Questions for Jim- I did a similiar upgrade like yours in my 97 854, except the Dynaudio speakers!!(I went with Infinity Kappas in all doors). Since you have an S70, where did u install your amp for the SC-901? Also, based on the Part # for amp. you gave in the article, it came back as a "booster" for radio! Do you know the approx. size of that unit? the amp I bought is about 7"x4" and a bit-squarish(It was a amp from a 92 780 Bertone-long story). I had to have a pro install it behind the HVAC controls. I was told under the pass. seat but obviously the cable couldn't reach from radio to there.
Anyways, I don't know how the oringinal poster claim his stock system in 850 is better than the Bose(speakers) in his TL!!! The 850 have a decent head-unit but shitty speakers; it NEEDS amplification and defination! Since I did my upgrade in stages, I can tell you that Few OEM systems have great speakers(except the C70 and maybe the Levison in the LS). after i did speakers, the headunit did it no justice(lacking power; distortion if cranked up). Plus the built in EQ was not the best; so I got the SC901 and all my problems are solved. I've also added a separate Sub and I have a pretty decent system now. Good luck, D
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