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  • Gasper
    Contributor - Level 1
    2020-02-02
    PDX3000 | Power Amplifiers

    Hi,

     

    I am new here. I would like to ask some technical question about new Lab Gruppen PDX3000 amp. It seems to be a perfect solution for my JBL4645Cs. First of all I would like to know what is the DAMPING FACTOR (aprox. up to 300Hz)?. For the input on XLRs I would like to connect it directly from the integrated amplifier from speaker terminal (high level to low level); I made some measurements and normally high level does not exceed 0,5V - how much volts can take XLR input on PDX3000?

     

    Thank you very much in advance.

     

    Kind regards,

     

    Gasper Jancigaj

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    • Gasper
      AlexLane

      Hi Gasper,


       


      The following is a white paper published by Lab.gruppen detailing why we do not use Damping Factor in our specifications.


       


      Damping factor


      The damping factor is determined by the quotient of the speaker impedance and the output impedanceof the amplifier. To state the damping factor figure of an amplifier is meaningless, as the speakerimpedance’s varies with the frequency and the various types and brands of loudspeakers existing.The figures of the true damping factor are only valid for a specific amplifier/ loudspeakercombination. This fact gives one of the reasons why Lab.gruppen don’t publishes the damping factorfigures.The only figures that are relevant for amplifiers are the output Impedance figures. Most amplifiers onthe market only show low output impedance (or high damping factor) at low frequencies and high(er)at high frequencies. This is due to the improper design of the output network and/or frequencydependent feedback. Lab.gruppen design has the feature to have nearly constant impedance over theaudio frequency band with a value of 0.05 to 0.07 ohms (50-70 mohms) . This causes less coloration.Another feature of the power supply in the fP 2200 - fP 6400 (thanks to the stabilised power supply),is that the output impedance doesn't rise during clip situations. In most conventional amplifiers theimpedance rise 10 or l00 times during clip. That causes uncontrolled movements of the speaker-cone.The conclusion must be that the Lab.gruppen switch mode power supplies sound better or have betterdefinition, especially in the bass region, compared to conventional designs.


       


      Damping factor influences on active and passive frequency divided loudspeakers


      Another reason not to publish the damping factor is that it’s not relevant to the audio quality of the power amplifier. For example; a professional loudspeaker driver has a DC-resistance between 2 and 5ohms, which is connected in series with the driver in the equivalent circuit diagram of the driver. Inthis case, the damping factor has more to do with the speaker itself than the amplifier, as the speakerdriver is connected directly to the power amplifier just as in an actively divided system (see example below).In a passively divided speaker system the filter network circuit are placed between the power amplifierand the speaker driver. In this case, however, the filter impedance determines the damping factor ofthe speaker driver. The output impedance of the power amplifier can influence the characteristics ofthe filter response, but it’s not sure that a lower impedance (higher damping factor of the poweramplifier) will give a better response. A classical example is the tube amplifier, which has relativelyhigh output impedance and which gives a very good sonic result in most cases.


       


       


       


       


      I am not entirely sure I understand your question,  "For the input on XLRs I would like to connect it directly from the integrated amplifier from speaker terminal". Could you explain what you wish to do in a bit more detail please?


       


      The PDX inputs are Line Level, if you are using an appropriate audio source then it will be a line level output also. What are you planning on using to drive the input on the amplifier?


       
      • April 6, 2020
  • sowatt
    Contributor - Level 1
    2020-01-31
    where to get spare parts for PLM Series | Power Amplifiers

    is there any other way to get spare parts of the PLM series 
    bequase every time we if send it to repair and they have this Absurd high repair costs
     we can also do it ourselfs   its not that hard   its more hard to find the problem  
    but with 7 plm's in total  we rather want to do it ourselfs 

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    • sowatt
      AlexLane

      Hi Sowatt,


      You can contact our CARE team and ask but I would warn you that performing these repairs yourself will void your warranty. Also, our service centers have specialised repair and testing equipment which is quite essential to perform a quality and most importantly, safe, repair.


      Not trying to downplay your skills as a repair engineer, just a bit of insight into what goes into the process of service.


      Honestly I would very strongly reccomend you send your amps for repair in a certified service center, if you are getting repeat failures then its worth doing some analysis as to the cause also. It may be that you can avoid having to send it in to start with.


       


      I am more than happy to advise and assist further...


       
      • April 6, 2020
  • BlackBarnBar
    Contributor - Level 1
    2020-01-30
    Lab 2000 | Power Amplifiers

    Warenty lab 2000? I want send my lab 2000 in for repair. How and wher do I send it? 

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    • BlackBarnBar
      RexBeckett

      @BlackBarnBar 


      Hello Rickard, welcome to the community.


       


      I suggest that you raise a Care ticket (Service Request) explaining your problem. This is done by clicking on Support at the top of the page and then clicking the Create a Care Ticket button. This is only possible if you have completed the required fields in your profile. The Care ticket is currently the only way to request technical support, service and spare parts from any of the Music Tribe companies.
      • January 29, 2020
  • Pavel-Cerny
    Contributor - Level 1
    2020-01-22
    LAB GRUPPEN IPD2400 - IntelliDrive MacOsX Catalina - when will be ready | Power Amplifiers

    Hallo,

         Now I'm install MacOsX Catalina - impossible to used with IntelliDrive for my 6x IPD2400, is big problem for me. Please inform us when will ready for Catalina - your last update was in 2017, is time for next upgrade.

