Van Ruyden, Early 30's Any information welcome
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Location: Clare, SA
Member since 27 March 2016
Member #: 1894
Postcount: 510
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I bought this lovely console from PA Man and after a recap, it has a new lease of life, A great rich sounding and loud radio. I have a problem with the volume pot being NVG. At zero the set is at what I'd estimate as half volume. It is a small pot and does not look original.
The Valve lineup is as follows. 80 (rectifier) 42 (this has been replaced with a 6F6G with the updated valve socket), 6F7, and 6A7
If anybody has ny knowledge of this lineup and possibly a schematic I would be very grateful. A member here has offered me a replacement NOS pot at a very reasonable price, however I need to know the Ohms?
Thank you very much if you are able to help!
Cheers.
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Location: Hobart, TAS
Member since 31 July 2016
Member #: 1959
Postcount: 563
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There were a number of radios that were designed in such a way so that the volume could not be turned right down.
Perhaps this is one of them.
Need to look at circuit.
It may have been a very early safety feature, so you would not forget to turn them off.
JJ
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Location: Latham, ACT
Member since 21 February 2015
Member #: 1705
Postcount: 2174
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From my limited experience your Van Ruydan would be very similar to my 1934 EMMCO. The ohms for the wire wound pot should be 5k. You will find a schematic for a 1938 Weldon in the 2nd ORSM which is identical to my EMMCO. If you want a copy please email me and I will send it. Or I will send it when I get home from work. If its a 5k Pot that's needed then either myself or Steve can supply you with one.
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Location: Perth, WA
Member since 19 November 2008
Member #: 381
Postcount: 240
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Location: Clare, SA
Member since 27 March 2016
Member #: 1894
Postcount: 510
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Thank you Carl, yes I think it will be 5k, Steve in sending me one, the 38 Weldon looks very similar, except is a 5 valve, whilst mine has
only four, after the 80, 42 nd 2A, are different, but the power supply, resistors and capacitors seem familiar, the van Ruyden has a lot
of resistors that appear to be merely wire wrapped around flat cardboard like insulators, big Chanex paper caps which I replaced.The
circuit is fairly primitive looking, but the radio is a good loud belter, with a good tone! The chassis is one piece folded steel, front top and
rear, with wooden sides. The Weldon has a 6C6 and a 5D6, where my van Ruyden has one 6F7, supposedly doing the job of both of the
afore mentioned. I'll study the valve data of all 3 and see if I can figure how that works... I'm convinced that 5k ohms would be the most
logical choice of pot. Cheers.
Jamie.
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Location: Clare, SA
Member since 27 March 2016
Member #: 1894
Postcount: 510
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Ah, it appears that the 6C6 is a valve very suitable for Automatic Volume control, which the Weldon, being a later 30's set would likely
employ and the 6D6 working with it to do what the 6V7 as a combined Triode- Pentode could manage on it's own with no AVC.
I'm fairly sure my Van Ruyten (I believe you are correct Garyoz) is from 1933-1934, as it originally had a 42, which is the four pin version
of a 6V6G, which superseded the 42 around 1937=8 apparently. Mine has had the socket replaced to accommodate the octal version.
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Location: Sydney, NSW
Member since 28 January 2011
Member #: 823
Postcount: 6761
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Location: Latham, ACT
Member since 21 February 2015
Member #: 1705
Postcount: 2174
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Jamie if you need any of the old 4 pin valve sockets I have heaps of them here .
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Administrator
Location: Naremburn, NSW
Member since 15 November 2005
Member #: 1
Postcount: 7395
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Photos uploaded.
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A valve a day keeps the transistor away...
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