you for the info on Auto and Single FBQ modes. 



      Last question on that, when I use Auto mode and feedback occures and the IQ "catches" that frequency, does it "release/lift" it after a while, or does it only reset when you power off the unit? 


       


      HW:B Firmware 2.2. Learn function problem:
      When you activate the FBQ Learn Function, it should output a few loud "clicks/pops" (So the unit can hear what frequencies are causing feedback) I have tested this on Firmware 1.7 and it works, but on Firmware 2.2 it is completely silent. 

      Here is a picture of the feature I am refering to: 

      Screen Shot 2020-04-13 at 01.24.45.png
      • April 12, 2020
  • Armand_RSA
    Regular Contributor - Level 1
    2019-11-01

    Hi Music Tribe / Turbosound / Fellow Turbosound users,


    So on the Turbosound IQ series DSP screens there are two bars on the right of the screen indicating the audio levels. First is the input gain and the second is the output.


    I noticed that when running straight from a Pioneer DJM900 mixer, the input level reaches the "clip" level very quickly. (You can see it more clearly when using the Turbosound app on the laptop and connected via USB to the unit.) I now run with my DJM900 on-baord attunator always set at -6dB, but when not even getting close to any red led's on the VU meter, the input on the screen will still indicate it is clipping very quickly. I try to keep my levels mostly at the 0dB/top green LED, but this does not seem right. 


    This input level indicated on the IQ's screen (the left bar) is also post gain knob I have figured out, but it is almost impossible to turn the gain knob up till just under clipping (of the right/master level meter) without the left level meter clipping much quicker, this does not make sence at all. Or are the two level bars on the DSP screens for left: pre-DSP and the right indicating post-DSP?

    There are nowhere any clear info on what these level bars indicate.  


    Then I noticed something the other day when I used the (HW:A FW1.7) Turbosound IQ's together with (HWB FW2.2) IQ's.  The rig was connected in stereo and in series with the full range signal via XLR from the mixer going into an IQ18B bassbin (Fw 2.2) and then to an IQ15B (Fw 1.7) bin and then lastly into an IQ12 (Fw 1.7)  top. On the Fw 2.2 units the input level were constantly much higher than on the units with Firmware 1.7. All the rest of the DSP settings, gain knob etc where set the same, so this was very odd.


    Also, there is a big difference in the levels when using the DSP limiter at 0 and at -1. (Much bigger than the difference of going from say -1 to -2, and to -3 etc...) so I prefer not to use the limiter as it sounds like it reaches it's threshold way to quick. When the limiter is turned off there is much more headroom. 


    I think the engineers should just check the on-board DSP level meters (input/left side and output/right side of the on screen bars) as well as the DSP limiter behaviour.

    Nobody could also answer my question regarding if there is still a limiter active when the on-board DSP limiter is set at 0?
    (I want to ensure my drivers/amps stay protected, but setting the limiter at -1 looses too much volume) 



    Other than that I am extremely happy with the Turbosound IQ series. I hope I can get answers or a response for the above and sorry for language errors, English is not my first language. 

    Regards


     

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    • Armand_RSA
      Armand_RSA

      These are the bars I am refering to

      IMG_5586.JPG
      • November 1, 2019
    • Armand_RSA
      Paul_Vannatto

      Hi Armand @Armand_RSA 


      Welcome to the forum. Assuming you are using the analog input and not the Ultranet input, just below the XLR input is a switch. It should be set to Line, not Mic. What you are describing sounds like it is set to Mic.


       

      • November 1, 2019
    • Armand_RSA
      Armand_RSA

      Hi Paul,


       


      Thank you for the response.

      It unfortunately is not the case and I can confirm this is with the switch set to LINE. 

      Extra note: Although the first level meter of the two bars shows clipping/limiting (the very top white square) it never has sounded distorted. When I noticed the 1.7 versions indicate a gain level much less than the 2.2 I figured it is just a glitch / bad programming, so I don't worry about the left bar when it reaches the top limit, as you can not hear any distortion articfacts in the audio.


        

      • November 2, 2019
    • Armand_RSA
      AlexLane

      Hi @Armand_RSA 


       


      I would like to clear up the Limiters confuision, the "user" limiter is a brick wall limiter designed for level limiting. Think of it as the noise police feature!


       


      With the user limiter set to zero, there are still seperate RMS and PEAK limiters designed to protect the drivers from over powering. These cannot be accessed by the user and are factory locked.


