Yamaha CS80

Eight-voice polyphony altogether? Or 8 per each kb manual (plus the
mono top)?
I am trying to decide which would be the most expensive (on a price-
per-voice basis) synth in history, analog or digital.
I do recall some top-of-the-line Synclavier systems going for $250K,
but don't remember their polyphony (40 voices??). Michael Jackson had
2 on one of his tours.

Howdy,

I don't have the service manual in front of me but think that the
Yamaha GX-1 have the following voices:

Lower keyboard: 2 x 8 voices
Upper keyboard: 2 x 8 voices
Solo keyboard: 1 voice
Pedal keyboard: 2 voices

--- In yamahacs80@yahoogroups.com, "cuari7" <diaz.jesus@...> wrote:
>
> Eight-voice polyphony altogether? Or 8 per each kb manual (plus the
> mono top)?
> I am trying to decide which would be the most expensive (on a price-
> per-voice basis) synth in history, analog or digital.
> I do recall some top-of-the-line Synclavier systems going for $250K,
> but don't remember their polyphony (40 voices??). Michael Jackson had
> 2 on one of his tours.
>

--- In yamahacs80@yahoogroups.com, "neriks2003" <niklas@...> wrote:

>
> Howdy,
>
> I don't have the service manual in front of me but think that the
> Yamaha GX-1 have the following voices:
>
> Lower keyboard: 2 x 8 voices
> Upper keyboard: 2 x 8 voices
> Solo keyboard: 1 voice
> Pedal keyboard: 2 voices

I think you're right.
I just read Gordon Reid's article on SOS (lucky bastard....he found
one in Australia, speakers, programmer and all).

Goddamn, what I wouldn't give to have the chance to play one.

Oh, well. I'll have to settle for stacking my CS60 above my CS80,
and pretend I have a massive Moog modular behind me while I
blast "Fanfare to the Common Man" from my Alesis monitors...
No knifes, though.... Last time I tried this, I had to get stitches
and a tetanus booster.

;-P

Hi,

I'm currently responsible for the service and maintenance work of Benny
Anderssons (ABBA) GX-1 so I have had a lot of changes to actually play
one ... It's a great synthesizer both physically and soundwise! ;-)

--- In yamahacs80@yahoogroups.com, "cuari7" <diaz.jesus@...> wrote:
>
> Goddamn, what I wouldn't give to have the chance to play one.
>

neriks2003 wrote:

> Hi,
>
> I'm currently responsible for the service and maintenance work of Benny
> Anderssons (ABBA) GX-1 so I have had a lot of changes to actually play
> one ... It's a great synthesizer both physically and soundwise! ;-)
>

That sounds like a sweet gig! Are you also familiar with the CS80? I'd
like to know your opinions of one vs. the other. I've actually been
looking into this in the last few weeks and came up with the following:

Keyboard touch:
CS80 - 5-octave, semi-weighted with velocity (initial touch) and
polyphonic aftertouch
GX-1 - solo keyboard - 3-octave mini keys with velocity, aftertouch, and
side-to-side touch
upper/lower - 5-octave. Not sure of sensitivity/action
pedal - 2-octave
It looks like the GX-1 uses the knee lever where the CS80
uses aftertouch. True?
It looks like the GX-1 doesn't have poly-aftertouch, so you
can't add modulation to
just some notes. True?

Presets
CS80 - 14 presets * two. Eleven fixed (short of getting out a soldering
iron). Three changeable any time via front-panel knobs (two via
mini-knobs under flip-up panel).
GX-1 - 10 presets * two per keyboard. All changeable via trim-pots on
little, removable cards. Can't change settings while playing. Needs
special programmer box.

Ribbon
CS80 - relative pitch bend of notes being played. Can bend up one octave
max and down infinity!
GX-1 - never sure how this worked. Got the impression that it actually
triggered notes of the solo voice. Please clear this up!

Weight (had to put this in...)
CS80 - about 200lbs/100kg
GX-1 -600lbs / 250kg (does this include speakers, pedals, and bench?)

Number made
CS80 - about 1000
GX-1 - about 50.

I'd welcome anyone who knows this stuff to fill in any info or ask any
questions I haven't though of.

