here is how it goes.. (archive)

First, a premium system can be converted to standard by disconnecting the dsp cable and coaxial digital cable. The system will then disable the DSP option on the tuner, and the tuner will start outputting a clean signal.
I have not confirmed yet what needs to be addressed on the NAV to support the new analog signalling, I do know the CD changer (glove or trunk) just needs the analog audio cable hooked up (thats why I ran both the digital coaxial cable and the analog cable just incase).

But what I did was replaced all the speakers on my premium with MB Quart, which dropped the ohm rating on all amp channels to 4 ohm from 8ohm, allowing it to provide enough power to these babies to make some nice clean music.

Then you take an Alpine MRV-100M with built in speaker inputs and patch it directly to where the DSP sub box use to hook up, or get a AudioLink, Power Link 2, RCA Converter, and convert that sub signal down to rca and run it into a different amp (I am going to use an Alpine V12 MRV-T500 because I have it laying around), which then will run into my S10L7 Kicker 2 ohm DVC sub ran at 4 ohm into the amp.

What will I have?
Clean brighter mids and tweeters, nice clean bass.
Increased midbass quality from stock speakers.

What am I missing out?
Just a little midbass quality at high high listening levels. Depends on the music, but the DSP amp can only do so much to the MB quart 5.25" midbass units in the doors and rear deck. ITs clean at normal listening volumes, but if you crank it you can hear it possible distort a little on certain music.

Other option?
disable DSP completely, patch into Tuner preamp outputs like AK did, and run them into a nice 5/6 channel amplifier. Might ask AK how he did it...

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