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  • Gasper
    Contributor - Level 1
    2020-02-02

    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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    0 370
    • 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
    • Gasper
      MrPaulDavidThomas I'd like to know how you get on with your JBL 4645C's. Alas the answer you got didn't really help as far as I can see :-(
      • Tue at 5:00 AM
  • New
    Lab Gruppen
    Triber Moderator
    2021-12-01

    E Series
    bit.ly/Lab-Gruppen-E-Series

    Learn More: https://www.youtube.com/watch?v=xoIFBMcoZN8

    Amplifiers with Flexible Output Channels and Energy Star Certification for Installation Applications

    From: $2,399

    #LabGruppen #E204 #E404 #ESeries #PowerAmplifiers

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    0 2
  • New
    sonidoduarte
    Newcomer - Level 1
    2021-11-20

    Hello, I have a sound reinforcement business in Guayaquil-Ecuador South America.  I need to buy parts to repair an FP7000 LAB GRUPPEN AMPLIFIER.  Where can I find a dealer to sell me the parts?

    Thanks

    https://www.facebook.com/pg/SonidoDuarteEc/videos/

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    0 5
    • sonidoduarte
      KyleJohnson Hello, Kyle here with Music Tribe. Please contact our Parts team. To do so, click on Support and then Spare Parts to submit a ticket.
      • Nov 21
  • New
    Lab Gruppen
    Triber Moderator
    2021-11-03

    IPX Series
    bit.ly/Lab-Gruppen-IPX-Series

    The Lab Gruppen IPX Series Power Amplifiers with DSP and Mobile Apps are designed to serve our Live Portable Sound and Installed Sound Customers.

    From: $1,199.00

    #LabGruppen #IPX1200 #IPX2400 #IPXSeries #PowerAmplifiers

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    1 25
  • New
    kennykennedy
    Newcomer - Level 1
    2021-11-15

    Hello guys. I have a situation here.. I live in Cambodia at the moment and I have this beautiful amp from Lab Gruppen.

    Model FP10000Q. I had some issues with it and I got it fixed but... we have lost one of the parts :( it's a side panel.

    Can anyone help me get it here? I'm trying to make it but it's not that easy. Could I order it from somewhere somehow??

    Please help me. I need to fix it.

    Thanks in advance.

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    0 9
    • kennykennedy
      NicJonesMT Hi There.
      If you click support at the top of the page and submit a Spare Parts ticket, a member of the team will be able to assist you.
      • Nov 15
  • New
    EightyHD
    Newcomer - Level 1
    2021-11-13

    Hi,

    All my old email addresses and contacts at Gruppen get bounced?? Mind you its been some time requesting info.  Ive joined up the music tribe now do hopefully there is somebody is willing to help me.

    I run a service repair business in victoria Australia.
    I currently have a E-Series power amps from a church install from NSW which are obviously out of warranty. I have a temperature related issues where CH2 after 15 minutes begins to splatter and eventually cuts out.  Led signal indictors shows valid Signal although when the level is increased on the faulty channel the amber limit led flashes. Can hear the level although its very very low. I’ve tried freezing components on the signal board however i believe its Class D issue not confirmed as yet.
     
    I’m making a 8-way IDC signal input extension cable to swap channels to determine if its signal board is the issue or its the class D amp? Parts on order to do this.
     
    I was hoping to get a service manual to make things easier to track the fault down with the oscilloscope.
     
    Im happy to sign a confidentiality agreement if that works? Have done for many other brands in the past.
     
    Hope your able to help.
     
    Many thanks
     
    Rob 
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    0 12
    • EightyHD
      Nigel67 Hi EightyHD. I am very sorry, but it is against Company policy to send out Service manuals to any one apart from our partners and repair centres. Australis Music Group in Sydney are our repair centre in Australia.
      • Nov 14
    • EightyHD
      EightyHD

      Thanks Nigel67 for you answer. I was expecting some response to say we have one and only service centre for the whole of Australia. Glad this approach isn't upheld for an imported car as you'll have to transport it to Sydney and wait 6 months to have it repaired, I feel the ideology behind one service center "Music Group" for every known product on the music tribe list is short sighted and not in the best interests to the products customers? Then again, does Lab Gruppen or product X actually notify in writing if their product develops a fault 'out-of-warranty' it can't be repaired locally? Please reconsider, as I've expressed initially to indicate I'm happy to sign a CA on a service manual just as I did with FP series way back? In addition, why do I have to sign-up with Music tribe just to be able to communicate with Lab Gruppen..? I'll try my best to request the info from Music Group however I'm guessing a similar response, that they don't give service info to the public? Abet being a business and service tech for the last 30 years in the broadcast industry. Thanks anyway.. Failing this, I'll have to nut it on my own :-)

      • Nov 15
  • PeterH
    Triber
    2021-11-03

    We are replacing the tried and trusted IPD series of DSP-controlled power amplifiers with a new, improved breed of raw power and ultimate control solutions. This move is part of a general strategic leap forward that will benefit you, starting…. Right now!  

    You probably know the feeling: You are planning some fundamental changes, but the time just never seems to be perfect for actually making the big move. But then something unforeseen happens, and suddenly everything aligns, which causes you to pull the trigger on opening a new chapter in your life. That was exactly what happened to us – both specifically when deciding to discontinue the renowned IPD series of power amps and introduce the IPX series, but also on a higher level, as we decided to turn our Swedish facility into a dedicated research and development power house that will be focusing entirely on what they do better than anyone: Design and develop unparalleled amplification and digital signal processing for the future!

