my kenwood 8105D has a 60A fuse.fuse ratings are based on amps... so P=IV.... amps x voltage = rms power
my kenwood 8105D has a 60A fuse.
at 2 ohms' date=' that's 60A x 120 volts = 7,200watts //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif
doesn't make any sense. Even if half of that wattage was turned into heat, that would still be 3,600 watts. The kenwood is rated 500wrms at 2ohms with 1,000 peak.
so.......//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif[/quote']where in the fuck are u getting 120 volts from:eyebrow:
my kenwood 8105D has a 60A fuse.
at 2 ohms' date=' that's 60A x 120 volts = 7,200watts //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif
doesn't make any sense. Even if half of that wattage was turned into heat, that would still be 3,600 watts. The kenwood is rated 500wrms at 2ohms with 1,000 peak.
so.......//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif[/quote']
SO much fail in this post.. Smh:crap:
First off you shouldn't be multiplying times 120 considering your car runs on 12 volt, not 120..
second of all, hate to burst your bubble but your kenwood amp doesn't do anywheres near its "rated" power.
Thir.. I give up
I plugged the numbers into a wattage calulator. lolwhere in the fuck are u getting 120 volts from:eyebrow:
Ya think?! //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gifI think I did it wrong. I think you use the car battery voltage and the amperage rating for the fuse.
Generally, yes. It's not an exact representation of power output by any stretch of the imagination.14.4V x 60A = 864watts
Let's say the kenwood is only 70% efficient. 864 - 30% = 604.8watts
This might mean that this amp will take about 605wrms before it catches fire???
I think???//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif
This. Not to mention, you have no idea what the efficiency is, if the manufacturer put the correct size fuses, if it does rated, etc. There's a whole list of reasons why this method is inaccurate, but it will typically get you in a ballpark. The same ballpark you would be in if you just went off of manufacturer's ratings.This calculation is only an estimate of what the amplifier is capable of putting out. No, it does not mean that at the watts you come up with the amp will catch fire. Fuses blow slowly, and they will handle more than their rating says for brief moments. Some fuses blow more slowly than others. With music playing the amp will rarely be at maximum output unless you run it wide open all the time.
If it did, then ill zip my lip but I doubt they do.04murdalanche commented that your amp is no where near capable of rated power -- if it were the 8104 I wouldn't argue, but it APPEARS the 9105/8105's are improvements on the old amps, and I wouldn't be surprised if it actually DOES do rated power.
Truuuuuuuuuget an oscope/dmm/clamp meter /thread