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Bose Wave Radio 9kHz AM spacing?

Discussion in 'Electronic Repair' started by Esmond Pitt, Apr 16, 2007.

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  1. Esmond Pitt

    Esmond Pitt Guest

    Does anybody know (a) how to *open* a Bose Wave Radio ;-) and (b) how to
    make the adjustment above? The unit was bought in the USA where AM
    interstation spacing is 5kHz but here it is 9kHz so the AM band is
    basically useless. Bose service is probably not an option here.
     
  2. Bose is a POS anyway, but I bet there is no way to do what you want. I'm
    sure the interstation spacing is programmed into a chip in the set.

    http://www.smarthouse.com.au/Real_Hi_Fi/Radio/T8J4C9W5

    http://www.pcmag.com/article2/0,1895,2097317,00.asp

    http://www.intellexual.net/bose.html

    http://www.howardforums.com/archive/topic/953718-1.html

    "Bose is for people with more money than sense."

    http://www.digg.com/hardware/Why_Bose_Sucks!

    http://forums.cnet.com/5208-7596_102-0.html?forumID=60&threadID=143951&messageID=1612036

    Search for (don't buy bose)
     
  3. Arfa Daily

    Arfa Daily Guest

    For a start, there have been 4 versions of the Wave Radio. I'm assuming that
    we are talking the latest here ? I had a look at the service manual, and it
    makes no mention of being able to change the AM tuning steps, so I think tat
    you are on a hiding to nothing here. The system control micro does supply
    data to the PLL, and it is a mask programmed device, so I'd bet that it is
    one dash number for the US market, and a different one for other
    territories. Sorry.

    Arfa
     
  4. Guest

    You will not be able to alter the radio to receive Euro-spacing AM
    stations. First, that is masked into the chip, second that chip will
    not be on a socket, so changing it and all other adjustments would be
    a major PITA. This is assuming you find the chip in the first place.

    That being written, there is a simple solution if you *must* have AM
    and you *must* use that radio. Ultimately, it will be cheaper as
    well.

    Obtain a small AM transmitter, I strongly recommend the SSTRAN
    AMT-3000 for the purpose. Be sure you tell Phil that you want the US
    spacing - he sells it both ways. Then use a cheap tuner to feed the
    SSTRAN, use that to feed the Bose. The added advantage is that this
    transmitter will cover your entire house with ease, so it need not be
    right next to the radio. With some care and an outboard antenna, it
    will do a dozen acres or more. At ~US$100, it is a bargain. If your
    cheap tuner has FM and long-wave as well, then your Bose can receive
    whatever is broadcast locally beyond its otherwise limited capacity.

    http://www.sstran.com/

    I keep this one and a small FM-stereo transmitter around. With these
    two, my modest collection of vintage radios and audio equipment is
    digital-proof.

    Last question: are you 50uS or 75uS de-emphasis? If you are 50, the
    Bose will sound a bit twitchy-chirpy as it is 75.

    Peter Wieck
    Wyncote, PA
     
  5. Meat Plow

    Meat Plow Guest

    Not possible. Buy a Grundig YB400PE.

    --
    #1 Offishul Ruiner of Usenet, March 2007
    #1 Usenet Asshole, March 2007
    #1 Bartlo Pset, March 13-24 2007
    #10 Most hated Usenetizen of all time
    Pierre Salinger Memorial Hook, Line & Sinker, June 2004
    COOSN-266-06-25794
     
  6. Esmond Pitt

    Esmond Pitt Guest

    Thanks for all the relevant answers.

    No thanks for the others, they were strictly off-topic. The unit isn't mine.
     
  7. Consider yourself lucky in that case.
     
  8. JANA

    JANA Guest

    From what I remember, the inter-spacing between the stations on your radio
    is part of the internal firmware in the uPC chip.

    By-the-way, North American stations are spaced 10 kHz apart, not 5 kHz
    apart!

