[sdiy] Moog 907 inductors

[thx1138]

On 12/30/11 4:03 AM, "Oren Leavitt" <obl64 at ix.netcom.com> wrote:

> 
> 
> On 12/30/2011 4:19 AM, Ingo Debus wrote:
>> 
>> Am 29.12.2011 um 22:16 schrieb Oren Leavitt:
>> 
>>> IIRC, a while back, someone was asking about, or looking for an example of,
>>> the type of inductors used in the Moog fixed filter banks.
>>> 
>>> Well.....here's an example:
>>> 
>>> http://www.ebay.com/itm/130621318887
>> 
>> Thanks for the heads up!
>> 
>> On Flickr there are some pictures of 907 and 914 modules too:
>> <http://www.flickr.com/photos/matrixsynth/317870776/>
>> <http://www.flickr.com/photos/matrixsynth/317870739/>
>> <http://www.flickr.com/photos/matrixsynth/317870707/>
>> <http://www.flickr.com/photos/matrixsynth/317870671/>
>> <http://www.flickr.com/photos/matrixsynth/317870638/>
>> <http://www.flickr.com/photos/9828434@N03/5047562024/>
>> 
>> I wonder, if these inductors are stacked this way, is there some magnetic
>> coupling between them? In the 914 there are obviously even more than two
>> inductors (i. e. from different filters) on one stack.
>> 
>> FWIW I have recorded the impulse responses and the responses to white noise
>> of my 907 clone. Anyone interested? I could put them up on Soundcloud.
>> 
>> Ingo
> 
> I think they're stacked that way just to save PCB space. There's two
> inductors and two capacitors per band. On a 914 with 12 bands plus
> low/high pass, that would be 28 coils!
> 
> - Oren
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Hi Folks,

Please refer to the web link below for more information on Harald Bode and
his son Peer Bode.

http://cec.sonus.ca/econtact/13_4/editorial.html

Best regards,

Terry