David

Hi,

>
> That sounds like a sweet gig! Are you also familiar with
> the CS80? I'd like to know your opinions of one vs. the
> other.
>

Yes, I own a CS-80 (#1025) ...

>
> Keyboard touch:
> CS80 - 5-octave, semi-weighted with velocity (initial touch)
> and polyphonic aftertouch
> GX-1 - solo keyboard - 3-octave mini keys with velocity,
> aftertouch, and side-to-side touch
> upper/lower - 5-octave. Not sure of sensitivity/action
> pedal - 2-octave
> It looks like the GX-1 uses the knee lever where the CS80
> uses aftertouch. True?
>

Yes, it's true ...

>
> It looks like the GX-1 doesn't have poly-aftertouch, so
> you can't add modulation to just some notes. True?
>

Yes, it's true. I think that the polyphonic aftertouch is one of the
few drawbacks of the GX-1 compared to the CS-80.

>
> Presets
> CS80 - 14 presets * two. Eleven fixed (short of getting
> out a soldering iron). Three changeable any time via
> front-panel knobs (two via mini-knobs under flip-up panel).
> GX-1 - 10 presets * two per keyboard. All changeable via
> trim-pots on little, removable cards. Can't change
> settings while playing. Needs special programmer box.
>

The GX-1 has 10 x 2 presets for Lower keyboard, Upper keyboard and
the pedal keyboard. The solo keyboard have 10 presets.

Some of the settings can be tweaked in the same manner as the CS-
80 ... like the effect/performance controls (brilliance and
resonance). Apart from these you'll need one or more tone-boards to
change the actual sound. Here is a picture of a tone-board ...

http://www.neriks.com/Temp/IMG_1487.JPG

>
> Ribbon
> CS80 - relative pitch bend of notes being played. Can bend up
> one octave max and down infinity! GX-1 - never sure how this
> worked. Got the impression that it actually triggered notes
> of the solo voice. Please clear this up!
>

I'm unsure about this ... I'll have to test it the next time I work
on the GX-1.

>
> Weight (had to put this in...)
> CS80 - about 200lbs/100kg
> GX-1 -600lbs / 250kg (does this include speakers,
> pedals, and bench?)
>

Well, according to the service manual the GX-1 unit weights about 300
kg not including the bench, pedal keyboard and tone cabs. The bench
alone weight about 60 kg and the pedal board weights about 27 kg.

Best regards
Niklas

Hi David,

About numbers -I always thought around 2000 CS80's were made...!
Is it really only 1000 ... ?

Cheers,
TOM

--- In yamahacs80@yahoogroups.com, David Rogoff <david@...> wrote:
>
> Number made
> CS80 - about 1000
> GX-1 - about 50.
>
> I'd welcome anyone who knows this stuff to fill in any info or ask any
> questions I haven't though of.
>
> David
>

Thanks Niklas.

neriks2003 wrote:

>> It looks like the GX-1 uses the knee lever where the CS80
>> uses aftertouch. True?
> Yes, it's true ...
>
>> It looks like the GX-1 doesn't have poly-aftertouch, so
>> you can't add modulation to just some notes. True
> Yes, it's true. I think that the polyphonic aftertouch is one of the
> few drawbacks of the GX-1 compared to the CS-80.
>

Huh. I never realized that. Bummer! Do the two manuals have velocity?

>
> The GX-1 has 10 x 2 presets for Lower keyboard, Upper keyboard and
> the pedal keyboard. The solo keyboard have 10 presets.
>
> Some of the settings can be tweaked in the same manner as the CS-
> 80 ... like the effect/performance controls (brilliance and
> resonance). Apart from these you'll need one or more tone-boards to
> change the actual sound. Here is a picture of a tone-board ...
>
> http://www.neriks.com/Temp/IMG_1487.JPG
>

Very cool! So to have the real-time programming of a CS80, I'd need to
get six of these boxes, mount them in a giant frame and connect them in
place of a tone card for each voice section! That would totally blow
away the Jellinghaus programmer for the DX7
(www.synrise.de/guests/lorenz/coll/jellinghDX.html).

