Casio CZ/ VZ/ FZ - Pro Series

Just some "common sense" for everybody...

Anything with a TRS (a 19th century technology) output socket on it has an analog amp inside. The amount of juice you need to drive that amp is going to vary according to what you are playing, how many notes you play in a certain time frame, the velocity of those notes, etc, etc.

And more importantly, the analog amp is going to drain as much power as it wants regardless of anything else going on inside the box.  And if there isn't enough power, its going to suck up however much it can get, leaving less than enough behind for the guts of the synth.

To get the best sound quality out of the beast, you are going to want the volume as high as possible without distortion, and you need to feed it an adequate amount of juice to provide that volume in a CLEAN manner, meaning you are better off giving it exactly what casio originally provided (or slightly more) than you are by under powering it.  You can always turn the volume down and it won't need as much electricity...  but then your signal to noise ratio gets worse...





ezra buchla <ezra.buchla@...> wrote:                                  clues:
 
 my cz101 runs fine off 500mA.
 
 300mA didn't cut it.
 
 -eb
 
 On 8/2/07, Fulfil Objective <kasploosh@...> wrote:
 >
 >   Sweet math equation! I did a similar calculation myself last night
 > and came up with almost the same answer.
 >
 > The thing is, most Casio keyboards will work form varying degrees of
 > current and voltage. For example, I have a Casio MT-68, and the
 > original adapter for it was 7.5V at 600mA. I cobbled together an
 > adapter for it, by splicing a good plug onto a 7.5V at 200mA power supply.
 >
 > 600mA
 > -200mA
 > ------
 > 400mA - That's how much power (current) I'm missing.
 >
 > Using your sweet equation I find out that I'm missing 400mA. And yet
 > it works fabulously. An MT-68 is not very computery though, and can
 > run from lower power. If you lower the power enough it will actually
 > play quieter, rather than not operate at all (I think).
 >
 > The CZ-101 needs more current, but I'm guessing it also has a narrower
 > range of operation. So the question is really: for people who have
 > made their own power supplies, do you have any clue about the range of
 > operation in a CZ-101?
 >
 > Thanks!
 >
 >
 > --- In CZsynth@yahoogroups.com <CZsynth%40yahoogroups.com>, PAJeff
 > <pajeff@...> wrote:
 > >
 > > 850mA
 > > -210mA
 > > ------
 > > 640mA - That's how much power (current) you're
 > > missing. I'm not surprised it doesn't work.
 > >
 > > Radio Shack has power supplies with multiple
 > > plugs.
 > >
 > > PAJeff
 > >
 > >
 > >
 > >
 > __________________________________________________________
 > > Be a better Globetrotter. Get better travel answers from someone who
 > knows. Yahoo! Answers - Check it out.
 > > http://answers.yahoo.com/dir/?link=list&sid=396545469
 > >
 >
 >  
 >
 
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