Decoding early model numbers

[Dillen]

B: I think this was only used for bakelite models that were also available in a wooden cabinet. At present I can only think of Master 41K/41B

U: Universal (suitable for both DC and AC mains)

CH: Chartol

K: I think is for Kabinet (cabinet housed) – usually with built-in speaker. I believe this is a leftover from when many radios were also available as chassis’ only

S: Used mainly for console models. S could be for Stående (Standing) or solitair

RG: Radiogramophone (radio/gramophone combination)

RGS: Standing Radiogramophone

BRG: Bord-Radiogramophone (tabletop-radiogram)

P: I think is for Papir-isolation (paper-insulated leads – due to WW2 material shortages)

Martin

[geoffmartin]

Martin to the rescue! Mange tak!

Mvh
-geoff

[matador]

Martin, what is “Chartol”, please?

Location: Paris France

[geoffmartin]

Hmmm… my assumption about the “B” designation and your comment made me do a little more digging. We might both be wrong.. For example:

Here’s the Master 41-B “Klangbund” in Bakelite:

But this is a Mini 510-B – definitely not Bakelite…

I’ll have to check tomorrow, but I think that one of the “Byggemøbler” components is a  Type Grand Prix 606 B” which is, of course, wood.

I’m starting to think that B stands for many things. Too bad I can’t find a “A”, which would make the task simpler… 😀

 

[AdamS]

Looking at the two pictures, ‘B’ could stand for ‘Brown’!

 

 

[Dillen]

In the Master 41 service manual, where the versions B, K , S and RG are covered,
the B is mentioned as the model housed in bakelite.
Of course there must be another explanation for the 510B etc.

S is mentioned as a “konsolskab” (Skab = cupboard or closet), so a console model.

“Klangbund” is not really a part of the model name.
The Klangbund (“Soundboard”) is a type of passive radiator for low frequencies, working on what B&O described as an “elastic pillow” of air between the speaker cone and the radiator.
In fact it is the back plate of the receiver, and it’s a (relatively) airtight cover, that will “play along” with the bass (read: deepest notes) using a wall behind the receiver as reflector.

Try listening to it if you get a chance, it actually works.

Martin

[artig]

matador wrote:

Martin, what is “Chartol”, please?

I’m not Martin, but Chartol (usually spelled Chatol) could be translated as a writing desk, escritoire or secretaire. Usually with lockable compartments and a fold-down or pull-out  writing surface. Often used as a home office before working from home or computers were a ‘thing’.

[Dillen]

Chatol of course.

Martin

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