[sdiy] Niche ACM-1 how's this thing work?

Tom Bugs admin at bugbrand.co.uk
Tue Mar 21 10:21:52 CET 2023


Enjoyable & interesting read - I like always like Graham Hinton's dry 
approach.

On 20/03/2023 14:36, Vladimir Pantelic via Synth-diy wrote:
> I know nothing about the ACM-1, but it reminds me that I just recently 
> (re-)read these articles about early mixing automation systems:
>
> http://www.muzines.co.uk/articles/midi-automation-systems/3470
>
> http://www.muzines.co.uk/articles/midi-automation-systems/3490
>
> allegedly the reviewed companies did not like the review very much ;)
>
> On 20.03.23 14:55, mark verbos via Synth-diy wrote:
>> Those of us as old as I am might remember this thing from the 90s. It 
>> is patched into the inserts on a mixer and then adds MIDI controlled 
>> automation. All the chatter around is about how it is passive, so it 
>> has “infinite” headroom, 0% distortion, 0% gain. I got one recently 
>> for a low price. I looked inside, eager to know the trick…. Vactrols? 
>> Motorized pots? something I don’t even know about? Inside the is a 
>> big chip 28pins or something with the label scratched off. Does 
>> anyone know what is actually going on in this thing? Is that an 8 
>> channel digitally controlled pot? Just curious.
>>
>> Mark
>>
>>
>>
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