    As for your FM reception, the EQ is different between Europe and North
    America. The frequency response and noise suppression of the FM will be a
    little out of specs.

    --

    JANA
    _____


    Does anybody know (a) how to *open* a Bose Wave Radio ;-) and (b) how to
    make the adjustment above? The unit was bought in the USA where AM
    interstation spacing is 5kHz but here it is 9kHz so the AM band is
    basically useless. Bose service is probably not an option here.
     
  9. Esmond Pitt

    Esmond Pitt Guest

    Once again this is not relevant to my question. Try rec.audio.something
    if you want to post this sort of thing. I thought I'd get some sanity
    over here. Sorry to find I'm wrong.
     
  10. Hi!
    I doubt that the change will be easily implemented. However, I would
    definitely try Bose customer service in your list of possible ideas. They
    might offer a straight up trade for the unit or maybe even offer a pro-rated
    exchange.

    While I can't offer any advice on taking the unit apart, if and when you do,
    carefully examining the circuit board may reveal some method of changing the
    frequency steps for the AM band. In the best case, there might be a soldered
    shunt or jumper bridge over a set of terminals to direct the microcontroller
    as to what set of tuning instructions it should follow.

    William
     
  11. You are wrong because you are a prick. So piss off.
     
  12. I have no knowledge of this unit, but the FM spacing may also be a
    problem for US spec units used in Europe. The US FM spacing is 200
    kHz, and in Europe it is 100 kHz.

    I found this out after importing a US car to Sweden, and in my home
    town we have a transmitter on 96.6 MHz, which could not be received on
    the radio in the car.

    Frequently car (japanese) stereos can be software configured for 200
    or 50 kHz FM spacing. Perhaps the same thing is applicable here?

    I believe my home cinema receiver can also be configured for different
    spacing using a service mode menu.

    Thomas
     
  13. Arfa Daily

    Arfa Daily Guest

    Please don't get arsey. You did get some sensible answers, for which you
    thanked the posters concerned, which is appreciated, but in the same
    sentence, you 'had a go' at the couple of people who were just having a bit
    of fun with you. Although I service Bose gear for a local dealer, and don't
    have any real problem with it, if you knew anything about the service
    business, you would also know that their equipment comes in for a lot of
    fun-poking. Homer and Meat are two long term and valid contributors to this
    group, and if you come here regularly, you would know that and accept that
    their comments were just throw-away humour ...

    Arfa
     
  14. Meat Plow

    Meat Plow Guest

    Sorry to see you're such an ass. Your friends radio can't be converted so
    get over it already.

    --
    #1 Offishul Ruiner of Usenet, March 2007
    #1 Usenet Asshole, March 2007
    #1 Bartlo Pset, March 13-24 2007
    #10 Most hated Usenetizen of all time
    Pierre Salinger Memorial Hook, Line & Sinker, June 2004
    COOSN-266-06-25794
     
  15. Andy Cuffe

    Andy Cuffe Guest

    It will depend on which version you have, but I know the wave radio cd
    can be changed. There's no easy step by step instructions in the
    service manual, but there are various jumpers and resistors that are
    different between the US and European versions of the wave/CD. The
    micro controller is the same.

    The only way to know how to change yours is to buy the service manual
    and see which parts are listed as being different for different
    locations.
    Andy Cuffe

     
  16. Esmond Pitt

    Esmond Pitt Guest

    Given what came subsequently, that clearly isn't an adequate description.

    Although I service Bose gear for a local dealer, and don't
    I do know that, and I do it myself in other places. I just don't regard
    it as relevant in this case. When I ask a repair question in group
    called sci.electronics.repair I think I'm entitled to object to answers
    that aren't about repair. Responses that make assumptions that it's a
    repair-or-replace decision, or that the unit is mine, or state that some
    imagined personal attribute of mine implies that I am wrong, are merely
    illogical. This is a 'sci' group - doesn't that mean science?
     
  17. No, you aren't. This is a public wall and anyone can piss on it. Deal with
    it.
     
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