     

    Making the Most of an Unfortunate Situation

    As is often the case, unfortunate events tend to occur in quantity. Obviously, 2020 was an unusual and challenging year on a number of levels. First and foremost, the global Coronavirus pandemic took us all by surprise and caused unfathomable human distress across the globe, yet the acute situation also taught many of us new things such as optimizing our collaboration-on-a-distance skill set.

    Fortunately, when entering 2021 it seemed like there was a good chance that things would gradually begin to move back to normal. However, the combination of the pandemic, natural catastrophes and a fire that had consequences throughout the pro audio industry caused severe supply chain problems and skyrocketing freight rates – not just for us, of course, but generally and globally.

    These were the elements that ‘suddenly aligned’ and gave us confidence that now was the time to make some real changes. Transition phases are always painful to some degree, but they are also necessary, and we felt wholeheartedly that it was absolutely the right thing to do – so why wait?

     

    The IPX Move into The Future

    While the IPX series looks very similar to the IPD series that it is replacing, there are indeed a host of improvements to be found under the hood. For instance, the DSP has been upgraded and is prepared to integrate seamlessly with future audio and control protocols.

    Along with sister companies such as TC Electronic and Midas, we have always been a first mover in terms of adopting new technologies, as well as developing them, and this case is no exception. We consider it as a huge benefit to audio professionals when manufacturers across the board agree on standardization and harmonization in order to make your job easier. Therefore, we are pleased to announce that IPX is your bullet-and-future-proof power amp solution. However, this fundamental change of the DSP design also means that IPX is not backwards compatible with the IPD series.

    Further, while specified at the same power ratings as the IPD series (1,200 W and 2,400 W), the new IPX series is more power efficient, and they deliver more power at lower impedance loads. And last but not least, they have a lighter environmental footprint due to their improved power factor load, making them more efficient in terms of sheer electricity consumption.

     

    The Collaborative Move into The Future

    As already mentioned, 2020 turned out to become a year of remote work optimization. However, since Music Tribe has been a global organization for decades, collaborating across country borders and time zones was definitely far from new to us. Along with other factors that pushed in the same direction, we decided to make the move for Lab Gruppen in 2021, ensuring that the engineering staff in Kungsbacka, Sweden, is now allowed to dedicate its every moment of attention to developing, refining, rethinking, improving and designing new products and cutting-edge technologies that will help you stay ahead of the curve.

    This means that production has started taking place in Asia, which may cause concern to some, but please rest assured that you will not experience any changes in terms of quality, sturdiness and reliability. The number one mistake Western companies make when moving production to Asia is more than anything to have missed out on doing their homework properly – on a cultural as well as a practical level. Well, Music Tribe has been present in the region for ages. In fact, far longer than e.g. Apple and other huge consumer goods manufacturers that we have all accepted as high quality vendors long ago. It cannot be stressed enough that this is not a new process of change for us, or a first attempt at dipping the toes in new waters – we have decades of experience with how to manufacture efficiently and reliably out of Asia. And perhaps most important of all, we have a proven track record of successful Pro Audio and MI brands to back our beliefs that this will indeed become very beneficial for all of our customers.

    At the end of the day, all that really matters is providing the finest audio tools imaginable, which in turn empowers you to focus exclusively on delivering stellar results as an passionate audio professional every single day – regardless of whether your field of work is within Touring, Venues, House of Worship, Corporate, Education, or other parts of the Live Sound and AV Install spheres.

     

    Check out our video here: https://youtu.be/Rzg7x7jwgYo 

     

     

     

     

     

     

     

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    1 671
  • New
    dBzero
    Newcomer - Level 1
    2021-10-15

    I have 3 x IPD 2400 in a rack which had not been used since March 2020. When I set up last night the rack with the 3 amps tripped the circuit breaker for the ring main (32A) . I tried connecting each amp on its own but the fault persisted. Will these amps draw more current when they havn't been in use and the power supply capacitors will have discharged? I had to use the house powered speakers which is not ideal. I have used these amps in this venue many times before without any trouble. Has anyone else had this problem?

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    0 6
  • New
    Rouziere
    Newcomer - Level 1
    2021-10-15

    Hello,

    I have a problem with a LAB Gruppen PLM12K44 amplifier, it doesn't light up at all.
    I bought it in 2017/2018.
    I am looking forward to hearing from you about the procedure to follow.

    I am looking forward to hearing from you.

    Adrien Rouziere

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    0 6
  • New
    BTDGermany1
    Newcomer - Level 1
    2021-10-11

    Hey Team, 

    we are running in our theatre 6 IPD1200, all of them via Cat7 for Remote Control. After updating our system to MacOS Big Sur, the IntelliDrive won't let me control the remote. The IntelliDrive is crashing after starting. After checking the terminal I know now, that the IntelliDrive try to start with Python 2.7. But BigSur need Python 3.xxx, cause it is the newest one. 
    i cannot find any software for MacOS BigSur. 
    Is there any solution for this? 

    greets Marco Boulevard Theatre Germany

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    0 12
    • BTDGermany1
      BTDGermany1 Hey Guys, I really need a solution for this problem. Is there no way for a workaround or a new Mac software update?
      • Oct 13
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