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information on an old design of the Rogers monitor

 
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bouwer
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Joined: 27 Mar 2008
Posts: 2

PostPosted: Fri Apr 04, 2008 10:03 am    Post subject: information on an old design of the Rogers monitor Reply with quote

In the 80`s I builded a pair of Transmission Line speakers, builded according to a description from a Electronics or Hi-Fi magazine. The article was called “Build this Monitor speaker” and the author was C.J Rogers. The crossover was a "Cambridge R50" made for this speaker. Used were the chassis ,KEF B139, B110 and T27 and a Coles supertweeter. I think in1973 this article was published and a copy of it is still in my possession.
A few years later, before I started the construction, there was a description of someone else to improve the performance of this particular design even better by adding a second KEF B 110 in his own compartment above the compartment of the original B 110 and an improved crossover filter.
This particular design I constructed and until this day, these speakers are very satisfying for me. Some time ago I wanted to measure something in the crossover network but I can't find the mentioned article of this modification. Can someone help me with a copy of this article ?
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ColinR
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Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Fri Apr 04, 2008 10:20 am    Post subject: Reply with quote

Put me down for a copy of the schematic Very Happy .
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bouwer
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PostPosted: Sat Apr 05, 2008 12:48 pm    Post subject: Reply with quote

Do you want the original or the expected one ?
greetings
jan
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ColinR
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Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Sat Apr 05, 2008 3:16 pm    Post subject: Reply with quote

Being the sad soul who put the original Bert Webb R50 design's schematic here

http://groups.google.com/group/vintage-cambridge-audio

and I do know which KEF employee designed it Cool .

I'm interested in the Klang+Ton, Speakerbuilder or whatever varient you're after, plus any other "oddish" KEF designs or novel crossover topographies from ~1975 onwards Smile .
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