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1995-02-27
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107 lines
AMIGA STEREO SAMPLER
--------------------
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!! !!
!! IMPORTANT: Building and using this device is at your own risc !! !!
!! I can't and will not take any responsebility on any !!
!! damage caused by this device !! (usual message :) ) !!
!! !!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
HISTORY
-------
I wanted to build me a cheap sampler for the Amiga and tried
serveral samplers. In these experimental days I received a small
circuit design for a stereo-sampler. After building this sampler,
I was stunned, what a great quality for only $18 !!
It can sample at all rates possible using Audiomaster IV.
Since the other samplers didn't match my wishes, I decided
to draw the circuit and give it to you, the other Amiga Freaks
in the world,...
This Sampler is an update to my previous sampler, I added
2 amps for volume control on the input (Thanks to: Mike Kopack,
he used this amp in his sampler aswell).
FILES INCLUDED
--------------
You'll find the following files:
* Sampler_COMPONENTSIDE.IFF ; a black&white IFF of the component-
side of the device pcb
* Sampler_SOLDERSIDE.IFF ; a black&white IFF of the solderside
* Sampler.DOC ; you're reading it
* SamplerDemo.IFF ; a sample sampled with this sampler
(+- 20Khz,... Audiomaster IV)
* NEWIO-Files: - Bibliothek-dir
- Platine-dir
- patched 'newio.vorein' for Harddisk usage
(read the note !)
PARTS
-----
You'll need the following parts:
1x ZN449E (cheap AD-Converter)
1x HCF4066BE (makes the stereo possible)
2x LM386N (amps)
6x 10uF El. Capacitor
1x 33pF Capacitor
2x 0.1uF El. Capacitor
1x 1n4148 Diode
2x (red-red-red) 2K2 Resistor
1x (brown-black-red) 1K Resistor
1x (brown-green-orange) 15K Resistor
2x Var.resistor (Pot.meter) 100K
1x DB-25 Male (for your printer port, so watch it A1000 users!!)
2x RCA-in (Audio in)
HOW IT WORKS
------------
First of all,... I made a PCB for my sampler, but it will work just as
fine if you do it with wiring. The layout of my PCB matches the
IFF-pictures (note the difference between componentside en solderside!).
I added Mike Kopachs little amplifier to make incoming sound adjustable.
For best results: - use a METALcase grounded to audio GND
- use 2 seperate variable resistors
- keep all audio cables as short as possible
I also included the data-files for NEWIO 3.0 which I used to draw the
PCB,.. (don't forget the libraries)
A1200 users; Newio 3.0 can be started on your Amiga using the original
chipset (select at boot).
For harddisk useage patch the 'Newio.Vorein'.
You'll have to change every appearance of 'DF0:' in 'Newio.Vorein'
to 'PCB:'.
After that you assign PCB: to you work directory,
example:
assign PCB: DH1:CAD/Newio
Newio now works just fine on your harddisk.
Plans: a little LED-display (VU) would be nice,... (Suggestions ??)
Well that's all,.. eh... I think this is easy to build,.. please
report suggestions and bugs to:
Hans Luyten
't Hofflandt 36
4851TC Ulvenhout
The Netherlands
or to: LUYTEN@KUB.NL
Have fun,...