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Thread: Bolivar Speaker Works Model 125

  1. #1
    Join Date: Jul 2010

    Location: Newbury

    Posts: 702
    I'm RichardbutpreferRich.

    Default Bolivar Speaker Works Model 125

    I recently acquried these Bolivar 70's vintage speakers in need of some restoration off fleabay. As the seem to have been a relatively obsucre short lived brand I thought I'd post some photos as point of reference.

    Manufacturer: Bolivar Speaker Works (Offshoot of JBL\Harmon)
    Yr of Manufacture: 1975-1980 (ish)
    Model: 125
    Type: 2-Way - 8" Woofer - Paper Cone Tweeter
    Dimensions: H23"(58.5cm) W12.5"(32cm) D10.5"(26cm)
    Weight: 12kgs
    Impedence:4ohms
    Power Rating: Unknown
    UK price when new: Unknown


    Grill Badges are wood which is a nice touch


    Cabinets were foil wrapped to reduce cost




    Cabinet back


    Flimsy spring loaded binding posts
    Last edited by Mothman; 11-01-2011 at 07:34.
    Rich

    Source: Squeezebox Touch, Chinese AK4396 DAC, Pioneer PL-112D + Shure M75ED type2, Pioneer PD-7700 CDP
    Amp: Sansui AU-505
    Speakers: Ditton 44's

  2. #2
    Join Date: Jul 2010

    Location: Newbury

    Posts: 702
    I'm RichardbutpreferRich.

    Default Part 2

    Substantial, well made grille frames


    Unmasked. The blue foam on the tweeters has had it, but hope it is only cosmetic


    Woofer cleaned ready for new surround




    Close up of a tweeter, the blue foam removed


    Inside the cabinet


    The few references I can find to this model say it was manufactured with no crossover, if so then what's this?
    Rich

    Source: Squeezebox Touch, Chinese AK4396 DAC, Pioneer PL-112D + Shure M75ED type2, Pioneer PD-7700 CDP
    Amp: Sansui AU-505
    Speakers: Ditton 44's

  3. #3
    Join Date: Jul 2010

    Location: North Cambs UK, Earth, Sol, Orion - Cygnus arm of galaxy

    Posts: 11,166
    I'm MadeOfDeadGiantStarsThatExplodedEonsAgo.

    Default

    Looks like a crossover

    Decent sized magnet on the bass/mid, that's the expensive bit, i guess these are promising
    Bests, Mark



    "We must believe in free will. We have no choice" Isaac Bashevis Singer

  4. #4
    Join Date: Jan 2009

    Location: Truro Cornwall

    Posts: 28
    I'm Andy.

    Default

    I had a pair of Bolivar 64s from new in the late 70s. They were the 3 way version with the 10" bass driver. They were actually very good speakers especially if raised off the floor on low stands.
    If you get the bass driver re foamed they should be good.
    I think the 64s were around the 100 mark back then.
    Andy.
    Last edited by pentode10; 11-01-2011 at 18:31.

  5. #5
    Join Date: Nov 2010

    Location: Chorley, Lancs

    Posts: 2,734
    I'm Mike.

    Default

    The Cabs look in good nic too, get the cones refoamed or do it yourself and you should have a nice pair of rare speakers


    As the late Colonel Sanders once said
    "I'm too drunk to taste this chicken!!"

  6. #6
    Join Date: Jul 2010

    Location: Newbury

    Posts: 702
    I'm RichardbutpreferRich.

    Default

    Never done it before but gonna have a go at the refoam myself. The speakers only cost a few sheckles so if I cock it up I won't lose much.
    Rich

    Source: Squeezebox Touch, Chinese AK4396 DAC, Pioneer PL-112D + Shure M75ED type2, Pioneer PD-7700 CDP
    Amp: Sansui AU-505
    Speakers: Ditton 44's

  7. #7
    Join Date: Nov 2010

    Location: Chorley, Lancs

    Posts: 2,734
    I'm Mike.

    Default

    Quote Originally Posted by Mothman View Post
    Never done it before but gonna have a go at the refoam myself. The speakers only cost a few sheckles so if I cock it up I won't lose much.
    It's all good fun, when you've done them post a thread on the forum detailing how you did it, take photos too, i for one would like to read about it.


    As the late Colonel Sanders once said
    "I'm too drunk to taste this chicken!!"

  8. #8
    Join Date: Nov 2010

    Location: Chorley, Lancs

    Posts: 2,734
    I'm Mike.

    Default

    the foam rings round the tweeters, maybe tweeter diffractors? read this http://theartofsound.net/forum/showthread.php?t=2113


    As the late Colonel Sanders once said
    "I'm too drunk to taste this chicken!!"

  9. #9
    Join Date: Jul 2010

    Location: Newbury

    Posts: 702
    I'm RichardbutpreferRich.

    Default

    Well my handywork wouldn't win any prizes in a beauty contest but I've refoamed the woofers and it appears to have been a success



    I reassembled the speakers and connected them to an old Sanui amp and these things sound great. There is loads of bass (probably too much for my small listening room) and the mids and highs aren't too shabby either for a two way speaker. Certainly not the last word in detail but then I wasn't expecting that from a pair of budget\mid price 70's speakers.



    Next I decided to connect them to my Hlly T-20 T-amp without much expectation, as I had assumed the Bolly's would need more juice to drive them than the Hlly could offer. Well what a surprise! these two make a wonderfull pairing, there is of course less bass with the Hlly but what bass there is is more controlled, mids and highs are also improved.

    These speakers have exceeded my expectations, I think DSJR described their sound as FUN and that is exactly what they are, a really most enjoyable unfatiquing sound that I would be happy to live with as my main system speakers. Well chuffed
    Rich

    Source: Squeezebox Touch, Chinese AK4396 DAC, Pioneer PL-112D + Shure M75ED type2, Pioneer PD-7700 CDP
    Amp: Sansui AU-505
    Speakers: Ditton 44's

  10. #10
    Join Date: Jul 2010

    Location: North Cambs UK, Earth, Sol, Orion - Cygnus arm of galaxy

    Posts: 11,166
    I'm MadeOfDeadGiantStarsThatExplodedEonsAgo.

    Default

    Looks like you did a decent job on the Rich At least they are actually usable now & apart from actually having learn't something new that may well be handy in the future, you can get them boogying

    Nicely done! I have messed about with speaers for years buy i have never refoamed a driver notworthy.gif


    All the best
    Bests, Mark



    "We must believe in free will. We have no choice" Isaac Bashevis Singer

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