All about the Roland Jupiter-series

From: royce [mailto:rrooyyccee@...]
Sent: Monday, November 26, 2001 9:23 PM
To: analogue@...
Subject: [AH] jp8 "louder" in dual vs. whole mode?



Hi folks,

Noticed something last night.  When my JP8 with Encore Midi is in dual mode
(or "layer" mode), the sound is louder than when it is in whole mode.  I'd
just keep in dual all the time, but of course you cut the polyphony in half.


I'm not sure, but it seems like the sound becomes fuller and more resonant
as well.  I had difficulty A/B'ing the difference though due to the volume
change.

Is there something wrong with my Jp8?  Is it the midi kit?  Have I missed
some kind of basic law of the physics by which polyphony is inversely
related to phat?  

Royce

 



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From: david [mailto:dj.suurland@...]
Sent: Monday, November 26, 2001 9:45 PM
To: analogue@...
Subject: Re: [AH] jp8 "louder" in dual vs. whole mode?


" basic law of the physics by which polyphony is
inversely related to phat"

cool i gotta remember that
so the fattest (and cheapest) synth is no-phonic !

i have the kenton kit, and have the same deal with my jup8 i guess it layers
two voices on one note
and thus fattens it then again i could be completely wrong

cheers, david

> two voices on one note
> and thus fattens it then again i could be completely wrong
> 
> cheers, david
>

From: Jason Proctor [mailto:jason@...]
Sent: Monday, November 26, 2001 9:45 PM
To: Analogue Heaven
Subject: Re: [AH] jp8 "louder" in dual vs. whole mode?


I assume you've taken account of the fact that dual mode means just 
that - the JP8 becomes two 4-voice synths that play simultaneously. 
Hence you get 4 oscs/note with corresponding increase in phatness, 
etc....

The real way to tell is to compare the JP in single mode with it in 
dual mode with the output from one of the "halves" muted (kill the 
upper or lower signal at the mixer). Does it sound the same then? My 
money says it does :-)


>Hi folks,
>
>Noticed something last night.  When my JP8 with Encore Midi is in 
>dual mode (or "layer" mode), the sound is louder than when it is in 
>whole mode.  I'd just keep in dual all the time, but of course you 
>cut the polyphony in half.


--

From: royce [mailto:rrooyyccee@...]
Sent: Monday, November 26, 2001 9:42 PM
To: analogue@...
Subject: re: [AH] jp8 "louder" in dual vs. whole mode?



 Okay,
5 minutes have passed.  I'm at work. . . in a hospital.  There are no Jp8's
lying around, nor the manuals.
I give up.  What's the answer?
Royce
Guess you guys need to read the manual !!

:)



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From: Tom Moravansky [mailto:tom@...]
Sent: Monday, November 26, 2001 9:48 PM
To: rrooyyccee@...
Cc: analogue@...
Subject: Re: [AH] jp8 "louder" in dual vs. whole mode?


> Hi folks,
> 
> Noticed something last night.  When my JP8 with Encore Midi is in dual
mode (or 
> "layer" mode), the sound is louder than when it is in whole mode.  I'd
just keep 
> in dual all the time, but of course you cut the polyphony in half. 
> 
> I'm not sure, but it seems like the sound becomes fuller and more resonant
as 
> well.  I had difficulty A/B'ing the difference though due to the volume
change.
> 

If a Jupiter-8 has been calibrated less than 1/2 hour ago, and you sync the
two oscillators, and use triangle waveforms, the effect is virtually
unnoticeable.  Under normal conditions, the free-running analog oscillators
are not **exactly** in phase or tune and if you have some PWM going you're
going to get a bigger sound since a bit more of the audio spectrum is
being generated.  Seriously, switching to: filter wide open w. 0 resonance,
1 oscillator per voice, and a purer waveform like sine or triangle will
minimize the layering effect.

-- 

_______________________________________________________________________
Tom Moravansky                                    tom@...

From: Lars Johansson [mailto:lasse@livesound.se]
Sent: Monday, November 26, 2001 10:06 PM
To: Analogue Heaven
Subject: SV: [AH] jp8 "louder" in dual vs. whole mode?


----- Original Message ----- 
From: royce <rrooyyccee@...>
To: <analogue@...>
Sent: Monday, November 26, 2001 9:42 PM
Subject: re: [AH] jp8 "louder" in dual vs. whole mode?


> 
>  Okay,
> 5 minutes have passed.  I'm at work. . . in a hospital.  There are no
Jp8's lying around, nor the manuals.
> I give up.  What's the answer?
> Royce

The answer is......

when you put the JP-8 into dual mode you´re getting two 4 voice synths
instead of one 8 voice.

If you have the same sound assigned to both the upper and lower layers
you´ll hear two identical voices for each key you play. This will cause it
to sound twice as loud and fat.

This assumes that you have the balance knob at center position and your JP
is fully functioning.

LJ

http://hem.spray.se/ppgwave/studiopics.html