Philips LBB9050/05 Dual Capsule Dynamic Microphone 1970

 Philips LBB9050-05

 Philips LBB9050-05

Philips LBB9050-05

Launched in 1970 the LBB9050/05 was Philips flagship dynamic microphone, and was heralded in Philips literature as being a ‘revolutionary new design incorporating high and low frequency systems’. However, a small amount of research reveals more than a passing similarity in technical specifications between the LBB9050/05 and the popular D200 series of microphones by AKG, which had been around for several years.

Philips LBB9050-05

The mystery unravels further, and the true origins of this microphone become clear when we observe the words ‘Made in Austria’ on the packaging, the storage case, and on the microphone itself. Michael Amon, top technician at AKG for 30 years, has confirmed to me that the LBB9050/05 was indeed made by AKG for Philips in 1969.

Box for Philips LBB9050/05

 Philips LBB9050-05 Bass Capsule Ports

Picture above shows Tuchel socket, and ports for the LF capsule.

The Dual Capsule Design.

The original Austrian patent dates from 1960. The full specification appears in the English patent registered by AKG in 1965, and shown below. This makes an interesting read if you want to understand how this clever piece of technology works.

Original AKG Patent for Dual Capsule Microphones

Philips Advertising Leaflets Courtesy of Philips Company Archives.

LBB9050 microphone,

leafletLBB9050 microphone, leaflet, 1971

So What Does It Sound Like CLICK HERE for a short clip of Blues Guitar

In Conclusion

Just like its AKG cousins the D200, D202, D222 and the D224, the Philips LBB9050/05 is a serious quality professional microphone, exhibiting a wide frequency response, tight cardioid polar pattern, and no proximity effect.  Sadly, these days it is much less well known than the AKG models.  But maybe Philips is to blame? If you were to choose a completely unmemorable name for a product you really couldn’t do better than to call it the LBB9050/05!  Two minutes from now you will probably have forgotten it!


6 responses to “Philips LBB9050/05 Dual Capsule Dynamic Microphone 1970

  1. therealtomwinter

    Every time I get a /Martin Mitchell’s Microphones Mail/ my day is lit up THANK YOU, Mr.Mitchell, for having me on your mailing list 🙂

    Greetings from Tom, collector of 50s+60s table microphones amateur/semi-pro……Grundig GDM12 – “timeless” design AND pretty cool blues-harp mic (maybe not quite as cool as the “green bullet”)……Sennheiser MD4303 (nice on a snare, though maybe not quite as lekker as the AKG C414!)

    Thanks Martin! :-)tom


  2. Hi Martin, nice article. You have just bumped up the used price for these! 🙂

    Liked by 1 person

  3. Hi Martin,

    Thanks for your article i can eventually put a name on what i have found in my parent’s attic 🙂
    I think the microphone i have found might still work but i can’t find what kind of cable to use, unfortunately it doesn’t fit standard xlr cable, do you have any clue what kind of connector it requires?
    I have found a site where i can buy an adapter but i’m not sure if it would fit (here is the link :

    Could you please tell me what adapter you are using?

    Thanks in advance.



    • Hi Sacha, I assume that the connector on your mic looks exactly the same as the one in the last photograph on my blog post? The 3 pins are smaller than an XLR and the outer sleeve is threaded. This type of connector is a Tuchel connector. These came in two sizes, large (Grosse) and small (Klein) . This mic has a Klein Tuchel connector. So yes, the item in your link is the right connector. Just take care not to cross thread the knurled locking ring when doing it up. Sometimes the thread on the mic is a bit worn.
      Good Luck.


      • Hi Martin,

        Thanks for your reply.
        Yes I confirm, it looks exactly the same.
        I will buy this adapter, i can’t wait to test it, I will let you know how it goes 🙂

        Thanks again.




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