Thanks Rich,
Very helpfull again, so I will not buy this A-183-1.
Cheers,
Danny

--- In Doepfer_a100@yahoogroups.com , Richard Horsman <richyho@...> wrote:
>
> Hi Danny
>
> Yes, you could use an A-138 in place of an A-183-1 to attenuate a
> single signal. It also gives you the added bonus of being able to
> offset that signal by up to 5V - If you don't plug your signal in to
> channel 1 then that channel's knob will add up to 5V to your signal at
> the output.
>
> If it's audio you're attenuating then the 138b is moreusefual than the
> 138a as it has an exponential response, rather then then a's linear
> one.
>
> This from Doepfer's site...
>
> "From April 2004 an improved version of the module A-138b is
> manufactured. For the revised versions control In1 works as a DC
> offset generator (about 0...+5V) provided that no patch cord is
> plugged into socket In1. If this feature is not required it can be
> deactivated by removing a jumper on the pc board. Probably from summer
> 2004 even the A-138a will be manufactured with this improvement."
>
> The 183-1's nice though as it gives you 2 passive independent
> attenuators in just 4hp. Note that these are also VERY easy to build
> yourself - probably the most common first DIY project for Eurorack.
> Just 2 jacks and a pot for each attenuator. Cheap and cheerful!
>
> Hope this helps
>
> Rich
>
>
>
>
>
> Hi,
> Can someone tell me what's the difference between a A-138 Mixer and a
> 183-1 Attenuator, or is it only the difference between active and
> passive, so I could use a A-138 instead of a A-183-1.
> TIA,
> Danny
>