A guy I know has asked me to build a couple boxes for him. He has 2 JL Audio 10w3's and 2 12w3's. He insists that he wants all of them hooked up even after I explained about frequency distortion. I really dont care cuz im getting paid to make them . What I need to know is what can I tune the boxes to so the distortion is not bad. He is wanting the 12's tuned to 32 hz so what should I tune the 10's to? The dimensions available are 12s- 40"wide x 25" deep x 14" tall 10s- 36" wide x 12" deep x 14"tall. Any suggestions?