Alesis Andromeda A6

Hi, wanted to drop by to share this:

It's odd that we never released the signal path
charts to the A6 analog section(s). On this,
nearly its birthday again (counting from when
it shipped), here are the signal schemos..

http://www.pacificnet.net/~peake/assets/A6_ASO_Large.jpg

Oscillator Chip

http://www.pacificnet.net/~peake/assets/A6_ASF_Large.jpg

Filter Chip

Note that there are underscores in the names, and some computers seem
to turn these into hash, so, a link to the overall directory:

http://www.pacificnet.net/~peake/assets/

There are still a few short soundbite mp3s of the first Andromeda beta
unit(s) in there, some played by David Bryce, such as:

http://www.pacificnet.net/~peake/assets/Rocker.wav

http://www.pacificnet.net/~peake/assets/Gothic.wav

These may not be the most recent versions of the signal flow (note
the two switches for selecting hard and soft
sync, versus having a null node and one switch).

The gist is there, however. Note the simultaneously
available analog noise and audio-rate FM paths.

The initial voice included diode-based signal shaping,
etc. but things like that were excluded in the
interest of chip size (and actually finishing
the instrument!)

Here are a couple of items from the testing phase:

http://www.pacificnet.net/~peake/assets/SEM_Amp_Env.jpg

Shows the response that makes the SEM a nice percussion
module. This is the internal envelope, not a Programmer
envelope.

http://www.pacificnet.net/~peake/assets/Sys700_Amp_Env.jpg

A screenshot showing the VCA response of the 700 with
the envelopes at their minimum times, about 1.3ms.