I called kicker today and the guy told me the 8 inch kicker substation 80 were 150RMS, he recommended the KICKER DX125.2 for an amp, and down the line if i wanted to replace the speakers he recommended the COMP 8 series sub.

For now i think i am going to buy an amp, and use the one box i have until i gather more funds to replace the speakers and run both sub boxes.

You recomend the JL, kicker recommeds the dx125.2 and cruthcfield recomends boston acoustics

If i did the JL Audio Slash v2 Series 250/1v2 its a mono block, ? does that still allow me to run 2 sub boxes in the future ad only run one for now?

Also if my speakers are 150RMS per each i would want an amp in the 300- 450 range rms right?

What do you think of this one? you get a free wiring harness and a 12 inch sub :P

Kicker 10DX500.1 Mono subwoofer amplifier — 500 watts RMS x 1 at 1 ohm at Crutchfield.com

heres a comparison list of the 3 speaker
Compare: Mono Amplifiers at Crutchfield.com

 

ok am i thinking correctly here with this thought...

if i have 400 w @ 4 ohms and 200 watts at 2 ohms, at 2 ohms the amp is meeting less electrical resistance and able to run easier? So optimally you would want an amp with the highest wattage at the lowest possible ohm say 1 ohm?

 

if that thinking is correct how does one take a sub with a 4 ohm speaker and make it run at say 2 or 1 ohm?

 

there is a link in keep hope alives sig to the 12volt.com. you really want to read that.

but basically ohms are impedence or the resistance. your voice coil on your sub is a resistor. a lower impedance (or ohm) will allow the amp to run more wattage at a lower voltage output. (basically allowing the amp to push more power). the formula for converting voltage to wattage is the square root of the wattage * the resistance.

at a lower impedance you can more easily push more power. not all amps are rated to the same impedance. it is important not to run an amp to low or you WILL burn it up.

at a higher impedance the amp has more of a dampening factor (or control over the sub) this allows for more range and better sound quality.

in order to change the impedance that is put on the amp you need multiple resistors. (the 12volt covers all of this, hence why it is a good read). if you have a 4 ohm svc sub the impedance is 4 ohm. it can not be changed. if you have a 4 ohm dvc you can wire it parrellel to 2 ohms or series to 8 ohms. this is because you have two resistors. if you add another sub it will also change the impedance. two 4 ohm svc subs will have a final impedance of 2 ohms. double the reistors and cut the impedance in half. and so on in this manner. there are quiet a few formulas to consider when wiring and tuning your car audio. i highly suggest reading that article.

http://www.the12volt.com/ohm/ohmslaw.asp#pie

 

That kicker amp is a fine choice.

Neo is right. Adding resistors to lower the impedance load is pointless because it does not change how much power the sub gets, the resistors get the extra power.

Kicker will always recommend Kicker. Their amps are fine.

The JL 250/1 v2 is not a comparable amo to that Kicker, because the JL gives full rated power at any impedance, hence the extra cost. A JL 250/1 or Alpine PDX can eliminate the concern about less power at 4 ohms.

 

and i just saw your question about the amp being one channel. a mono block amp means it only has one channel. you can run as many things as you want, as long as you dont go below the ohm rating, on that one channel. it just means that it is only putting out one signal. so if you were to wire two subs they would play the same frequency range and take equal power each. this would work fine as long as you were within your impedance restrictions and the total signal was enough power to run the two subs required power added together. (you can always underpower subs but for sake of explination we will act as if you cant). so two 4 ohm subs that require 200 rms each would need an amp that is 2 ohm stable and puts out 400 watts rms at 2 ohms. if tried to run a speaker and a sub it would not work because both would get the same signal and the same amount of power. we will say the speaker and the sub are both 4 ohm. the sub requires 200rms and the speaker requires 50 rms. your out put frequencies are set between 35 htz and 65 htz. the sub is going to try to play these frequencies and so is the speaker. now our impedance would be 2 ohms. we will say again that our amp puts out 400 watts rms at 2 ohms. the sub will get 200 of that and the speaker will get 200 of that. the sub would be fine under these conditions but your speaker would probably either never respond because of the frequencies or be blown in under 5 min.

think of channels on amps as individual amps. an amp that puts out 100 watts x4 channels would be like having 4 100 watt amps. they are just all in the same case.

 

Yep, that is correct

 

Ok I feel horrible, I have tortured you guys with all my what ifs,I have a friend who put inane pioneer supermarket head.unit and.dropped in one of these sound ordanance powered with amp combos and its thump well enough that I was.impressed and ready to buy it. Only concern I have is that he has an after market headunit and I would be using a factory stereo I afraid.that it will sound horrible.compared to his, what do you guys think do you think it will sound similar or not he same

 

Sound Ordnance™ B-8P 80-watt powered bandpass subwoofer at Crutchfield.com


That is the sub. Other thing is I like he enclosed speaker cause I know an exposed woofers will get a baseball bat, or a stroller threw it.in trunk by kids plus it keeps car intact which for now pleases the wife until I get her own car and take over he accord for.myself. lol

 

bandpass is going to limit your frequency range. if you are concerned about getting damage seal it to your cab. bandpass boxes are definately designed for spl. also what kind of vehicle did he put it in? if you put it in an accord and close the trunk it will not be nearly as loud as if he has it in an extended cab pickup. also as far as volume goes the aftermarket or stock headunit wont make a huge difference. that is the purpose of the amp is to power the sub. all the amp needs from the HU is a signal.

and that confuses me. putting this in the car is not going to be any different as far as modifying the car as building a box and putting any other sub in there.