Quote:
Originally Posted by winnre
Don't suppose you can be a tad more specific for those of us who like music but aren't sound techs?
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A bit off topic but related since we are talking about the unit Nissan put in their audio system. Audio section has more info about how "weak" the stock nav unit is. When you set up and tune a high grade audio system, you need to set your h/u and the gains in your processors and amps to reach their maximum clean volume output just before clipping (not max power). Typical setting is 75% of max volume of your h/u with all gains in your processors and amps set to flat. Then begin to increase your gains in your amps first just before clipping and backing off a tad. Do the same with your other amps, balance it off between your sub, midbass, mid, and high amps and do the same with your processors. This is called level matching and maximizes the efficiency of every component in the chain. The head unit has to produce clean signals for clean sound. 2 volt signals are basic and 4 volt signals provide clean output down the chain. Processors and amps simply reproduce and magnify the signal. This is why 4v minimum outputs on h/u are important for good audio reproduction especially in car audio where noise easily comes in. Excellent signals from your your h/u give you more headroom in car audio. Something the stock system cannot provide when compared to aftermarket units.