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Thread: Spendor BC1

  1. #21
    Join Date: Feb 2008

    Location: Middlesex, UK

    Posts: 4,031
    I'm Alex.

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    Quote Originally Posted by DSJR View Post
    Was there a carcinogenic element in the surround material which was the main reason why it was abandoned?
    Might have been the adhesive used, that sort of rings a bell!
    Spendorman

  2. #22
    Join Date: May 2008

    Location: A Strangely Isolated Place in Suffolk with far away trains passing by...

    Posts: 14,560
    I'm David.

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    Quote Originally Posted by hifi_dave View Post
    I understood it was because of the sag problem.
    I could be wrong, but I don't seem to remember these things sagging en masse until they were ten or so years old???????
    Tear down these walls; Cut the ties that held me
    Crying out at the top of my voice; Tell me now if you can hear me

  3. #23
    Join Date: Apr 2009

    Location: Near Saffron Walden, Essex

    Posts: 6,571
    I'm Dave.

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    I had one of the first pairs to be fitted with the Coles and the bass driver sagged after 18 months or so. The replacement and the other one sagged some time after. I only had them for five years in total.

  4. #24
    Join Date: Dec 2010

    Location: Northampton

    Posts: 1,370
    I'm Mark.

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    My Dm2's haven't sagged. Sound lovely too.
    Mark

  5. #25
    Join Date: Feb 2008

    Location: Middlesex, UK

    Posts: 4,031
    I'm Alex.

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    I suspect that it is a matter of temperature, UV exposure, humidity, manufacturing variations, and luck! etc. etc.

    I have quite a few white surround BC1 bass /mids that are still usable. In fact, I think all are. Probably three pairs of white surround BC1's.
    Spendorman

  6. #26
    Join Date: Feb 2008

    Location: Middlesex, UK

    Posts: 4,031
    I'm Alex.

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    Quote Originally Posted by Dingdong View Post
    My Dm2's haven't sagged. Sound lovely too.
    Different type of surround, more rubber like, only way I got a DM2 bass unit to sag was when I accidentally trod on the cone of one when the unit was on the floor. It did damage the voice coil former though.

    Managed to take unit apart straighten out former and speaker works.
    Spendorman

  7. #27
    Join Date: May 2008

    Location: A Strangely Isolated Place in Suffolk with far away trains passing by...

    Posts: 14,560
    I'm David.

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    Quote Originally Posted by hifi_dave View Post
    I had one of the first pairs to be fitted with the Coles and the bass driver sagged after 18 months or so. The replacement and the other one sagged some time after. I only had them for five years in total.
    Well, we're both feeling the effects of saggy bottoms now, ain't we squire
    Tear down these walls; Cut the ties that held me
    Crying out at the top of my voice; Tell me now if you can hear me

  8. #28
    Join Date: Apr 2009

    Location: Near Saffron Walden, Essex

    Posts: 6,571
    I'm Dave.

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    Speak for yerself, mine's taut and perky..

  9. #29
    Join Date: Jan 2008

    Location: Witney Oxon

    Posts: 830
    I'm Martyn.

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    Quote Originally Posted by hifi_dave View Post
    Exactly - the very early white drivers had far better mid than the later black ones.

    Unfortunately, the white ones had the dreaded sag, as the material reverted to its natural flat form..
    My early BC1s ( Serial Nos. 6703/04 ) had white roll surrounds which were affected by the hot summer of ‘76.
    Later in the year Spendor fitted replacement drivers with black surrounds.
    Years later one of those started fouling and I inverted the driver to solve the problem.
    The BC1s were later sold, for personal reasons.

    Sometime later a pair came up for sale with one non-working bass/mid. driver.
    I took a chance and bought them. It was a fractured braid to the voice coil which was reasonably easily repaired.
    This pair has Serial Nos. 10203/4, so are a fair bit younger than my original pair.
    I know aural memory can be suspect, but this later pair do sound better than the original BC1s.
    In fact, I will never change them.
    They have a certain ‘way’ with the type of music I play and no comparable speakers I’ve tried betters them...

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