[sdiy] semi ot: loud speaker for synths

[Czech Martin]

Yes, I remember a 1980s chassis with a rotating motor drive.
The rotation was transmitted via ribbons to the cone...


m.c.

> -----Original Message-----
> From: Don Tillman [mailto:don at till.com]
> Sent: Mittwoch, 26. November 2003 21:21
> To: Czech Martin
> Cc: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] semi ot: loud speaker for synths
> 
> 
>    > Date: Wed, 26 Nov 2003 17:48:22 +0100
>    > From: "Czech Martin" <Martin.Czech at micronas.com>
>    > 
>    > The number of inches says nothing about the quality of the
>    > driver.
> 
> That's certainly true.  
> 
> In any kind of driver size discussion there has to be an understanding
> that we're comparing the effects of size only, and that the other
> parameters will stay constant.  Unfortunately that's physically
> impossible; just changing the size will change most of the parameters.
> 
> So to have any  proper sort of  discussion about driver size there
> needs to be a framework of what parameters or combinations of
> parameters need to stay constant.  But that's way, way off topic...
> 
>    > Certainly a 30" membrane will be difficult to control.
> 
> Anybody remember the ElectroVoice 30W 30-inch woofer?  Wheee!  
> 
> And when I was young, a neighbor had a Pioneer 36-inch woofer in his
> basement.  (!!!)  This was a very unusual speaker. It wasn't enough it
> was ridiculously large, but the cone was driven by three separate
> voice-coil-and-magnet assemblies and a metal pyramid-like structure
> connecting them together to the apex of the speaker cone.  This
> speaker wasn't in an enclosure or anything, the neighbor wasn't
> really sure what to do with it.
> 
>   -- Don
> 
> -- 
> Don Tillman
> Palo Alto, California
> don at till.com
> http://www.till.com
> 
>