General Forum

Re: COMMERCIAL BREAK #3

Daniel — Sun, 26 Sep 2010 13:16:56 GMT

Great!

I need all arguments I can get to justify a BV7-55 for SHMBO!

Re: COMMERCIAL BREAK #3

Spiros — Sun, 26 Sep 2010 12:59:54 GMT

Almost a year after and another surprise Martin!!!!!

Re: COMMERCIAL BREAK #3

Dillen — Sun, 26 Sep 2010 12:49:59 GMT

The Homogen resistors were incredibly expensive components at the time
but they were also the best, you could buy.
I never found one in a Bang & Olufsen radio, though.

They came in a wide range of ohmic values (not following todays standards) and were all of the
same physical size (apprx. 30 x 8 x 4mm). They came with their ohmic values either cast into the
housing or stamped on one side.
A B&O logo was always cast on the other side.
I was told that the initial production series were not of (close) predicted values,
instead the components were measured and stamped accordingly after being produced.
Later, if the story is true, the production control was bettered and the
ohmic values were then cast into the housing itself during production.
I have the above mentioned different versions in my collection and
I also have the 4MOhm shown here, where the "MOhm" is cast in the bakelite
housing (protruding) and the "4" is engraved into the material, making it a
third variant.
Today, their ohmic values have all gone high, 50-100% or more.

Martin

Re: COMMERCIAL BREAK #3

beocool — Sun, 27 Dec 2009 05:45:40 GMT

Thanks Martin for sharing. Great idea, Spiros. I love those old ads.

Re: COMMERCIAL BREAK #3

Spiros — Sat, 26 Dec 2009 14:52:33 GMT

Dear Martin Merry Christmas.

As always you pop up really nice surprises!!!! It would be wonderful to see more of those ads if you have any others!!!!

Many regards

Spiros

Re: COMMERCIAL BREAK #3

vikinger — Sat, 26 Dec 2009 13:47:18 GMT

Hi Martin,

Pity we can't have Commercial Break #4 featuring the new everlasting B&O capacitors!

Graham

COMMERCIAL BREAK #3

Dillen — Sat, 26 Dec 2009 08:19:10 GMT

B&O means quality !

B&O Homogén resistors are, as their name suggests, uniform in their whole cross-section.
Mechanical overload and overburn is therefore out of the question.
Furthermore, the resistors are noisefree and constant and because of
these properties should you only use the danish quality mark B&O.
Price for all values DKK 1 (UK 10p).
Build confidently with Bang & Olufsen A/S, Struer & Copenhagen.

(Source Popular Radio - April 1936)

Martin