modern mellotron???? 2

[The Dark force of dance]

Y-ellow.
        Looks like another job for a 5 by 5 to me.
       
At 08:06 AM 10/9/97 +0200, Martin Czech wrote:
>> use it ;->) or so, absolutely low fi.  Also the "echolette" uses a >
>magnetic disk for echo effects.
>
>At home I found a "electronics for musicians" book, where the
>preparation of such an magnetic disk is described.  A thick (5 mm) alu
>disk was required, and a magnetic tape was glued to  the circumference.
>Then a primitive tape recorder head electronic was described.
>
>Now, it is pretty hard to diy a alu disk with suitable precision.
>Maybe you can use a very old, very thick hard disk for this purpose.

The platters are 14 inches in diameter. 3mm thick aluminium pre-coated both
sides with a magnetic recording surface. You get the motor to spin 'em up
and you could replace the head with a tape-recorder head. Remember that
unlike an audio tape machine, there is only a single head on a disk drive. A
tape recorder pre-erases the tape before recording a new signal. However,
using a disk drive, you will simply be moving the particles. What also seems
to be neglected here is that you will also need to pre-bias the substrate.
This is normally done in the erase process on a tape recorder. However, with
only a single head, this could not be done.

Hope this helps.

Be absolutely Icebox.
 _ __        _                              
| "_ \      | |         batzman at dove.mtx.net.au / aek at gist.net.au
| |_)/  __ _| |_ ____           ALL ELECTRIC KITCHEN               
|  _ \ / _` | __|___ |  The new AEK CD, Elementary Urban sanity    
| |_) | (_| | |_  / /   is out now on Transmission Communications from
|_,__/ \__,_|\__|/ /    http://brisbane.dialix.com.au:80/~com11
                / ,__   and check out http://www2.gist.net.au/~aek/
Goodfortune    |_____|       Get your SANITY and wear it out.