    Thanks, Pavel

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  • hoangbaokhoa
    Contributor - Level 2
    2019-12-26
    WARRANTY FOR LAB GRUPPEN AMPLIFIER BOUGHT FROM A MUSIC TRIBE DEALER NOT RUNNING ... | Power Amplifiers

    Dear Team,

    We are Hoang Bao Khoa Co. - a customer of Music Tribe in Vietnam.

    Recently, we have got some cases in which the end user's Lab Gruppen Amplifiers broke. However, these products bought from the company - one of Music Tribe dealers in Vietnam currently does not run business anymore and the warranty period is still valid. Thus they come to us for consultancy and service.

    Could you please advise us the warranty process for these cases?

    Thanks

    Diem - Hoang Bao Khoa Company

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    • hoangbaokhoa
      RexBeckett

      @hoangbaokhoa 


      Hello Diem, welcome to the community.


       


      I expect that the warranty procedure would be the same as for any other owner of a Music Tribe product. The product owner can open a Care ticket for an in-warranty Service Request. This is done by clicking on the Support menu at the top of this page and then clicking the + Create a Care Ticket button. This is only possible when all required fields in the member profile have been completed.


       


      When the Care ticket is raised, the requestor should get a confirmation email with a Care case number. The response may take some days. There have been cases where the responses have been lost in email spam folders.
      • December 25, 2019
    • hoangbaokhoa
      hoangbaokhoa

      Dear Rex,



       


      Thanks for your response.


       


      How about the case the product owner did not have / keep the Proof of Purchase to submit in the procedure.


       


      Thanks


      Diem
      • December 25, 2019
    • hoangbaokhoa
      RexBeckett

      @hoangbaokhoa wrote:


      Dear Rex,



       


      Thanks for your response.


       


      How about the case the product owner did not have / keep the Proof of Purchase to submit in the procedure.


       


      Thanks


      Diem



      @hoangbaokhoa 


      Hello Diem, 


       


      I am not a representative of Music Tribe so I have no special knowledge of their policies. I can only suggest that the product owner raises a Care ticket and includes an explanation of the situation. 


       


      Music Tribe representatives (Tribers) do sometimes monitor this community but the Care ticket system is the primary means to request support.
      • December 25, 2019
  • jboehme
    Contributor - Level 1
    2019-12-13
    LAB- Gruppen Controller on Mac OS Catalina | Power Amplifiers

    Hey, the LAB Control Software for Mac OS Catalina do Not work. When the new Version Come out?

    I need it so soon as possible!

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    • jboehme
      AlexLane

      Hi @jboehme 


       


      Could you confirm which software you are reffering to? Do you mean the device control software used to monitor C and FP series amplifiers?



      Thanks,


       
      • December 15, 2019
    • jboehme
      jboehme

      I mean the LabGruppen Drive Controller for IPD1200 and IPD2400 Amps.
      • December 19, 2019
  • RileyCasey
    Contributor - Level 2
    2019-11-26
    IPD amp DSP app - is there a way to copy & paste settings between channels? | Power Amplifiers

    Well this is a busy forum isn't it?  Does anyone know of a way to copy and paste DSP parameters such as EQ and limiters between channels on the IPD control app?  I'm using the Mac and iPad versions and don't see this option.  Is it available perhaps in the Windows version?  

    Is there a better forum for this sort of question?  This one seems fairly low traffic.

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    • RileyCasey
      AlexLane

      Hi @RileyCasey,


      My apologies for the late reply here.


       


      There is not a direct copy and paste feature but if you are trying to achieve matched channels, a stereo pair of speakers for example, then you can link channels and everything programmed on channel one will be copied onto channel 2 (with shared control for both channels).


       


      There are two link options found on the "Levels" tab, one for input stage and one for output stage. See attached picture.


       


       


       

      IPD Link.PNG
      • December 9, 2019
  • walford1
    Contributor - Level 1
    2019-11-21
    Amp breaking down | Power Amplifiers

    My amplifier has been sent to you for repairs and returned as no fault found but the audio keeps dropping out. I have a video showing the malfunction. Another tech offered to fix it but my amp is under warranty and i think it unfair .

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    • walford1
      AlexLane

      Hi @walford1 ,


       


      Sorry to hear about your amplifier issues, could you link me to the video please?


       


      It would also be helpfull to know a bit more information regarding the setup, is there anything else in the signal chain? Specifically which model amplifier is it?


       


       
      • December 9, 2019
  • DittenLerooij
    Contributor - Level 2
    2019-10-14
    KS21 | Power Amplifiers

    Does anyone know when the preset for the L' acoustic KS21 will be released?

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    • DittenLerooij
      AlexLane

      Hi @DittenLerooij ,


       


      If regarding IPD series amplifiers...


       


      Unfortunatly the IPD2400 is a little underpowered for the KS21, you would likely find the amp starts to drop power with sustained use driving KS21.


       


      If regarding LAKE amplifiers...


       


      I would like to get the KS21 preset into the loadlibrary, however the process requires measuring the manufacturers speaker to create a preset from scratch or measuring another amplifier output to create a clone. This is due to the data not being readily available online or from the manufacturer.


      It is on my radar to get done when possible, unfortunatly I cannot give you an estimate of when this might be done for you. 


       
      • December 9, 2019
    • DittenLerooij
      DittenLerooij

      Hi Alex,


      I did a quick measurement and have a base ready for use on my 5K44, but still need to set limiter settings.


      I only have Smaart to measure, no equipment to measure amp outputs unfortunable...
      • December 9, 2019
  • Mattb1978
    Contributor - Level 1
    2019-06-06
    L’acoustics preset | Power Amplifiers

    Does anyone have the l’acoustics x12 presets for the IPD2400 please?

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