Navigation Ipod Bluetooth
2009
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Choosing the correct headunit for my car audio system?
When is a headunit considered too strong for speakers? Is it when the watts per a channel exceed the peak power or RMS continuous wattage for the speakers? If I buy a set of speakers and it says 100 watts RMS continuous / 200 watts peak power is it reffering to each speaker or to the set saying that each speaker is capable of half of the total including whatever tweeters are connected/bought with that set?
Features I want built into the headunit (most important to least important);
iPod Audio / Video (must)
Bluetooth (must)
Audio / Video connections for external monitors (not a must but would defiantly like to have it for my kid)
Navigation (not a must)
The only power spec you should be concerned with matching is RMS. For any given speaker to perform properly you will need to have at least half the RMS rating else you will have premature distortion which kills speakers faster than over powering,
Depending on the brand most of the top tier companies will rate the speaker per channel including woofer & tweeter. So if the speaker says it's 100 RMS watts per channel then you should drive it with no less than 50 RMS watts per channel. How much the tweeter sees will not be a concern since most speakers uses some sort of attenuation circuit. They are usually matched tonally, but may have a switch to adjust the tweeter's output (mostly on component sets) . Some companies will rate the total RMS power for the set which can be confusing, but a quick check into the actual specs should clear that up. If it doesn't give them then don't buy it. That has always been my motto!
Check out this link to see what will exactly fit your car and then look for the head unit options you want:
http://www.crutchfield.com/app/car/carselector.aspx?lp=%2fapp%2fCar%2fMyCar.aspx
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