Hi,

>
> > Yes, it's true. I think that the polyphonic aftertouch
> > is one of the few drawbacks of the GX-1 compared to the
> > CS-80.
> >
> Huh. I never realized that. Bummer! Do the two manuals
> have velocity?
>

No velocity

>
> Very cool! So to have the real-time programming of a CS80,
> I'd need to get six of these boxes, mount them in a giant
> frame and connect them in place of a tone card for each
> voice section! That would totally blow
> away the Jellinghaus programmer for the DX7
> (www.synrise.de/guests/lorenz/coll/jellinghDX.html).
>

You would in fact need seven tone-boards. One for each section and
row! ;-)

Lower keyboard row I
Lower keyboard row II
Upper keyboard row I
Upper keyboard row II
Pedal keyboard row I
Pedal keyboard row II
Solo keybaord

I'm planning to build at least two additional tone-boards to the GX-1
that I'm working on.

/Niklas

According to Kent, it was 786 units made. I for one scrambled up my memory about a #1791, mind you.

Stephen

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----- Original Message -----
From: Quazimodo
To: yamahacs80@yahoogroups.com
Sent: Tuesday, November 20, 2007 1:01 AM
Subject: [yamahacs80] Re: Total # of voices in a GX1?


Hi David,

About numbers -I always thought around 2000 CS80's were made...!
Is it really only 1000 ... ?

Cheers,
TOM

--- In yamahacs80@yahoogroups.com, David Rogoff <david@...> wrote:
>
> Number made
> CS80 - about 1000
> GX-1 - about 50.
>
> I'd welcome anyone who knows this stuff to fill in any info or ask any
> questions I haven't though of.
>
> David
>





[Non-text portions of this message have been removed]

Only 786 unit made !? - Wow.... so this begs a question.
Does anyone here know how the serial numbers relate to the run of 786..?

Like where did they start and finish...?

Cheerz,
TOM



--- In yamahacs80@yahoogroups.com, "Wavecomputer360"
<wavecomputer360@...> wrote:

>
> According to Kent, it was 786 units made. I for one scrambled up my

memory about a #1791, mind you.

>
> Stephen
>

--- In yamahacs80@yahoogroups.com, "neriks2003" <niklas@...> wrote:

> > > Yes, it's true. I think that the polyphonic aftertouch
> > > is one of the few drawbacks of the GX-1 compared to the
> > > CS-80.
> > >
> > Huh. I never realized that. Bummer! Do the two manuals have

velocity?

> No velocity

Wow. So the solo/mono keyboard is the only one with any touch sensitivity.

> > Very cool! So to have the real-time programming of a CS80,
> > I'd need to get six of these boxes, mount them in a giant
> > frame and connect them in place of a tone card for each
> > voice section!
>
> You would in fact need seven tone-boards. One for each section and
> row! ;-)
>
> I'm planning to build at least two additional tone-boards to the

GX-1 that I'm working on.

Definitely send us pictures! I love how they mount the EG level
sliders vertically and the EG time sliders horizontally.

Following up on this, I looked at the voice-card parameters from the
tone board and compared it to the CS80. I put a picture here:

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/browse/e183

It looks like the GX1 adds a triangle wave and static filtered
versions of the square and sawtooth waves. There's also a polarity
switch on the VCF EG output. It looks like it's missing the sine wave
bypassing the VCFs (which I think is really useful). It also looks
like the touch response settings are missing, which make sense given
the previous info from Niklas. I'm also not sure if each voice has
it's own PWM oscillator.

How do people who have used both instruments think these differences
affect the sound? I also remember Crow's analysis and recreation of
the VCFs in both and that they sounded different from each other. How
close can a CS80 come to sounding like a GX1? What about stuff other
than the voice cards? Ring-mod? Sub Oscillators? Other controls?

David

When i looked at the waveshaper chip on the CS80 M boards, it appears
to also have a pin for triangle wave..... I believe I have a blown up
picture of that chip circuitry in the photos section....

Has anyone tried adding the triangle option???


-----Original message-----
From: "David Rogoff" david@...
Date: Wed, 21 Nov 2007 15:15:46 -0700
To: yamahacs80@yahoogroups.com
Subject: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a GX1?

