[sdiy] RFZ gear - negative voltage power supply?

[jure zitnik]

no, it's definitely -24V... it's obviously a common german thing from
the old school broadcast consoles.
i've read some about it, also, here's a pinout for one of them:
http://german-modules.de-blog.jp/photos/uncategorized/2009/09/06/w735_1_pinout.jpg

there's been some discussing of the subject on the prodigy-pro forums,
but i haven't been able to find a definite answer.


On Wed, Nov 3, 2010 at 8:38 PM, dancemachine <dancemachine at gmail.com> wrote:
> really needs "-24V"? or maybe there is just a confusing dash in front of "24V"
>
> I am just speculating though
>
> On Wed, Nov 3, 2010 at 2:45 PM, jure zitnik <kokoon at gmail.com> wrote:
>> Greetings, list!
>>
>> I'm sitting here in front of three ancient RFZ console modules, trying
>> to wrap my head around this.
>> I want to put them in a single enclosure and power them all from a single PSU.
>>
>> the modules are:
>> 1x W735/1 (a two channel 7-band EQ)
>> 2x V740/1c (a mono preamp)
>>
>> I have some vague info on the pinout and it says they take just a
>> single -24V line for power...
>>
>> Now how exactly does that work? Can I just take a normal AC-DC 24V
>> supply, hook the +24V to the module's ground and the supply's ground
>> to module's -24V input?
>> Does anybody know these specific modules? I read somewhere they don't
>> even need regulated voltage... any ideas?
>>
>> Thanks a bunch,
>> jure
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>