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SaSi
Senior Contributor 200+
Joined: 24 Aug 2008
Posts: 256
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 Posted: Fri Sep 12, 2008 12:03 pm Post subject: B110 type 6542 |
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Has anyone heard of the 6542 version of the B110? They are marked as 24Ohm and supposed to be wired 3 in parallel.
Any idea of what they were used on or why they existed? |
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ColinR
Über Contributor 1000+
Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire
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| Posted: Fri Sep 12, 2008 1:33 pm Post subject: |
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Yes  , three were used together in the big Heathkit/Arena design with two 16 Ohm 6527 B139As and four A6535 T27s.
Unless you're into SET amplifiers with Triode electronic crossovers I'd run away at very high speed  .
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Last edited by ColinR on Sun Sep 14, 2008 7:52 pm; edited 1 time in total |
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speakerguru
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Joined: 18 Nov 2005
Posts: 1192
Location: Green Hut, Tovil
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| Posted: Sun Sep 14, 2008 10:10 am Post subject: |
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| No. Never even heard rumours of them from the old timers at KEF in the 70s. |
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KEF_Support
Introductory Contributor
Joined: 04 Aug 2008
Posts: 3
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| Posted: Wed Sep 17, 2008 12:33 pm Post subject: B110 type A6542 |
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ColinR is quite correct.
The A6542 was the 24 ohm version used in the Arena HT25, which was a system assembled by Hede Nielsens Fabriker in Denmark. A6542 went into production in 1968.
Regards to all. |
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SaSi
Senior Contributor 200+
Joined: 24 Aug 2008
Posts: 256
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| Posted: Sat Oct 18, 2008 3:26 pm Post subject: |
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Well, perhaps I should have listened to Colin and stayed away, but for 95 euro plus shipping I could not resist from saving 6 of these from that auction site.
They appear to be in very good shape, judging from the pictures, and I am waiting for their arrival.
Somehow I feel it's worth experimenting with these in form of a Bessel array with a T27 in the middle to form a central channel for a 5.1 system. |
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SaSi
Senior Contributor 200+
Joined: 24 Aug 2008
Posts: 256
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| Posted: Sat Oct 03, 2009 10:43 pm Post subject: |
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Please don't laugh at me.
Can anyone suggest an interesting project with 12x B110 A6542? Assume that I have the power to drive them. |
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ColinR
Über Contributor 1000+
Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire
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| Posted: Sun Oct 04, 2009 10:47 am Post subject: |
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Stereo
At the top 4" square of mdf/whatever to take a T27 (open baffle like), below 15 litre trapizoidal enclosure with front to slope angles of 30 degrees (like AR LST/MST) to take three 24 Ohm B110s wired in parallel on each face, bass unit and box to taste.
Centre
A 4"*8" rectangle of mdf/whatever for the T27s (on a pivot?), mount the left trapizoid described above the right (on a pivot?), a wider stereo version of six 5 litre enclosures would be complex to build and wouldn't offer greater performance i.m.h.o.
Well it is Sunday morning and I'm still half asleep  .
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This post or any other information supplied to this website or any other by myself is not available for any form of commercial purpose i.e. to hi-fi magazines or as sales and marketing material for sleezeBay or Audiodogging pimps and the like. |
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