Hello, are there any update replies to my 2 posts above?
Sounds like you need a bit of an eq primer. I couldn't find one on here but this covers the basics.
https://homestudiorecordings.com/parametric-eq/
I don't know how SoundSource works to apply any of this so youd have to look that up in the manual.
One thing from your first post, more filters does not necessarily equal better as applying the wrong filter, or one where it isn't needed can be detrimental.
There are a few main approaches to PEQ I find ;
1. Model to a target curve exactly. This is the auto eq approach. Taking the measurements of the headphone and using software to work out a number of filters that bring the measured response to the target response. Users then either type these filters into their eq software, upload them from the source or possibly import a pre done convolution filter.
2. Take the Amir approach which is measure, compare to target, make a few obvious adjustments, listen again and tweak until the results sound good. That's why he only uses 2, he's not trying to map to the target precisely, just to improve obvious areas to his ears.
3.Freestyle. User doesn't measure or seek established measurements or indeed targets and plays around seeing what works for them. This might be easy to get improvements in large areas of the response (like a few dB low shelf in the bass for a headphone with reduced bass) but unlikely to work well for more specific deficiencies.
My advice. Start with method 1 using either auto eq settings or oratory1990 presets and fiddle with those to taste.
Another point about the bose. Take care with how you are using them. There are 5 settings each of which, I think, has a different frequency response and sound :
Wired off
Wired on (this means anc is on high and can't be disabled)
Wireless anc high (default)
Wireless anc low
Wireless anc off (this one is very different to the 2 above)
So you really need to know which of these the measurer is using. For amir's eq it is, I believe, for wired on.
Sorry for rambling!