Hi Cardsin.
Don't care loopback or acoustic , if subwoofer 12ms, and left mid bass 8 , bass is 9 tw is. 10, car audio dsp delay time setting is subwoofer = 12-12=0. mid bass =12-8=4 ,bass =12-9 =3 ,
tw=12-10=2 , so , measure again, you can get all driver=12ms.