Hi,
Here are some thoughts about the EQ...
The raw data with corrected ER and PIR:
Score no EQ: 4.48
With Sub: 6.73
Spinorama with no EQ:
- HF too hot
- some peaks in the 700 - 2000Hz range
View attachment 106809
Directivity:
Better stay at tweeter height
Horizontally, better toe-in the speakers by 10/15deg and have the axis crossing in front of the listening location, might help dosing the upper range.
The response will be much closer to the LW that is deigned for "flattish" in particular above 4000Hz.
View attachment 106815
View attachment 106811
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.
- LW/Score pretty close so the decent directivity helps
- HighPass filter added to help below 50Hz and maximize the performance within the bandwidth
Score EQ LW: 6.2
with sub: 8.4
Score EQ Score: 6.53
with sub: 8.73
Code:
Paradigm 15B APO EQ LW 96000Hz
January182021-143403
Preamp: -2 dB
Filter 1: ON PK Fc 49 Hz Gain 0 dB Q 1.15
Filter 2: ON PK Fc 177 Hz Gain -1.95 dB Q 1.43
Filter 3: ON PK Fc 865 Hz Gain -2.57 dB Q 3
Filter 4: ON PK Fc 1331 Hz Gain -3.16 dB Q 7.7
Filter 5: ON PK Fc 1873 Hz Gain 1 dB Q 2
Filter 6: ON PK Fc 6530 Hz Gain -1 dB Q 2.5
Filter 7: ON PK Fc 10657 Hz Gain -3.78 dB Q 1.4
Paradigm 15B APO EQ Score 96000Hz
January182021-142658
Preamp: -2 dB
Filter 1: ON HPQ Fc 48.5 Hz Gain 0 dB Q 1.15
Filter 2: ON PK Fc 174.5 Hz Gain -1.95 dB Q 1.33
Filter 3: ON PK Fc 857 Hz Gain -2.46 dB Q 2.55
Filter 4: ON PK Fc 1334 Hz Gain -2.18 dB Q 4.62
Filter 5: ON PK Fc 1710 Hz Gain 1.5 dB Q 2.21
Filter 6: ON PK Fc 5510 Hz Gain -1 dB Q 4.75
Filter 7: ON PK Fc 7436 Hz Gain -1 dB Q 2.72
Filter 8: ON PK Fc 11047 Hz Gain -4.12 dB Q 1.26
View attachment 106821
Spinorama EQ LW
View attachment 106807
Spinorama EQ Score
View attachment 106808
Zoom PIR-LW-ON
View attachment 106805
Regression - Tonal
close to flat regression ON when EQ score is use
View attachment 106806
Radar no EQ vs EQ score
Large improvements
View attachment 106804
Bonus:
@amirm EQ
Score EQ LW: 5.57
with sub: 7.76
View attachment 106823
View attachment 106822
The rest of the plots is attached.