[Sursound] ST250 Schematic?

2015-11-24 Thread Rudy Chalupa

Hello everyone! I'm new to this list, but not to Ambisonics - I had the 
firstCalrec MK IV microphone in North America. (Apparently my modifications to 
the MK IV got mentioned here in October.) Anyway, I just purchased a used ST250 
which sounds like it might be a little dodgy. I understand the internals are 
quite different from the MK IV or MK V. I've located a pdf of the user's 
manual, but a schematic would be most welcome. Does anyone have one? Do you 
think TSL would be forthcoming with such a thing?

Cordially,

Rudy Chalupa
Pleiades Audio + Electronics
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Re: [Sursound] Is this a questionable statement?

2015-11-24 Thread John Leonard
Thanks, Geoffrey. I wondered about that back in the early 1980s. Bit of a 
shame, really, as things turned out. And who on earth chose Boots (it was 
Boots, wasn’t it?) for the domestic set-up distribution, I wonder?

Regards,

John

Please note new email address & direct line phone number
email: j...@johnleonard.uk
phone +44 (0)20 3286 5942


> On 24 Nov 2015, at 17:10, Geoffrey Barton  wrote:
> 
> yes.
> 
> Peter Fellgett brought NRDC into the project before filing his patent as, it 
> being a university invention, NRDC at that time (since 1948) had first 
> refusal to the development and commercial exploitation thereof. It is 
> arguable whether he had to do this, but he did.
> 
> Geoffrey

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Re: [Sursound] Is this a questionable statement?

2015-11-24 Thread Geoffrey Barton

> 
> Message: 1
> Date: Mon, 23 Nov 2015 18:09:10 +
> From: John Leonard 
> To: Surround Sound discussion group 
> Subject: [Sursound] Is this a questionable statement?
> Message-ID: <4c86a959-cf67-4aff-b42a-0e3fe54ba...@johnleonard.uk>
> Content-Type: text/plain; charset=utf-8
> 
> I?ve just looked at the Wikipedia entry for Ambisonics, which contains this 
> statement:
> 
> "Ambisonics was developed in the UK in the 1970s under the auspices of the 
> British National Research Development Corporation.?
> 
> Well, I know they screwed up my little project because of their involvement, 
> but is this really a correct statement of fact?
> 

yes.

Peter Fellgett brought NRDC into the project before filing his patent as, it 
being a university invention, NRDC at that time (since 1948) had first refusal 
to the development and commercial exploitation thereof. It is arguable whether 
he had to do this, but he did.

Geoffrey

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