Wh stato oem subs

[mdublm]

Hi all got a question about the sub circuit in wh stato. Is the input signal speaker level or low "RCA" level? Would like to fit larger amp, and some better quality free air 8" subs in original mounts, whilst maintaining original head unit for the moment.

[Phreddy]

Speaker level - basically there's a LOC built in to the OEM amp...

[Holdens Rule]

I have seen a mod done on a standard stereo where the internal amplifier is removed and a set of RCA's are installed into the head unit with good results as the signal is much better. Does anyone know how to do it on a calais or stateman unit or is it basically the same as a single cd unit?