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Importance of Amp Kit/Amp question

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Old 05-13-2012, 11:37 PM
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Default Importance of Amp Kit/Amp question

I have installed Infinity Kappa 50.9cs and Infinity Kappa 682.9cf in my truck. The cs can handle up to 85, while the cf can handle up to 100rms. I have boiled down between these two amps: The Rockford Fosgate P400-4 and the Infinity Reference 475A. I am down to these: http://www.crutchfield.com/App/Produ...O804E&g=347050

All push out 75x4, except last is 80x4. But I see the rockford has a bass boost, which would y'all recommend? Other recommendations welcomed.

Other question: How important is the amp wiring kit? I cannot remember the kit best buy installed last time, but it was not too expensive. Which would be recommended? I figure if I'm spending money for them to install an amp, might as well get it done right the first time. Thanks!
Old 05-13-2012, 11:52 PM
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I don't see the P400 in that comparison? Just see the prime version, which is the lower grade version of the P400.

Originally Posted by kevint1022
I have installed Infinity Kappa 50.9cs and Infinity Kappa 682.9cf in my truck. The cs can handle up to 85, while the cf can handle up to 100rms. I have boiled down between these two amps: The Rockford Fosgate P400-4 and the Infinity Reference 475A. I am down to these: http://www.crutchfield.com/App/Produ...O804E&g=347050

All push out 75x4, except last is 80x4. But I see the rockford has a bass boost, which would y'all recommend? Other recommendations welcomed.

Other question: How important is the amp wiring kit? I cannot remember the kit best buy installed last time, but it was not too expensive. Which would be recommended? I figure if I'm spending money for them to install an amp, might as well get it done right the first time. Thanks!
Old 05-13-2012, 11:56 PM
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Originally Posted by ibd2328
I don't see the P400 in that comparison? Just see the prime version, which is the lower grade version of the P400.
Sorry about that. http://www.crutchfield.com/p_575P400...400-4&skipvs=T

I previously owned one of these and liked how much bass it the speakers gave off with it.. not sure how much the bass boost helped? I'm just wondering if it is powerful enough or should I go with one of the others. I saw where it 50x4 rms power output and 100x4 at 2 ohms. Which one is used to power speakers?
Old 05-14-2012, 12:08 AM
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Your speakers should have their impedance (rated in ohms) on the back. If not, search your speakers on crutchfield and they will tell you whether they are 2 or 4ohm.

Honestly, to get the best bang for the buck. I would look at this one. Its the top of the line Rockford Power Series.
http://outlet.crutchfield.com/p_675F...0-4.html?cc=01
Old 05-14-2012, 12:16 AM
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Originally Posted by ibd2328
Your speakers should have their impedance (rated in ohms) on the back. If not, search your speakers on crutchfield and they will tell you whether they are 2 or 4ohm.

Honestly, to get the best bang for the buck. I would look at this one. Its the top of the line Rockford Power Series.
http://outlet.crutchfield.com/p_675F...0-4.html?cc=01
Both say this on Crutchfield: "True Four Ohm Impedance technology: speaker's 2-ohm impedance combines with speaker wire impedance for a 4-ohm load."
So what exactly does that mean? Do I have to buy certain wires or something?
Old 05-14-2012, 12:18 AM
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Originally Posted by kevint1022
Both say this on Crutchfield: "True Four Ohm Impedance technology: speaker's 2-ohm impedance combines with speaker wire impedance for a 4-ohm load."
So what exactly does that mean? Do I have to buy certain wires or something?
Post a link to the speakers you have and I will check it out for you!
Old 05-14-2012, 12:23 AM
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Originally Posted by ibd2328
Post a link to the speakers you have and I will check it out for you!
Answered that same question earlier...

https://www.f150forum.com/f30/door-s...2/#post1708429
Old 05-14-2012, 12:29 AM
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Originally Posted by JoeBoost
Answered that same question earlier...

https://www.f150forum.com/f30/door-s...2/#post1708429
Thats joe, I was a little to lazy to look them up myself.
Old 05-14-2012, 07:36 AM
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Originally Posted by ibd2328
Thats joe, I was a little to lazy to look them up myself.
So 18-22 gauge wires. But which is better?
Old 05-14-2012, 09:54 AM
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Originally Posted by kevint1022
So 18-22 gauge wires. But which is better?

Min. of 18. 16 is better.


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