I have used these curves before Harmon curve (Cant remember where it came from)
31.5 6
40 5.9
50 5.5
63 4.9
80 3.7
100 2.5
125 1.3
160 0.6
200 0.2
250 0
1000 -1
32000 -6
As well as the JBL
20 9
25 9
31 9
40 9
50 9
63 9
80 6.5
100 4.25
125 2
160 0
200 0
250 0
315 0
400 0
500 0
630 0
800 0
1000 0
1200 0
1600 0
2000 0
2500 0
3100 0
4000 -1
5000 -2
6300 -3
8000 -4
10000 -5
12000 -6
16000 -6
20000 -6
And the EBU house curve
20 8
25 8
31.5 8
40 7
50 6
63 5
80 4
100 2
125 1
180 0
2000 0
4000 -1
8000 -2
16000 -3
20000 -3.5