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ARCHIVED FORUM -- April 2007 to March 2012
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This is the first Archived Forum which was active between 17th April 2007 and 1st March February 2012

 

Latest post 11-17-2011 6:31 AM by dmacri. 8 replies.
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  • 08-08-2011 10:09 PM

    New Member BM 7000 question

    After enjoying my BS 2500/BLab8000 system for years, I just found you folks...was not looking until I purchased a used 7000 system 2 weeks ago.   I'm working through some small problems, but you folks seem to have the answers, i.e. BL 7000 no contact = capacitors, Tape deck warble is the brakes...time to get my screwdriver and soldering iron out...

    Here is my question, which I cannot find with the search...

    What kind of connector does the BM 7000 use for the FM connection?  The one from my BS 2500 does not fit.   Where can I purchase the connector? 

     

  • 08-08-2011 10:40 PM In reply to

    • mediabobny
    • Top 200 Contributor
    • Joined on 04-19-2007
    • Greenwich Village, NYC
    • Posts 336
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    Re: New Member BM 7000 question

    I get good results from one of these simple dipole types.  Make sure you buy the one with the female connector.

    Welcome to Beoworld!

  • 08-08-2011 11:37 PM In reply to

    Antenna Impedance?: New Member BM 7000 question

    Thanks!  Female PAL is the answer then.  

    What is the impedance supposed to be for B&O FM antennas?

  • 08-09-2011 12:13 AM In reply to

    • mediabobny
    • Top 200 Contributor
    • Joined on 04-19-2007
    • Greenwich Village, NYC
    • Posts 336
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    Re: Antenna Impedance?: New Member BM 7000 question

    75 ohm(?)  But don't quote me on this.

  • 08-09-2011 3:25 AM In reply to

    Re: Antenna Impedance?: New Member BM 7000 question

    mediabobny:

    75 ohm(?)  But don't quote me on this.

    Correct. Older receivers may have the 300 ohm FM antenna socket as well, with two side-by-side connectors. 7000 doesn't, the similar looking connector is for AM.

    I think this round connector is most commonly called PAL in the US. The official name is IEC 60196-2, "IEC antenna plug" for short, and "Belling-Lee" in some places.

    (The product in the fleaBay link is technically a folded dipole, which should be matched to 300 ohms - but this doesn't matter much in practice. I'm sure it'll work well for all but the weakest stations, for which you should rather have an outdoor antenna anyway!)

    -mika

  • 08-09-2011 1:03 PM In reply to

    • Rich
    • Top 50 Contributor
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    • Joined on 07-10-2010
    • Orlando, Florida, USA
    • Posts 1,089
    • Gold Member

    Re: Antenna Impedance?: New Member BM 7000 question

    tournedos:

    (The product in the fleaBay link is technically a folded dipole, which should be matched to 300 ohms - but this doesn't matter much in practice. I'm sure it'll work well for all but the weakest stations, for which you should rather have an outdoor antenna anyway!)

    I have no experience with a BM7000, but a folded dipole has worked well enough for me connected to the 75 ohm socket of a BM1900, BM2400, and BM4000.  Those folded dipoles - and a few other things as well - were purchased from "lazerwave," the seller in the link.  "Lazerwave" is a quick shipper and his items are always exactly as described.  Have always given top rated feedback on transactions with him.

    Current primary listening:  SMMC20EN -> BG4002 -> BM4000 -> Beovox M70

     

  • 08-09-2011 1:06 PM In reply to

    • Rich
    • Top 50 Contributor
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    • Joined on 07-10-2010
    • Orlando, Florida, USA
    • Posts 1,089
    • Gold Member

    Re: Antenna Impedance?: New Member BM 7000 question

    One other fairly off-topic note:  I was working on my best BM2400 the other day and was receiving stereo FM signals without any antenna hooked up at all.  You gotta love B&O receivers.  Big Smile

    Current primary listening:  SMMC20EN -> BG4002 -> BM4000 -> Beovox M70

     

  • 08-09-2011 1:16 PM In reply to

    Re: Antenna Impedance?: New Member BM 7000 question

    On my BM 2400 I use an alligator clip with a 50 Cm cable strip

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 11-17-2011 6:31 AM In reply to

    Re: Antenna Impedance?: New Member BM 7000 question

    My Beocenter 3500 works with just the base of the antenna - the elements had been broken off years ago.

    BeoSystem 5000 (BM 5000, BG 5005, BC 5000, CD50), BeoCenter 3500, BeoCenter 2500, BeoLab 2500, BeoVox S-45, S-45.2, RL-140, CX-100, CX-50, C-75, 3 MCL82 link rooms, A8, 4001 relay and ambio 

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