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Message: <blockquote data-quote="forbidden" data-source="post: 403227" data-attributes="member: 552189">From your sig, your on the way to a decent system. True that install can make or break a system but it all starts at the head unit. SQ starts with the signal. The more that a signal is manipulated by a processor or eq or whatever, generally speaking the less there is in the end.As for the preout voltage it is really quite simple to understand, it is just not common knowledge to those outside of the industry looking in at it. I'll pick on Alpine (no offence, just it has documented proof) (Alpine is my second choice of a mid-fi line to retail after Panasonic). They claim to have a 4 volt pre-out. According to who though? We all know about power and how much we need to run things. It takes very little power to run a tweeter, yet tons of power to run a sub. The same principle applies to preouts. If a company rates their pre-out voltage at 1000hz, anyone can make power there. Yet if the voltage falls above 1000hz it will not have drastic consequences because tweeters need little power, with me so far? A sub though is a different story, as the frequency drops, so does the voltage, matter of fact like a rock in this case, down to about 1.5 volts. This is a well known fact and there are many posts about a weak sub preout from Alpine cd players. If they applied the voltage more even across the sound spectrum, performance would drastically improve, more noticeable in the bottom end. Very few companies will do this, they are more interested in hitting the price point and a flashy display rather than performance and sq. Post up some more questions if you want or have comments as well.</blockquote>

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