Can someone explain how the filters can be used?
i specially find them confusing when both are LPF.
In which case does it make sense to set the second filter to LPF?
And would it still make sense to tweak both their cutoffs then?
You can create a twin peak low pass filter when both are set to lp. Keep both cutoff freqs so there’s only a small gap and turn up resonance on both. By varying resonance of the two filters and changing cutoff (on both at the same time or on one of them just a tiny bit), you can create all sorts of different timbres. The two filters will pick different harmonics out of the source material depending on how the cutoff freqs and reso are set.
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thanks, will give it a try! i still feel like i’m having a hard time masking the A4 sound as good as it can and i think one of the most important places to be able to make it sound good (or really bad) is the filter section
I’d say getting the modulation just right can make such an insane difference on the A4, but sure filters are definitely important!
Other things the two filters are good for:
Filter 1 lp and filter 2 hp with keytracking and resonance tuned to boost the low end. A4 can seem a bit weak in the low end with init settings and using the hp to boost low end can make it really beefy.
You can also use a neighbour track if you need more than two filters in series or want parallel filtering.
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makes sense. i feel like somewhere in the high mids it can start to sound ugly quickly. Somewhere in that area there is something about it’s sound that i really don’t like so much
Also, by default, filter 1 has a bit of resonance in it’s innit state (it’s at 32 iirc) . If you want to preserve the low frequencies you can roll it back to zero.
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Isn’t it 25? Anyways, whatever it is, the default resonance value is chosen, because the filter is flattest with those settings. With zero resonance, filter 1 drops some decibels both in the treble and in the bass.
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Set the filter keytrack value to 32 to:
…make the filter track the oscillator frequency in note intervals, making it possible to play the Filter 1 resonance the same way as an oscillator is played.
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OK maybe my ears trick me then, I tend to prefer the sound when res is at zero…
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Yeah, it always sounded like it had more low end with res set to zero, but I never tested it, until now.
And seems that is actually true. Filter 1 with res set to zero loses 3 db in the high frequencies around 18-20 khz compared to res set to 25, but it gains 5 db in the area around 80 hz and even 8 db at 100 hz when set to zero compared to 25.
Edit:
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difference looks subtle
Db scale is on the left, it’s within 3db most of the time. But doesn’t really matter anyway, I mean we dial in resonance like we want it to sound, so who cares what the default is. Default also looks more flat, so seems right what the manual mentions.
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i do know that very little tweaks can have lots of effect with the A4. I did just rediscover that listening to the A4’s presets helps me to confirm it’s definitely me when it sounds ugly and not the A4 haha
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Lol, yeah, that’s true! It can sound amazing and the presets are a good starting point for getting to know how subtle modulation combined can have a tremendous effect. Same for the Rytm btw.
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Well iirc the perceived volume double every 6 db so 3 db is still something big
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that one i don’t own but i can imagine. love how good the A4 is for making kicks though
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The different changes throughout the spectrum sort of balance out, so it’s not such a big difference combined and also this was white noise with default values, so filter fully open. I mean, I could hear something changed, but it was a timbral change.
Filter 1 is a 24/db oct filter, so I’d imagine it wouldn’t make a significant difference and as soon as resonance comes into play, the phase shift around the cutoff freq and generally filtering effects will have greater impact. Also depends if you want more top end or more low end, so there’s no right or wrong here, just different applications.
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Oh yes of course. It’s more a question of feeling I think. It took me a while to even notice resonance wasn’t at 0 by default and I had no complain about the sound
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i just realised that i could also use filter one for expressive tweaking and filter 2 for removing some ugly frequency range for instance. That may be just something that i need to make it sound good 
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