In LP/LP mode, equivalent negative and positive Filter Spacing values sound different. Fully positive sounds (right side) much brighter than fully negative (left side). Therefore, applying LFO modulation to Filter Spacing sounds asymmetric.
Is this normal?
Voyager Filter Spacing double LP mode
Voyager Filter Spacing double LP mode
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Re: Voyager Filter Spacing double LP mode
The spacing only adjusts the right filter cutoff in LP/LP
Take a look at Greg's explanation in post #2
viewtopic.php?f=2&t=3556&hilit=Spacing
Take a look at Greg's explanation in post #2
viewtopic.php?f=2&t=3556&hilit=Spacing
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Re: Voyager Filter Spacing double LP mode
Hmm it 's weird.
I've just had a look to the Voyager's manual and the schemes are misleading as they indicate that both filter frequencies move when SPACING is changed, each in its direction.
Moreover, the manual then states the following:
- Make sure the filters are configured in DUAL LP mode
- Keep only NOISE on in the mixer
- Set the VCA on drone mode
- Set CUTOFF frequency at a reasonable value and SPACING at 0
- Increase RESONANCE until you can clearly here a pitched sound.
- Now, increase slowly SPACING and listen: you can hear a second pitch sound going up. What about the first one: does it stay steady, or does it go down?
- If you find it difficult to listen to each peak separately, you can listen output at a time.
All that being said, I trust GregAE when he says he tested that
I've just had a look to the Voyager's manual and the schemes are misleading as they indicate that both filter frequencies move when SPACING is changed, each in its direction.
Moreover, the manual then states the following:
Anyone having a Voyager, here is a simple way to check.The Voyager's manual wrote:Setting the SPACING control to +1 in Dual Lowpass mode means that the right filter has a cutoff frequency equal to where the CUTOFF control knob is set, and the left frequency has a cutoff frequency that is one octave higher than the right filter.
- Make sure the filters are configured in DUAL LP mode
- Keep only NOISE on in the mixer
- Set the VCA on drone mode
- Set CUTOFF frequency at a reasonable value and SPACING at 0
- Increase RESONANCE until you can clearly here a pitched sound.
- Now, increase slowly SPACING and listen: you can hear a second pitch sound going up. What about the first one: does it stay steady, or does it go down?
- If you find it difficult to listen to each peak separately, you can listen output at a time.
All that being said, I trust GregAE when he says he tested that
Toxic Overdrive | Minkovski | DNOT | Maetherial | Folie à 6
Re: Voyager Filter Spacing double LP mode
So the behavior of mine is as expected.ummagumma wrote: ↑Tue Mar 01, 2022 7:08 pm The spacing only adjusts the right filter cutoff in LP/LP
Take a look at Greg's explanation in post #2
viewtopic.php?f=2&t=3556&hilit=Spacing
Thank you very much for the link!
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Re: Voyager Filter Spacing double LP mode
Yow - a lot of confusion and bad info here, but for a good reason.
This left/right channel nomenclature is not helping so lets start with...
Filter A: Right channel
Filter B: Left channel
This is per the user manual and matches the schematics. It assumes that your Voyager is wired correctly. I believe the headphone jack was originally mis-wired (reversed) on many Voyagers including mine. I've since corrected it to match the Main outputs. You can easily test this.
In LP/LP mode the spacing controls affects only Filter B which again is the LEFT CHANNEL.
If you're looking at the schematics don't let the fact that the spacing circuitry appears on the A filter schematic page . It's quickly feeds the developed bias voltage over to the B side schematic
Hope this helps.
This left/right channel nomenclature is not helping so lets start with...
Filter A: Right channel
Filter B: Left channel
This is per the user manual and matches the schematics. It assumes that your Voyager is wired correctly. I believe the headphone jack was originally mis-wired (reversed) on many Voyagers including mine. I've since corrected it to match the Main outputs. You can easily test this.
In LP/LP mode the spacing controls affects only Filter B which again is the LEFT CHANNEL.
If you're looking at the schematics don't let the fact that the spacing circuitry appears on the A filter schematic page . It's quickly feeds the developed bias voltage over to the B side schematic
Hope this helps.
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Re: Voyager Filter Spacing double LP mode
Now that's precision!
Thanks
Thanks
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Re: Voyager Filter Spacing double LP mode
Haha, I was actually going to ping you about this!Markyboard wrote: ↑Thu Mar 03, 2022 12:39 pm Yow - a lot of confusion and bad info here, but for a good reason.
This left/right channel nomenclature is not helping so lets start with...
Filter A: Right channel
Filter B: Left channel
This is per the user manual and matches the schematics. It assumes that your Voyager is wired correctly. I believe the headphone jack was originally mis-wired (reversed) on many Voyagers including mine. I've since corrected it to match the Main outputs. You can easily test this.
In LP/LP mode the spacing controls affects only Filter B which again is the LEFT CHANNEL.
If you're looking at the schematics don't let the fact that the spacing circuitry appears on the A filter schematic page . It's quickly feeds the developed bias voltage over to the B side schematic
Hope this helps.
I forgot about the headphone wiring: checked with cans on & erroneously deduced right instead of left. That's probably why everyone else is saying right too, I don't think it's common knowledge the headphones are reversed?
Thanks for clearing that up!
Re: Voyager Filter Spacing double LP mode
Now that is quite confusing! I'd never have expected this.Markyboard wrote: ↑Thu Mar 03, 2022 12:39 pm This left/right channel nomenclature is not helping so lets start with...
Filter A: Right channel
Filter B: Left channel
And this is exactly how mine works. Thank you for the clarification!Markyboard wrote: ↑Thu Mar 03, 2022 12:39 pm In LP/LP mode the spacing controls affects only Filter B which again is the LEFT CHANNEL.
Bass Player and Synthesist.
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Re: Voyager Filter Spacing double LP mode
It makes sense, since the left channel is the mono out.
But from the front panel, adjusting the spacing knob "seems" right if it adjusts the right channel, through headphones. I wonder if that's how the headphone outs got flipped?
But from the front panel, adjusting the spacing knob "seems" right if it adjusts the right channel, through headphones. I wonder if that's how the headphone outs got flipped?