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 Mullard MAS15-34
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 Return to top of page · Post #: 1 · Written at 10:13:53 PM on 6 August 2018.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Wow I got this massive beautiful set from a mate last night. The case has no blemishes at all. The interesting thing is that it is made in England and has a ARTS&P sticker on it.
Made in 1938 and it must have been a high end set for those times.

I think it has a hot chassis though as it has a twin core cable that detaches as you pull the back off of it.
I have come to the conclusion that it is a New Zealand Set.

Mullard MAS16 Table Radio
Mullard MAS16 Table Radio
Mullard MAS16 Table Radio
Mullard MAS16 Table Radio
Mullard MAS16 Table Radio
Mullard MAS16 Table Radio


 
 Return to top of page · Post #: 2 · Written at 1:28:38 PM on 7 August 2018.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6347

I can't see anywhere as to the country of manufacture, however many Australian radios that were put on ships for export were labelled as "British Made" rather than "Australian Made", probably out of loyalty to the mother country. AWA did this with their Radiolettes of the 1930s.

The tuning dial shows both Australian and New Zealand stations. This tells me it was made here then sent across the ditch. Mullard radios intended for the Australian market at the time were made by Airzone rather than Philips, though that one has lots of Philips in it. The P-base valves and the cloth protector over the loudspeaker give that clue away.

The ARTS&P label gives away the intended market too. It mentions the Dominion of New Zealand rather than the Commonwealth of Australia.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 3 · Written at 2:06:20 PM on 7 August 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6010

Note from Radiomuseum: "The AC/DC version of this set [MAS15] is MUS15. This set is a Mullard version of Philips 650A. The Philips schematic can be used."

And for MUS15: "This set is the same as the MAS15 (AC mains) except it has an additional circuit, a DC to AC vibratory converter."


 
 Return to top of page · Post #: 4 · Written at 2:36:01 PM on 7 August 2018.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Do you have that schematic at hand GTC?
On the back cover which is not pictured it says Made in England. I did think it may have been made in Australia but the innards seem to be very Euro.


 
 Return to top of page · Post #: 5 · Written at 3:03:20 PM on 7 August 2018.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Double post.


 
 Return to top of page · Post #: 6 · Written at 3:14:22 PM on 7 August 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6010

No, I don't have anything that early for either Mullard or Philips.

The 650A schematic is available here: https://www.radiomuseum.org/r/philips_650a_3.html

Radiomuseum has that model as being made in England, by Mullard Wireless, London.

QUOTE: Mullard Wireless Service Co.Ltd., Mullard House, Charing Cross Rd., London WC2

Mullard was founded in 1920 by Captain Stanley R. Mullard. Mullard formed a partnership with the Dutch manufacturer Philips. Mullard sold all its shares to Philips in 1927. Philips continued to use the brand name "Mullard" in the UK until 1988. The company produced components including valves & transistors, as well as products such as radios & television sets. Many Philips sets were produced in the UK using the Mullard name.


 
 Return to top of page · Post #: 7 · Written at 5:11:24 PM on 7 August 2018.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

My set has only 5 Valves including the Tuning Valve. The 650A Has 6. Thats the only difference I can see.
Apon reading about both models on Radiomuseum yes GTC You are correct in saying that the philips schematic can be used. The only difference as I said is the tuning Valve.

Now is it a hot chassis?


 
 Return to top of page · Post #: 8 · Written at 5:41:02 PM on 7 August 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6010

You are correct in saying that the philips schematic can be used

Those are not my words. I put that statement between quotation marks because I am quoting it from Radiomuseum.

is it a hot chassis?

A 'hot chassis' normally means that there is no power transformer, so one side of the mains goes direct to chassis (usually via the on/off switch) and the other is fed to a series-connected chain of heaters, usually via a dropping resistor. In that case, the valves will have type numbers beginning with 50, 35, etc, not all 6.

Another quote from Radiomuseum: "This [MUS15] set is the same as the MAS15 (AC mains) except it has an additional circuit, a DC to AC vibratory converter."

So, if you have the MUS15 version, then it should have that multivibrator circuit in it.


 
 Return to top of page · Post #: 9 · Written at 7:48:52 PM on 7 August 2018.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Mine is the MAS15 (AC mains).


 
 Return to top of page · Post #: 10 · Written at 8:10:07 PM on 7 August 2018.
Johnny's avatar
 Location: Hobart, TAS
 Member since 31 July 2016
 Member #: 1959
 Postcount: 409

With radio’s on/off switch on just measure from either mains pin to deck.
Any resistance at all and it is either a hot chassis set, or the mains tranny is R/S.
JJ


 
 Return to top of page · Post #: 11 · Written at 9:46:04 PM on 7 August 2018.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Aha thank you Johny


 
 Return to top of page · Post #: 12 · Written at 6:27:48 AM on 8 August 2018.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1130

This model is actually a Mullard MAS15-34. It is a export model specifically for the NZ market & differs from the UK/European versions by an absence of the Long Wave band. I doubt you'll find the exact schematic on Radiomuseum. At best what you do find will be good for a guide only. I would look at contacting the NZVRS.

The ARTS&P (NZ) decal has the number 5 indicating five valves - but I do not know whether this number includes magic-eyes or rectifiers. Is there another valve hiding somewhere?


 
 Return to top of page · Post #: 13 · Written at 7:12:31 AM on 8 August 2018.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6347

I see five valves including the eye and rectifier. I've always counted these as valves as that is what they are in a technical sense and I just assume they are a part of the official number.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 14 · Written at 1:44:34 PM on 8 August 2018.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Yes definitely only 5 valves.


 
 Return to top of page · Post #: 15 · Written at 4:16:29 PM on 8 August 2018.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1130

That is interesting.

An ad in a 1938 NZ newspaper suggests 6 valves.


 
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