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B3 - same note - different drawbar - different volume?

Postby Tracii » 17 Dec 2019, 11:53

Hello,

when I'm playing the same notes with different keys through different drawbar settings, it seems to me that there is a tiny but noticeable volume difference, i.e. the lower drawbars are slightly louder that the higher ones. Is that correct or is my mind playing tricks on me?

Example:
Drawbar setting 888000000, playing middle C - this gives me middle C, the C below it and the G above it.
Drawbar setting 008880000, playing the C below middle C - this also gives me middle C, the C below it and the G above it. The sound is the same, but it seems to be a fraction softer in volume than the other combination.

The effect is more pronounced when I play chords instead of single notes.

Best,
Fabian
Last edited by Tracii on 17 Dec 2019, 12:05, edited 1 time in total.
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B3 - same note - different drawbar - different volume?


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Re: B3 - same note - different drawbar - different volume?

Postby mon8169 » 18 Dec 2019, 10:47

in the second drawbar setting, you play 1 octave lower, isn't it? If yes, it has to be the same volume because the tonewheels active are exactly the same.

Ramon
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Re: B3 - same note - different drawbar - different volume?

Postby Tracii » 18 Dec 2019, 11:57

mon8169 wrote:in the second drawbar setting, you play 1 octave lower, isn't it? If yes, it has to be the same volume because the tonewheels active are exactly the same.

Yes, the notes that sound are the same. However, somehow I feel as if the second drawbar setting sounds a wee (wee wee wee!) bit softer. And it shouldn't. :wtf:
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Re: B3 - same note - different drawbar - different volume?

Postby WannitBBBad » 18 Dec 2019, 12:56

Maybe record your test without Leslie effect and look at the wave amplitudes to see if there's a difference.
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Re: B3 - same note - different drawbar - different volume?

Postby analogika » 25 Dec 2019, 19:50

Various generations of various console models are wired slightly differently.

Or are you hearing differences especially in the lower octave or so? Because that is where the foldback happens: because there are fewer tonewheels than would be necessary to cover all partials across the entire keyboard, the lower tones will repeat across the lower ten notes or so, and the highest partials across the upper octave or so.
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