--- In yamahacs80@yahoogroups.com, "neriks2003" wrote:
> > > Yes, it's true. I think that the polyphonic aftertouch
> > > is one of the few drawbacks of the GX-1 compared to the
> > > CS-80.
> > >
> > Huh. I never realized that. Bummer! Do the two manuals have
velocity?
> No velocity

Wow. So the solo/mono keyboard is the only one with any touch
sensitivity.

> > Very cool! So to have the real-time programming of a CS80,
> > I'd need to get six of these boxes, mount them in a giant
> > frame and connect them in place of a tone card for each
> > voice section!
>
> You would in fact need seven tone-boards. One for each section and
> row! ;-)
>
> I'm planning to build at least two additional tone-boards to the
GX-1 that I'm working on.

Definitely send us pictures! I love how they mount the EG level
sliders vertically and the EG time sliders horizontally.

Following up on this, I looked at the voice-card parameters from the
tone board and compared it to the CS80. I put a picture here:

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/browse/e183

It looks like the GX1 adds a triangle wave and static filtered
versions of the square and sawtooth waves. There's also a polarity
switch on the VCF EG output. It looks like it's missing the sine wave
bypassing the VCFs (which I think is really useful). It also looks
like the touch response settings are missing, which make sense given
the previous info from Niklas. I'm also not sure if each voice has
it's own PWM oscillator.

How do people who have used both instruments think these differences
affect the sound? I also remember Crow's analysis and recreation of
the VCFs in both and that they sounded different from each other. How
close can a CS80 come to sounding like a GX1? What about stuff other
than the voice cards? Ring-mod? Sub Oscillators? Other controls?

David





[Non-text portions of this message have been removed]

wave shape converter....IC9 IG00158

I believe

SO is Saw out, PO is Square(pulse) out, SIO is SINE out

What would TO or 2TO be???


http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/view/a8d5?b=38
-----Original message-----
From: "David Rogoff" david@...
Date: Wed, 21 Nov 2007 15:15:46 -0700
To: yamahacs80@yahoogroups.com
Subject: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a GX1?

--- In yamahacs80@yahoogroups.com, "neriks2003" wrote:
> > > Yes, it's true. I think that the polyphonic aftertouch
> > > is one of the few drawbacks of the GX-1 compared to the
> > > CS-80.
> > >
> > Huh. I never realized that. Bummer! Do the two manuals have
velocity?
> No velocity

Wow. So the solo/monokeyboard is the only one with any touch
sensitivity.

> > Very cool! So to have the real-time programming of a CS80,
> > I'd need to get six of these boxes, mount them in a giant
> > frame and connect them in place of a tone card for each
> > voice section!
>
> You would in fact need seven tone-boards. One for each section and
> row! ;-)
>
> I'm planning to build at least two additional tone-boards to the
GX-1 that I'm working on.

Definitely send us pictures! I love how they mount the EG level
sliders vertically and the EG time sliders horizontally.

Following up on this, I looked at the voice-card parameters from the
tone board and compared it to the CS80. I put a picture here:

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/browse/e183

It looks like the GX1 adds a triangle wave and static filtered
versions of thesquare and sawtooth waves. There's also a polarity
switch on the VCF EG output. It looks like it's missing the sine wave
bypassing the VCFs (which I think is really useful). It also looks
like the touch response settings are missing, which make sense given
the previous info from Niklas. I'm also not sure if each voice has
it's own PWM oscillator.

How do people who have used both instruments think these differences
affect the sound? I also remember Crow's analysis and recreation of
the VCFs in both and that they sounded different from each other. How
close can a CS80 come to sounding like a GX1? What about stuff other
than the voice cards? Ring-mod? Sub Oscillators? Other controls?

David





[Non-text portions of this message have been removed]

TO= triangle output
2TO= double triangle out
As the triangle is derived from the sawtooth by a rectifing process, it goes only positive (0 to 1).
Don't know how the doule triangle is output , though.
The sine is obtained by slewing the triangle tips, so as you hear you get a very good sine, though not a perfect one.
M

PS(and OT): I'm looking for infos about the roland VP330, or at least a good scan of the ensemble's diagram. any help?
M

----- Original Message -----
From: Laurie Curry
To: yamahacs80@yahoogroups.com
Sent: Thursday, November 22, 2007 2:03 AM
Subject: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a GX1?



wave shape converter....IC9 IG00158

I believe

SO is Saw out, PO is Square(pulse) out, SIO is SINE out

What would TO or 2TO be???

