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This forum has been set up to facilitate discussion of 1970s KEF speakers and drive units. The owner of the Forum has no connection with KEF Audio.
 
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  Topic: Imperial Thread of KEF Bolts
neddy

Replies: 5
Views: 2894

PostForum: KEF speakers   Posted: Thu Apr 25, 2013 6:38 pm   Subject: Imperial Thread of KEF Bolts
Thanks speakerguru. Other bolts/nuts for my 105.1 are M4 and M5.

Regarding the bolts and t-nuts for drive unit mounting M4 and M5 do not fit as I have tried them.

The existing bolts will screw ...
  Topic: Imperial Thread of KEF Bolts
neddy

Replies: 5
Views: 2894

PostForum: KEF speakers   Posted: Wed Apr 24, 2013 10:53 pm   Subject: Imperial Thread of KEF Bolts
Thanks speakerguru. So can I assume my KEF 105.1 use 2BA bolt/t-nut for bass baffle and midrange units and 3BA for the treble units?
  Topic: Imperial Thread of KEF Bolts
neddy

Replies: 5
Views: 2894

PostForum: KEF speakers   Posted: Wed Apr 24, 2013 4:00 pm   Subject: Imperial Thread of KEF Bolts
I assume that the bolts and nuts used in KEF speakers of the 1970's were
imperial and used British Standard Fine (BSF) as a screw thread form. Can anyone please confirm this ? Thanks
  Topic: Thinking of Stiffening 105.1 BassEnclosure with Ceramic Tile
neddy

Replies: 19
Views: 11513

PostForum: KEF Speakers from the 1970s   Posted: Thu Apr 18, 2013 3:34 pm   Subject: Thinking of Stiffening 105.1 BassEnclosure with Ceramic Tile
Is this really such a stupid question? If (I know its a big if) cladding the bass bins raised all resonances above the pass band of the bass bins (400Hz 24db octave) then there would be no need for lo ...
  Topic: Thinking of Stiffening 105.1 BassEnclosure with Ceramic Tile
neddy

Replies: 19
Views: 11513

PostForum: KEF Speakers from the 1970s   Posted: Thu Apr 18, 2013 2:02 am   Subject: bass bin 105.1
After much deliberation i have decided to clad my kef 105.1 bass bins with 8 mm porcelain black mirror tiles. I intend to use Bostik timebond as the adhesive.
My question is to you experts is whether ...
  Topic: Thinking of Stiffening 105.1 BassEnclosure with Ceramic Tile
neddy

Replies: 19
Views: 11513

PostForum: KEF Speakers from the 1970s   Posted: Sat May 26, 2012 2:18 am   Subject: Re: Thinking of Stiffening 105.1 BassEnclosure with Ceramic
... hopefully resonances that do exist will be raised beyond the pass band of the bass cabinet.

Just in case you thought it was simple or easy; don't forget that the midrange driver can excite th ...
  Topic: Thinking of Stiffening 105.1 BassEnclosure with Ceramic Tile
neddy

Replies: 19
Views: 11513

PostForum: KEF Speakers from the 1970s   Posted: Fri May 25, 2012 1:57 pm   Subject: Re: Thinking of Stiffening 105.1 BassEnclosure with Ceramic
I am thinking of externally cladding the bass enclosure of my 105.1 with 8mm 500x500mm ceramic black polished tiles, cut to size. My cabinets are a bit tatty so I am not worried about looks too much. ...
  Topic: Thinking of Stiffening 105.1 BassEnclosure with Ceramic Tile
neddy

Replies: 19
Views: 11513

PostForum: KEF Speakers from the 1970s   Posted: Wed Apr 18, 2012 1:20 pm   Subject: Thinking of Stiffening 105.1 BassEnclosure with Ceramic Tile
I am thinking of externally cladding the bass enclosure of my 105.1 with 8mm 500x500mm ceramic black polished tiles, cut to size. My cabinets are a bit tatty so I am not worried about looks too much. ...
 
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