Is "Duo" mode functioning correctly?

Quadra emulates one of the quirkiest, rarest, and most curiosity-inspiring vintage synthesizers of all time, the 1978 ARP Quadra.
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bhubauer
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Joined: Wed Nov 24, 2021 3:35 pm

Is "Duo" mode functioning correctly?

Post by bhubauer »

I've never owned a real Quadra, so I don't know the correct Duo mode (2 voice) behavior, but it seems wrong to me.

I observe the following:
* Press and hold note 1 = both oscillators play note 1
* While continuing to hold note 1, add note 2 = Osc 1 plays note 1, Osc 2 plays note 2
* Release Note 2 = Osc 1 plays note 1, Osc 2 continues to play note 2 (no change)

Is this the correct behavior?

My expectation is that when I release note 2, Osc 2 will go back to note 1.

Regards,
Bill

ps. Other than this strange behavior, I'm over the moon happy with this synth. Outstanding job!
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cherryaudio Greg
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Joined: Wed Aug 29, 2018 5:06 pm

Re: Is "Duo" mode functioning correctly?

Post by cherryaudio Greg »

Hi,

This is the way the circuit worked on the original hardware. When you hear songs from the era, the musicians were working with this same 2 voice lead capability.

Greg
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