Question about 14.4 V...

[DeadOnArrival 10+ year member]

Ok, I did a search on Caps and found all kinds of different stories on how they are helpful or not. I was wondering if somebody can give me some info on this. I have the Alpine 1507 amp and they say the stats at 14.4V is this:

RMS Power (at 14.4V,20Hz-20kHz)

Bridged 4 ohms : 900W x 1 (0.3% THD)

Per channel into 2 ohms : 450W x 2 (0.3% THD)

Per channel into 4 ohms : 225W x 2 (0.08% THD)

But at 12V it is this:

RMS Power (at 12V,20Hz-20kHz)

Bridged 4 ohms : 600W x 1 (0.3% THD)

Per channel into 2 ohms : 300W x 2 (0.3% THD)

Per channel into 4 ohms : 150W x 2 (0.08% THD)

Of course I want to get the most power out of my amp, but how can I do this? I read that you have to get a better alt to provide more power to the battery and get a better battery to help with the dimming of lights. I have a brand New '03 Explorer and I want to hook up my RF Sub in it. The sub is the HX2 RFR3112 rated at 1000RMS, 2000 Max. But if I am reading the above stats right, I am only pushing around 600W into the sub.

If I put a higher output alt in my Explorer, do I have to worry about the electrical system getting more power then it needs? I want to have the 14.4V to make sure that I am hitting the 900Wx1 RMS, so what is the best way to go about doing this? Sorry if this is long and boring, but I am getting the next week off and I will have plenty of time to work on installing it and I want to do it right the first time... Thanks

DoA®

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[hemos 10+ year member]

To make this a short story... I'll try to explain it to you really fast... You have the alt in your car giving around that 14.4v to your electrical system. When the alt cannot give enough power for all your equipment or when the car is turned off your battery only gives around 12v. So if you have a good electrical system and you keep your car running you will always get around that 14.4v

 

[DeadOnArrival 10+ year member]

So I should be running 14.4 already? Wouldn't I notice a difference in the Sub if I was putting 900 instead of 600 watts? Its a good speaker but it just doesnt seem to be hitting as hard as I thought it would with that amp...

 

[sleepr 10+ year member]

I noticed on my system when it first starts I was getting about 14.6 to the amps. After awhile it would drop to no less then 13.8.

 

[n2audio 5,000+ posts]

Actually a 300w increase from 600 to 900 would theoretically yield a 1.5dB gain, which is not a big difference at all. And when you consider that the amp will probably never be at 100% output playing music that audible difference would be even less evident.

Plus, as hemos mentioned, if you have a healthy batt. and sufficient alt you are already around 14v anyway.