So the bass does roll of, quite a bit in fact, but the roll of starts below 50Hz.
Knowles does hide that by showing the SPL from 100Hz up in their data sheets.
I was able to solve the distortion issues by adding another orange (!) damper to the ED, basically downgrading it to a bass only driver. That also shaped the signature a bit more to my liking.
Now Savant finale definitively sounds much better than the BS6, except the BS6 has slightly more slam below 50Hz. Listen to "Hands Up (Acid Mix)" by "Dense & Pika" if you want to know why I sometimes want that
it's in medium quality on mixcloud in this set at 15:28:
)
Thank you so much for this suggestion. Now the BS6 sounds quite colored compared to these...
Remove the orange damper to fill 3kHz and get a complete harmanish curve. It should be red, so that it can peak at 3kHz
I think there is some issue with your bass, as mine seems completely fine and elevated, with decent slam
Which measurement calibration you are running though
Update: they do have less bass than BS6...
Well how about adding a specific heavy damped bass driver like CI to the mix.
You can easily add it.
20mm length/ 0.5mm ID(lower than 1mm ID)
Triple yellow dampers(one near spout, one near the center and one at 3/4 of tube)
0mm -> 10mm -> 15mm
3 ohms series resistance to be added
@eunice
Triple driver with the craziest mids from FED, midbss from ED30761 and subbass from CI22955
All full range helps balancing the impedance plus no crossover phase shifting
All driver are on 25ohms
Which means IEM impedance is 8.34ohms
Which is ~ 8ohms and is relatively borderline very low impedance and normal impedance
Neutrality is maintained, just the subbass is boosted
Plus triple heavy damping is something I came up recently
The near BA spout yellow damper will smoothen all peak from CI, center will roll off like low pass, and the last one will lower the sensitivity.
And three yellow dampers will add a delay subbass effect due to higher resistance or high surface area of yellow dampers. This will actually make all the bass add as a decay below 60Hz. Something like spiral ear se5u but not neat as the spiral ear delayed ignition CI driver.
The decay will sound like a very big dynamic driver(something like Sony xba z5 in quantity and quality, just crossed very low in subbass)
Neutrality is maintained
And here I defeated the BS6 + zobel in sound quality and lower driver numbers. BS6 + zobel wins for lower price