RE: [AH] voltage compatibility between Serge and 15voltsmodulars (Roland

From Bakis Sirros
Sent Mon, Dec 4th 2006, 00:07

Hello Paul,
I do not think that I will ever have any problems with 1volt/oct stuff,
as the modules that mostly output more than 12 volts should be the
clock/gate trigger sources of the blacet/metalbox modules range.
So, I cannot see any problem here with the 1volt/oct tracking...
The cv sources modules will most likely not output more than +/-12volts,
I guess...so there is no need for passing these signals thru the
attenuators.
So, the simple a180 modified multi/attenuator idea of Dieter Doepfer is
great, for me at least.
Many thanks,
Best regards,    :-)
Bakis.


Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
www.parallel-worlds-music.com
www.myspace.com/parallelworldsmusic
www.myspace.com/interconnectedmusic 
www.shimarecords.co.uk
www.rubber.gr  
[doepfer_a100] group owner
Athens - Greece
 

-----Original Message-----
From: Paul Perry [mailto:pfperry@melbpc.org.au] 
Sent: Monday, December 04, 2006 12:12 AM
To: Analogue Heaven
Subject: Re: [AH] voltage compatibility between Serge and
15voltsmodulars (Roland system-100m, Blacet, Metalbox)

It isn't how I'd want to do it, either.
I'd add input protection to all inputs that needed it..
But.....
if somebody has a mix of units, AND doesn't want to modify them,
then one is going to have to put something in front of the vulnerable
inputs.
And one thing I *wouldn't* like to have to use is a simple resistive
divider (if that is what Doepfer is going to provide the original
poster) because, there goes your 1 volt per octave. 
One good thing about this discussion is that people are now somewhat
more informed of the dangers. 

paul perry Melbourne Australia

----- Original Message ----- 
From: "Bill Fox" 
> Limiting the voltage *at the ouput* isn't how I would do it.  If you 
> limit a +/-15V output, then you don't get the full range when sending
it 
> to an input that can handle +/-15V.  You want to limit voltages *at
the 
> input* of a module that can handle only 5/10/12 volts.  Some 
> manufacturers might already provide this over voltage protections but 
> don't count on it unless it is explicitly mentioned in the specs.

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