[sdiy] Unidentified component

[Ben Barwise]

Sorry to be taking this of on a tangent, whats the law on publishing
old books from the 50-60's ?

I imagine its a complex legal issue with no clear answer, I certainly
couldn't find a clear google result , but is it true that 50 years is
about right?

I have a couple of old useless organ DIY books including designing a
tube organ (sounds better than it is) that I would scan+host  - just
for interest.

-Ben

On 5 October 2011 00:33, ghetto synth <ghettosynth at gmail.com> wrote:
> It's an interesting, if not almost useless, book. I also just picked
> up a copy because I've had my library's copy checked out for the last
> two years and I really should take it back and stop renewing it.
>
> There's a lot of discussion of how different organ manufacturers deal
> with various sound issues and effects including some nice discussion
> of percussion circuits. The book includes a lot of partial schematics
> but not really any "projects."  It's very reminiscent of tab CB
> radio/TV books from the 70s but slightly higher quality.
>
> I would say that its true value is something like $5 unless you like
> to fix or dismantle old organs.
>
> About 400 pages in 19 chapters.
>
> 1) Some Elements of Music
> 2) What an Organ is
> 3) Tone Generators
> 4) Keying and Coloring
> 5) Tone Coloring
> 6) Special Effects and Equipment
> 7) Sound Production and Reverberation
> 8) Tuning and Servicing
> 9) Baldwin Organs
> 10) Schober Organs
> 11) Thomas Organs
> 12) Lowrey Organs
> 13) Gulbransen ORgans
> 14) Wurlitzer Organs
> 15) Seeburg Organs
> 16) Hammond Organs
> 17) Rodgers Organs
> 18) Allen Organs
> 19) Conn Organs
> Appendix: A.G.O. Specification
> Index
>
> A lot of the circuitry detail is in the manufacturer's chapters, for
> example, from the Gulbransen Organs chapter:
>
> "One of the weird and interesting features of the Gulbransen box of
> tricks is the Electro-Mute, which is now on all Rialto models. It is a
> Solo stop with a tuba sound, and when a knee lever which hangs down
> from the board supporting the lower manual ismoved back and forth by
> the organist's knee, it makes a wah-wah sound like a jazz trumpet when
> the trumpeter moves the brass derby back and forth over the bell. Fig.
> 13-13 is the Electro-Mute circuit...."
>
> The simple two transistor circuit is presented and the text goes on to
> describe the circuit in detail.
>
> The book is great bathroom reading for synth geeks but probably not
> particularly useful for building synthesizers.
>
> Hope this helps, YMMV.
>
> On Tue, Oct 4, 2011 at 2:17 PM, Matthew Smith <matt at smiffytech.com> wrote:
>> Quoth Tim Stinchcombe at 05/10/11 04:30...
>>>
>>> In an old book I have:
>>>
>>> Electronic Musical Instruments, Richard Dorf, 1968 Radiofile
>>
>> Anyone interested in laying their hands on a copy, there's a few listed on
>> Abebooks:
>>
>> http://www.abebooks.com/servlet/SearchResults?an=dorf&sts=t&tn=electronic+musical+instruments&x=0&y=0
>>
>> Sorry, I just picked up the cheapest one that was there!
>>
>> Cheers
>>
>> M
>>
>> --
>> Matthew Smith
>>
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