Hmm, funny this should come up. I just happened to drive by the location 
of the old plant here on Dayton St. and North Ave. in Chicago this morning.

A _huge_ operation back in the day, spanning almost 3 city blocks. A 
shopping mall now, of course...

The company was still around when I moved to Chicago in the 
mid-seventies, but after going through a series of acquisitions, was 
finally demolished. Wish I had taken photos...

Scott D. Smith
*Chicago Audio Works, Inc.*

George Brock-Nannestad wrote:
>  From: Patent Tactics, George Brock-Nannestad
>
> Hello, 
>
> Dan Nelson wrote:
>
>   
>> The Seeburg discs were 16rpm 9" dia discs with 2" center holes and .5 mil
>> groove.
>> Each library of different music styles consisted of 1000 selections on 28
>> discs. Each quarter 7 of the discs were up dated. Over a years time all 28
>> discs were replaced with another 1000 selection library.
>> I have done an extensive study into Seeburg music and its a story into itself.
>>     
>
> ----- this is great and also great that my error in not taking care when 
> measuring the outer diameter has now been corrected. And you say that they 
> are 16 rpm, that is not 16 2/3? This obviously has a great influence on the 
> playing time. And about a semitone in pitch.
>
> It would be very interesting to read the result of your study. It would 
> probably be very different from a study of jukeboxes, because they were 
> intended for a consumer format. Here we rather have a complete system, 
> including the programming. Were Seeburg earlier than Muzak? The only similar 
> thing I have is "Music While You Work" (on 78s), which I only know from the 
> UK. 
>
> So, something good came out of false information from myself and others.
>
> Kind regards,
>
>
> George
>
>
>   
>> --- On Sun, 10/4/09, David Breneman <[log in to unmask]> wrote:
>>
>>     
>>> From: David Breneman <[log in to unmask]>
>>> Subject: Re: [ARSCLIST] LP Jukeboxes  (Was:Living Presence promo copies)
>>> To: [log in to unmask]
>>> Date: Sunday, October 4, 2009, 7:22 AM
>>> --- On Sun, 10/4/09, George
>>> Brock-Nannestad <[log in to unmask]>
>>> wrote:
>>>
>>>       
>>>> Outer diameter 8 inches, hole 2 inches.
>>>>         
>>> Yes, that's right.  I said 10" but that was of course
>>> by
>>> (faulty) memory.  The sets I have are Christmas sets.
>>> About one in three songs are Christmas music. 
>>> Seeburg
>>> was very adamant about rotating the records.  I'm
>>> sure
>>> they had research that showed that playing the same
>>> songs in the same sequence month after month would slowly
>>> drive the location's employees insane.  :-)
>>>
>>>
>>>
>>>       
>>>
>>>       
>>       
>>     
>
>