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Thread: KEF 105

  1. #1
    Join Date: Nov 2010

    Location: Chorley, Lancs

    Posts: 1,608
    I'm Mike.

    Default KEF 105

    Hi guys, Iím thinking about getting a pair of 105, but have heard that the bass drivers can be a bit iffy, some advice on what to look for and what model to go for would be appreciated thanks


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

  2. #2
    Join Date: May 2017

    Location: Glasgow

    Posts: 56
    I'm Rohan.

    Default

    Hi Mike,

    I'm guessing what you are referring to it the chance of the bass cones sagging. I've heard of this happening but don't really know what it looks/sounds like if it does happen. I've had 2 pairs of 105s (still have the second pair) and not had this issue as far as I am aware- the low end has never sounded anything other than deep, controlled, and I have never heard anything that sounds amiss.

    What speakers are you running currently?

    As to which model...well, the original 105, and 105.2 are very similar. The head of the 105.2 is plastic rather than mdf or whatever the earlier ones are made of. Both feature the same 1" T52 tweeter, 5" B110 mid and 12" bass driver (which may be slightly different on each as there are fewer mounting points on the .2).

    Specs between these are very similar. I think the .2 and the .4 mentioned below both have the S-stop speaker protection system which prevents damage from amp overload.You don't need it though...they all take a lot of power easily.

    The 105.4 is a smaller model with the same head assembly and 2 8" drivers instead of the single 12"- could be a good call with a smaller room. Having said that, I have heard the 105.1 in a small room, of say 10x12 and it still worked. I have them in my 20x14.5 living room on the long wall and they work so well there too. I actually think they are extremely versatile and work well in near/mid/far field.

    Bass with all is deep, tight and not boomy as we are dealing a with sealed box design. I think this is why they are versatile as regards room size.

    If you look up Kef Museum you can see pictures and specs for all of these.

    The 105.3 is something else altogether and bears no relation to the others. It's a more typical floorstanding shape with the hidden vertically-aligned bass drivers that became a KEF trademark right through to the Reference 1/2/3/4 types in the late 90s. Supposedly a brilliant speaker but I have never had the pleasure of hearing them.
    Last edited by VanDerGraaf; 13-03-2018 at 20:01. Reason: slaying idiotic phone autocorrects!

  3. #3
    Join Date: Nov 2010

    Location: Chorley, Lancs

    Posts: 1,608
    I'm Mike.

    Default

    Cheers Rohan, just the info i needed


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

  4. #4
    Join Date: Jan 2018

    Location: Helsinki

    Posts: 6
    I'm Stefan.

    Default Kef 105 original version

    I have had my Kef 105 (first version that did not use .1 or any thing else) since new. They are very nice as the sound stage is very wide. The base is tight but you can sometimes feel that there is not enough.
    This is not however the case it is just that the base is not bloomy at all. But you might consider a small sub woofer as part of the system. This depends on your taste and music choice. I have never used one.

    I have also heard that you might need to turn the base driver and I have done so. But I have never felt anything that suggest that my drivers sagged over time.
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    Last edited by Spalmgre; 16-03-2018 at 16:14.

  5. #5
    Join Date: May 2017

    Location: Glasgow

    Posts: 56
    I'm Rohan.

    Default

    Thanks Stefan, I had never quite realised where the lower crossover was placed until I saw your picture.

    Regarding the low end, I think they need the wick turned up before they start singing down there. Once you do that though....there is plenty! Very well-balanced with the rest of the frequency range.

    Playing something like Genesis' "Trick Of The Tail", the bass pedal notes can easily pressurise my 6.5 x 4.5m room.

  6. #6
    Join Date: Jan 2018

    Location: Helsinki

    Posts: 6
    I'm Stefan.

    Default

    Kef 105 has different crossover versions. My speakers that are the first version already has not all components in all possible places. So you might argue what is the right crossover layout. But what you see in my pictures is what my speakers come with. The caps are new.

    I attach some crossover versions. The one with red, green and blue text and lines shows the setup in my speakers. I have added the color text and lines. L6 surprises me so maybe you like to comment.

    The active schematic is one that I have found when searching for info about Kef 105 on forums. I did build something similar 40 years ago for my JBL monitors. Now I have used miniDSP and Najda that I find much better for tools for bringing out the best from these classic speakers.
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