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/view/a8d5?b=38
-----Original message-----
From: "David Rogoff" david@...
Date: Wed, 21 Nov 2007 15:15:46 -0700
To: yamahacs80@yahoogroups.com
Subject: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a GX1?

--- In yamahacs80@yahoogroups.com, "neriks2003" wrote:
> > > Yes, it's true. I think that the polyphonic aftertouch
> > > is one of the few drawbacks of the GX-1 compared to the
> > > CS-80.
> > >
> > Huh. I never realized that. Bummer! Do the two manuals have
velocity?
> No velocity

Wow. So the solo/monokeyboard is the only one with any touch
sensitivity.

> > Very cool! So to have the real-time programming of a CS80,
> > I'd need to get six of these boxes, mount them in a giant
> > frame and connect them in place of a tone card for each
> > voice section!
>
> You would in fact need seven tone-boards. One for each section and
> row! ;-)
>
> I'm planning to build at least two additional tone-boards to the
GX-1 that I'm working on.

Definitely send us pictures! I love how they mount the EG level
sliders vertically and the EG time sliders horizontally.

Following up on this, I looked at the voice-card parameters from the
tone board and compared it to the CS80. I put a picture here:

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/browse/e183

It looks like the GX1 adds a triangle wave and static filtered
versions of thesquare and sawtooth waves. There's also a polarity
switch on the VCF EG output. It looks like it's missing the sine wave
bypassing the VCFs (which I think is really useful). It also looks
like the touch response settings are missing, which make sense given
the previous info from Niklas. I'm also not sure if each voice has
it's own PWM oscillator.

How do people who have used both instruments think these differences
affect the sound? I also remember Crow's analysis and recreation of
the VCFs in both and that they sounded different from each other. How
close can a CS80 come to sounding like a GX1? What about stuff other
than the voice cards? Ring-mod? Sub Oscillators? Other controls?

David

[Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]

could triangle be affected by the pulse width modifier?
-----Original message-----
From: "Max Fazio" faxiomas@...
Date: Wed, 21 Nov 2007 18:16:52 -0700
To: yamahacs80@yahoogroups.com
Subject: Re: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a
GX1?

TO= triangle output
2TO= double triangle out
As the triangle is derived from the sawtooth by a rectifing process,
it goes only positive (0 to 1).
Don't know how the doule triangle is output , though.
The sine is obtained by slewing the triangle tips, so as you hear you
get a very good sine, though not a perfect one.
M

PS(and OT): I'm looking for infos about the roland VP330, or at least
a good scan of the ensemble's diagram. any help?
M

----- Original Message -----
From: Laurie Curry
To: yamahacs80@yahoogroups.com
Sent: Thursday, November 22, 2007 2:03 AM
Subject: [yamahacs80] CS80 vs. GX1 - Re: Total # ofvoices in a GX1?



wave shape converter....IC9 IG00158

I believe

SO is Saw out, PO is Square(pulse) out, SIO is SINE out

What would TO or 2TO be???

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/view/a8d5?b=38
-----Original message-----
From: "David Rogoff" david@...
Date: Wed, 21 Nov 2007 15:15:46 -0700
To: yamahacs80@yahoogroups.com
Subject: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a GX1?

--- In yamahacs80@yahoogroups.com, "neriks2003" wrote:
> > > Yes, it's true. I think that the polyphonic aftertouch
> > > is one of the few drawbacks of the GX-1 compared to the
> > > CS-80.
> > >
> > Huh. I never realized that. Bummer! Do the two manuals have
velocity?
> No velocity

Wow. So the solo/monokeyboard is the only one with any touch
sensitivity.

> > Very cool! So to have the real-time programming of a CS80,
> > I'd need to get six of these boxes, mount them in a giant
> > frame and connect them in place of a tone card for each
> > voice section!
>
> You would in fact need seven tone-boards. One for each section and
> row! ;-)
>
> I'm planning to build at least two additional tone-boards to the
GX-1 that I'm working on.

Definitely send us pictures! I love how they mount the EG level
sliders vertically and the EG time sliders horizontally.

