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Thread: 1977 / 2013 in with old out with the new

  1. #1
    Join Date: Jun 2008

    Location: Happy Cheshire

    Posts: 675
    I'm Duncan.

    Default 1977 / 2013 in with old out with the new




  2. #2
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,012
    I'm AudioAl'sArbiterForPISHANTO.

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    What are the speakers, Dunc?

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.


    Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!

    Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!


  3. #3
    Join Date: Jun 2008

    Location: Happy Cheshire

    Posts: 675
    I'm Duncan.

    Default

    Hi Marco

    I was lucky to get these for £346.

    They are a mint pair of Kef 105 mk1, 12in bass drivers that really go low with control and energy. Similar to Ian's Naim Dbl's from what I used to remember.
    Great fun
    But it's not just the bass, the mid and top has so much air and detail. Pinpoint imagery and depth to the sound stage.
    They are probably the best speakers I've owned up till now.

    Duncan
    Last edited by tubehunter; 14-12-2013 at 20:58.

  4. #4
    Join Date: Jun 2009

    Location: Hove Actually

    Posts: 3,935
    I'm Imjustsurviving.

    Default

    Very nice Kef Daleks Duncan, I was told some time ago by a owner that you need to turn the bass units once in a while or they go out of shape due to their weight and start rubbing

    Just found this on the DIY forum

    http://www.diyaudio.com/forums/multi...pgraded-2.html
    Jon


    A person who never made a mistake never tried anything new.




    Set up
    Lafayette el84 power amp , Audio note M1 pre , Tannoy Sterlings, Garrard 301 , SME 3012 , puresound P10, Ortofon SPU, Cambridge CXN streamer
    Micro mega Duo 3 cd transport ,

  5. #5
    Join Date: Apr 2011

    Location: London

    Posts: 4,419
    I'm Robert.

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    Nice Speakers. Only issue was the foam surrounds on the bass drivers / possible re-foam, other than that, very nice !

  6. #6
    Join Date: Jun 2008

    Location: Happy Cheshire

    Posts: 675
    I'm Duncan.

    Default

    Hi Jonboy

    Yes I had heard that one, I plan on giving these a full service and maybe a recap.
    I'll measure some of the old capacitors to see if they have drifted much.
    Thanks for the link.


    Hi RobbieGong

    No foam surrounds used in this model.




  7. #7
    Join Date: Aug 2012

    Location: North East

    Posts: 3,670
    I'm Steve.

    Default

    now that looks like a great system.

  8. #8
    Join Date: Jun 2008

    Location: Happy Cheshire

    Posts: 675
    I'm Duncan.

    Default

    Some pictures of the Kef 105 undergoing a service.


    Kef appear to have used a 105.2 Mark 1 board for the MF/HF sections, and a 105.1 board for the bass section. Entirely consistent with these 105.1's being amongst the last made of that version they
    probably had a few left to make and had run out of 105.1 boards, and not worth ordering more.


    Kef 105.2 mk 1 MF/HF with 105.1 bass section crossover:



    Most of the original caps were out of spec, some by a far bit.
    After talking to Jerry Bloomfield at Falcon Acoustics.
    I decided on Solen Polypropylene Capacitors for the treble section and ALCAP 100V Low Loss
    electrolytic capacitors for the rest, batch selected for 2% tolerance.


    The foam used on top of the bass cabinets had long gone so I've used some Acoustic Foam Room
    Treatment Egg Crate 15" tiles. Looks ok and probably does the same job that the Kef's original did,
    that of absorbing reflections from the bass enclosure's top surface.

    They sound much better and good for another 35 years of enjoyment.

















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