       


      Regarding the input question, input sensitivity is Line +4 dBu, mic -22 dBu. This could potentially be clipped by a particularly "Hot" mixer output.


       


      My reccomendation on the mixer side of things is to adjust the Master Level control so that the master channel level indicator lights at around 0dB at the peak level. This should allow plenty of headroom for peaks on the input to the IQ.


       


      It is worth being carefull to not red line the signal input to your loudspeakers, even at low volume a clipped signal can be quite damaging to loudspeaker drivers as you essentially create a squre wave which makes the driver move in a way the builds up a lot of heat.


       


      Clipping = Greater average power = More heat = Greater stress on the glues that hold a loudspeaker driver together = shorter life for the driver


       


      Hope that helps, let me know if you have further questions.

      • December 9, 2019
    • Armand_RSA
      Armand_RSA

      Hi Alexander,


       


      Thank you so much for the in-depth response Much appreciated. 

      Great, I understand the User Limiter now better. Thanks for clearing that up.

      Yes, you are very much correct. Softer but clipped (square waved) signals from the source/mixer unit are what destroys the drivers quicker. I always ensure not to send any clipped signals from my mixer to the loudspeakers.   

      Just a last question, if my mixer output's at 0dB (top green on the DJM900) and the gain knob is set to 0 on the back of the IQ loudspeaker, but the first bar/meter on the IQ's on-board screen is reaching the top/"max", is it safe to operate like this? I find that the first bar reaches max before the second bar. In other words you can not reach the max output of the loudspeaker/amp (indicated by the second/right bar) before the left/input bar maxes out?

      Kind regards
      Armand

      • December 11, 2019
  • mrbklowe
    Contributor - Level 1
    2019-10-30

    Any idea on how to safely remove front speaker grill cover on Behringer B215XL to replace driver. No screws are located on the front grill cover. 

    0 123
  • etiuda
    Contributor - Level 1
    2019-10-30

    Does the USB connection work only with Behringer Digital Wireless mics or will it work with other brands? Thanks   

    0 191
  • asui
    Contributor - Level 1
    2019-10-29

    Where can i relocate the Top columns for the turbosound ip 3000 for purchase  thanks

    0 68
  • hapeyo
    Contributor - Level 1
    2019-10-23

    Hello, i bought the europort 2000bt in the united States. Now i am living in Chile and have to change al my stuff to 220 V. Anyone can explain the planet earth switch: ""Planet Earth" switching power supply for maximum flexibility (100- 240 V~), noise-free audio, superior transient response plus low power consumption for energy savings."

    i dont know how to switch. Is it only the changing of the fuse?

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  • dilbert_3000
    Contributor - Level 2
    2019-10-21

    I have a switch in the booth on my TBV123 line arrays to remove and apply power, before powering up and down the X32.  When I use the switch, the speakers power up normally but when I power them down, while the X32 is powered up, the speaker LCD screens flash blank a few times and occassionally I can hear a slight clicking in the speakers in conjunction with the flashes. 

    The speakers do not try to boot and  nothing appears on the screen, only the LCD screen backlight flashes blank multiple times over 5-10 seconrds before going dark completely. (The number of flashes and duration is never the same)  I have a couple floor monitors on the same circuit, which go dark immediately as expected. All the speakers are supported over Ultranet connections back to the X32 through a P16 Distributor.   

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  • RobSarahs
    Contributor - Level 1
    2019-10-20

    Hi there, I need a replacement of one of these but cant find it anywhere, can anyone help?Hi there, I need a replacement of one of these but cant find it anywhere, can anyone help?

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    0 141
  • DruMcCoy
    Contributor - Level 1
    2019-10-19

    15715176844583433970913136381751.jpg

    These two lights now only come on, when I turn on the power for my speaker. Why? Thanks for an assistance in advance.

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    • DruMcCoy
      Paul_Vannatto


      @DruMcCoy wrote:


      These two lights now only come on, when I turn on the power for my speaker. Why? 





      Do the come on briefly then turn off, or do they stay on. If it is the latter, you have a hardware problem.


       

      • October 19, 2019
  • Poysippi
    Contributor - Level 3
    2019-10-17
    I am looking for a replacement speaker for my Behringer EUROLIVE B15500XP. I purchased this unit used and have no warranty (bad choice in hindsight) I would love to get this back up in running Kip-
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