Polyphony Expansion mode, Motif, S80, MU, CS6X, etc.

Virtual Acoustic physical modeling synthesis mathematically simulates the sound and characteristics of acoustic instruments in real-time. This forum covers the VL1, VL7 and VL-70 as well as the PLG100-VL and PLG150-VL plug in boards.

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2ManyKeys
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Polyphony Expansion mode, Motif, S80, MU, CS6X, etc.

Unread post by 2ManyKeys » Sat Aug 18, 2018 1:55 pm

I finally found a reference in a Yamaha doc as to why two PLG-150VL boards will automatically act like a two-note polyphonic VL board. It's a standard feature of the Motif, S80, CS6X, and obviously the MU series as well. This behavior is the same in any case where multiple (up to 3) identical PLG boards are connected in the same host. So it's possible to have a 3-note VL if you really want one.

This is taken from the PLG150VL_Motif.pdf document distributed by Yamaha.

On the Motif: Press [UTILITY]/[F6] PLG button
to check the status screen:

The “Expand” parameter will be active only when you
have 2 or more PLG150 series boards of the same type
installed and polyphony expansion is possible. A second
PLG150-DX can give you a maximum of 32 notes of FM
polyphony in Expand poly mode. A third PLG150 can
give you 48 notes total. Because the System is
modular, this polyphony does not take away from the
64-note polyphony of the mothership host (S30 / S80 /
CS6x / CS6R / Motif6-7-8)- Nor does it contribute to a
pool of notes – they are completely separate. You, of
course, can use multiple boards as individuals, thus
increasing how many Parts you for which you will have
analog sounds available. If you have 2 VL boards you
can play with 2 notes of polyphony (Poly Expand mode)
or you can play 2 monophonic horns. The phrasing is
way different. When you begin to appreciate this
difference, you begin to really understand the beauty of
the VL technology.
Last edited by 2ManyKeys on Fri Oct 12, 2018 3:58 am, edited 1 time in total.
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javelin276
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Re: Polyphony Expansion mode, Motif, S80, MU, CS6X, etc.

Unread post by javelin276 » Sun Aug 26, 2018 6:20 pm

It also verifies that the two/three PLG boards can be used separately, using different timbres for each board.
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Re: Polyphony Expansion mode, Motif, S80, MU, CS6X, etc.

Unread post by 2ManyKeys » Thu Oct 11, 2018 4:04 am

True, if the host instrument allows you to control the "expansion" feature each plugin card can be used individually. The Motif and S80, S90 allow the user to set that, but I haven't found that option on the MU-2000 or 128 yet. The MU-2000 EX does allow you to set each PLG card to a different part which probably accomplishes shutting off "polyphony expansion". Not sure about it just yet.
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Re: Polyphony Expansion mode, Motif, S80, MU, CS6X, etc.

Unread post by 2ManyKeys » Sat Oct 13, 2018 9:25 pm

I found out just recently that this doesn't work quite the same way when using the Motif series as a host. I moved two PLG-150VL cards into a Motif Rack ES. After turning on the "polyphony expansion" on the Utils menu I expected both cards to start acting as a 2-note polyphonic VL card. Instead I found that the voice itself must be edited and changed from MONO to POLY mode in order for both cards to be accessed as a single 2-note card.

The MU-2000 Ex on the other hand immediately treats both cards as a single 2-note card without any editing. The MU series doesn't seem to have a "poly expansion" mode in the menus, so it may just be the default for the MU series. I'm not sure about that.

In any case, it's just a bit of info for those who are still using the VL cards.

Interesting.
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