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Thread: Celestion HF 1300 expert needed

  1. #41
    Join Date: May 2016

    Location: Birmingham, U.K

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    I'm Taz.

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    Found this on the web about early Radfords https://www.vintage-radio.net/forum/...ad.php?t=55859

    Post #10 is from a chap that worked at Radford in the 60's

  2. #42
    Join Date: Feb 2008

    Location: Middlesex, UK

    Posts: 3,051
    I'm Alex.

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    I sent your photo of the strange HF1300 grille to my friend that has some similar Radfords, he said that he can't see the metal grilles on his as there doesn't seem to be an easy way to remove the front cloth without damage. He also has a pair of Radford baffles containing B139 and HF1300's, those have the normal HF1300 metal grilles.
    Spendorman

  3. #43
    Join Date: Apr 2016

    Location: Bishops Stortford

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    I'm Chris.

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    Quote Originally Posted by spendorman View Post
    I sent your photo of the strange HF1300 grille to my friend that has some similar Radfords, he said that he can't see the metal grilles on his as there doesn't seem to be an easy way to remove the front cloth without damage. He also has a pair of Radford baffles containing B139 and HF1300's, those have the normal HF1300 metal grilles.
    Looks like Radford decided to not use the front plate to mount the drivers (presumably for sonic reasons), so they removed the whole assembly shown in the attached picture and replaced it with the more simple grille. They then anchored the drivers using the rear bracket and putty. I have to say that the tweeter assembly in place seems totally inner to vibrations when tapped.


  4. #44
    Join Date: Feb 2008

    Location: Middlesex, UK

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    I'm Alex.

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    From memory, the dome in you picture does not look like domes in 1300's that I have taken apart.

    They looked more like this:

    https://images.duckduckgo.com/iu/?u=...040344.JPG&f=1
    Spendorman

  5. #45
    Join Date: Apr 2012

    Location: Southall, West London

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    I'm Geoff.

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    Quote Originally Posted by spendorman View Post
    From memory, the dome in you picture does not look like domes in 1300's that I have taken apart.

    They looked more like this:

    https://images.duckduckgo.com/iu/?u=...040344.JPG&f=1
    That is correct. The HF1300 phenolic diaphragm is more or less conical and sits closely behind the phase correction grille which is also conical in profile.
    Mr. Tact!

    "when common sense, logic and plausibility are ruled out. All that remain are lies and foolishness"


    Gear: MMs/ADCs/Low output MC's/One rare Japanese SUT/one scarce British phono stage/various tonearms/two hefty Japanese DD TT's/hefty Japanese BD TT/smaller Japanese BD TT and small British BD TT. One CD transport/3 CD players/2 jitter buster/2 DACs/Valve buffer. One MD deck. One tuner. Two TVC pre-amps/two valve pre-amps/solid state pre-amp/passive pre-amp. Current dumping power-amp or either of two Class A SS power-amp or Class A EL34 valve monos or big Japanese (part Class A) integrated. Big dual concentric speakers/Smaller dual concentric speakers/two way British compacts and full range speakers, amongst others. And too much more to list!

  6. #46
    Join Date: Apr 2016

    Location: Bishops Stortford

    Posts: 507
    I'm Chris.

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    Quote Originally Posted by spendorman View Post
    From memory, the dome in you picture does not look like domes in 1300's that I have taken apart.

    They looked more like this:

    https://images.duckduckgo.com/iu/?u=...040344.JPG&f=1
    I thought it looked a bit odd Serves me right for lifting images from Google that are wrongly labelled.

  7. #47
    Join Date: Apr 2016

    Location: Bishops Stortford

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    I'm Chris.

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    Quote Originally Posted by walpurgis View Post
    That is correct. The HF1300 phenolic diaphragm is more or less conical and sits closely behind the phase correction grille which is also conical in profile.
    Interesting you called the diaphragm phenolic - what colour does it normally look?

  8. #48
    Join Date: Feb 2008

    Location: Middlesex, UK

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    I'm Alex.

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    I'd be interested to know what that picture of yours is of.

    The front of the HF1300 dome/ cone is usually painted black, some silver painted though.

    I think, but can't fully remember, that the back is a brown phenolic colour.
    Last edited by spendorman; 10-10-2017 at 13:42.
    Spendorman

  9. #49
    Join Date: Apr 2016

    Location: Bishops Stortford

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    I'm Chris.

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    Quote Originally Posted by spendorman View Post
    I'd be interested to know what that picture of yours is of.

    The front of the HF1300 dome/ cone is usually painted black, some silver painted though.

    I think, but can't fully remember, that the back is a brown phenolic colour.
    Here's the link to where the picture came from

    http://www.ebay.co.uk/itm/REPLACEMEN...-/221975710586

    I only asked about the colour of the dome as mine is silver. Did they ever make a metallic dome in addition to the phenolic?

  10. #50
    Join Date: Feb 2008

    Location: Middlesex, UK

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    I'm Alex.

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    Quote Originally Posted by bumpy View Post
    Here's the link to where the picture came from

    http://www.ebay.co.uk/itm/REPLACEMEN...-/221975710586

    I only asked about the colour of the dome as mine is silver. Did they ever make a metallic dome in addition to the phenolic?
    All explained, I think, that ebay listing is for a non standard replacement diaphragm.

    Don't think the HF1300 was ever produced with a metal diaphragm
    Spendorman

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