Following up on this, I looked at the voice-card parameters from the
tone board and compared it to the CS80. I put a picture here:

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/browse/e183

It looks like the GX1 adds a triangle wave and static filtered
versions of thesquare and sawtooth waves. There's also apolarity
switch on the VCF EG output. It looks like it's missing the sine wave
bypassing the VCFs (which I think is really useful). It also looks
like the touch response settings are missing, which make sense given
the previous info from Niklas. I'm also not sure if each voice has
it's own PWM oscillator.

How do people who have used both instruments think these differences
affect the sound? I also remember Crow's analysis and recreation of
the VCFs in both and that they sounded different from each other. How
close can a CS80 come to sounding like a GX1? What about stuff other
than the voice cards? Ring-mod? Sub Oscillators? Other controls?

David

[Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]




[Non-text portions of this message have been removed]

No, just the pulse ;-)
M

----- Original Message -----
From: Laurie Curry
To: yamahacs80@yahoogroups.com
Sent: Thursday, November 22, 2007 2:51 AM
Subject: Re: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a GX1?


could triangle be affected by the pulse width modifier?
-----Original message-----
From: "Max Fazio" faxiomas@...
Date: Wed, 21 Nov 2007 18:16:52 -0700
To: yamahacs80@yahoogroups.com
Subject: Re: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a
GX1?

TO= triangle output
2TO= double triangle out
As the triangle is derived from the sawtooth by a rectifing process,
it goes only positive (0 to 1).
Don't know how the doule triangle is output , though.
The sine is obtained by slewing the triangle tips, so as you hear you
get a very good sine, though not a perfect one.
M

PS(and OT): I'm looking for infos about the roland VP330, or at least
a good scan of the ensemble's diagram. any help?
M
----- Original Message -----
From: Laurie Curry
To: yamahacs80@yahoogroups.com
Sent: Thursday, November 22, 2007 2:03 AM
Subject: [yamahacs80] CS80 vs. GX1 - Re: Total # ofvoices in a GX1?

wave shape converter....IC9 IG00158

I believe

SO is Saw out, PO is Square(pulse) out, SIO is SINE out

What would TO or 2TO be???

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/view/a8d5?b=38
-----Original message-----
From: "David Rogoff" david@...
Date: Wed, 21 Nov 2007 15:15:46 -0700
To: yamahacs80@yahoogroups.com
Subject: [yamahacs80] CS80 vs. GX1 - Re: Total # of voices in a GX1?

--- In yamahacs80@yahoogroups.com, "neriks2003" wrote:
> > > Yes, it's true. I think that the polyphonic aftertouch
> > > is one of the few drawbacks of the GX-1 compared to the
> > > CS-80.
> > >
> > Huh. I never realized that. Bummer! Do the two manuals have
velocity?
> No velocity

Wow. So the solo/monokeyboard is the only one with any touch
sensitivity.

> > Very cool! So to have the real-time programming of a CS80,
> > I'd need to get six of these boxes, mount them in a giant
> > frame and connect them in place of a tone card for each
> > voice section!
>
> You would in fact need seven tone-boards. One for each section and
> row! ;-)
>
> I'm planning to build at least two additional tone-boards to the
GX-1 that I'm working on.

Definitely send us pictures! I love how they mount the EG level
sliders vertically and the EG time sliders horizontally.

Following up on this, I looked at the voice-card parameters from the
tone board and compared it to the CS80. I put a picture here:

http://launch.ph.groups.yahoo.com/group/yamahacs80/photos/browse/e183

It looks like the GX1 adds a triangle wave and static filtered
versions of thesquare and sawtooth waves. There's also apolarity
switch on the VCF EG output. It looks like it's missing the sine wave
bypassing the VCFs (which I think is really useful). It also looks
like the touch response settings are missing, which make sense given
the previous info from Niklas. I'm also not sure if each voice has
it's own PWM oscillator.

How do people who have used both instruments think these differences
affect the sound? I also remember Crow's analysis and recreation of
the VCFs in both and that they sounded different from each other. How
close can a CS80 come to sounding like a GX1? What about stuff other
than the voice cards? Ring-mod? Sub Oscillators? Other controls?

David

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