I have not either, and as was stated, if you are using a sub it will not matter anyway since you will be setting you AVR XO to send those lower frequencies to the sub.

LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7