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In Reply to: DSP stereo posted by Peter on November 15, 1999 at 20:10:40:
The gist of the problem is that there are 12 amplified channels comming out of the DSP amp. There is no pre-amp level going to the DSP unit. FM / tape, enters the DSP amp, at a pre-amp level, but it is not volume adjusted, doing you no good. Anyway, while most decent amps will take the amplified channels as input, most people want to use 5 channels of amplification (2 fr, 2 rear, 1 sub). Getting from 12 -> 5 is the hard part. This is compounded by the fact that the DSP filters the output for their (crappy) speakers.
The most successful upgrades on the DSP unit is to take out the factory subs under the rear deck, add your own, and add some venting to the rear deck to allow the subs to pass through. In this case you'd just amplify the subs. Another variation is to replace the speakers in the factory sub enclosure and add amps as mentioned previously.
In my car I have the rear speaker inputs combined using some gizmo my installers have used before. This then runs four channels. So I have no fade, and ~100-300 Hz is missing. I have 2 solobaric 10" subs where the spare tire used to be. It really sounds bizarre in most cases as there is great sub-bass, but no "hit". For example the snare drum is basically missing all together.
My plan is to grab the full spectrum pre-amp signal out of the amp if I can ever find it. That's another long story.
Hope that clears it up for you ;-)
: I know there has been many posts about DSP stereo, but nothing very clear.
: A stereo place is saying without a doubt they can add subs to my system that will sound great.
: They plan on firing sub into trunk but remove part of rearseat firewall so sound will travel through.
: They said they will take amp signal from DSP amp and add additional amp.
: Any addvise, I would love to hear a system before doing it.
: thanks
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