Here is my take on the EQ.
The raw data with corrected ER and PIR:
Score no EQ: 4.2, not great
With Sub: 6.45
Spinorama with no EQ:
- The response is not that smooth
- The HF is obviously too hot
- smooth DI will help for EQ
- It would be nice to see the impact of the built-in EQs and check wether that can be helpful.
Directivity:
Nice directivity
Better stay at tweeter height
Horizontally, better toe-in the speakers by 10/20deg and have the axis crossing in front of the listening location, might help smoothing things out.
It will definitely help with the HF.
EQ design:
I have generated two EQs. The
APO config files are attached.
- The first one, labelled, LW is targeted at making the LW flat
- The second, labelled Score, starts with the first one and adds the score as an optimization variable.
- The EQs are designed in the context of regular stereo use i.e. domestic environment, no warranty is provided for a near field use in a studio environment although the LW might be better suited for this purpose.
- Quite a few sharp PK, would need careful ABX evaluation to verify if they are actually beneficial.
Score EQ LW: 5.57, already a nice improvement
with sub: 7.86
Score EQ Score: 6.29
with sub: 8.49
Code:
Adam T5V APO EQ LW 96000Hz
December072020-135609
Preamp: -1 dB
Filter 1: ON PK Fc 309.5 Hz Gain 1 dB Q 1.5
Filter 2: ON PK Fc 815 Hz Gain -1.5 dB Q 3.97
Filter 3: ON PK Fc 1349 Hz Gain -1.85 dB Q 5.29
Filter 4: ON PK Fc 7805 Hz Gain -0.7 dB Q 3
Filter 5: ON PK Fc 5738 Hz Gain -2.26 dB Q 3.87
Filter 6: ON PK Fc 10291 Hz Gain -2.06 dB Q 1.15
Adam T5V APO EQ Score 96000Hz
December072020-135241
Preamp: -1.2 dB
Filter 1: ON PK Fc 322.5 Hz Gain 1 dB Q 1.05
Filter 2: ON PK Fc 826 Hz Gain -2.42 dB Q 5.8
Filter 3: ON PK Fc 1353 Hz Gain -1.12 dB Q 7.25
Filter 4: ON PK Fc 1680 Hz Gain -0.95 dB Q 5.25
Filter 5: ON PK Fc 3285 Hz Gain 1.7 dB Q 9.23
Filter 6: ON PK Fc 4589 Hz Gain 1.7 dB Q 9.14
Filter 7: ON PK Fc 12913 Hz Gain -1.2 dB Q 3.75
Filter 8: ON PK Fc 5470 Hz Gain -3.51 dB Q 2.91
Filter 9: ON PK Fc 8857 Hz Gain -2.06 dB Q 1.56
Spinorama EQ LW
Spinorama EQ Score
Zoom PIR-LW-ON
Regression - Tonal, still very slightly ascending once EQed
Radar no EQ vs EQ score
Large improvements
The rest of the plots is attached.