Ok this is so confusing to me i am confusing myself. So plz hear me out.

First of all I am using 2 of these sub

http://manuals.harman.com/JBL/CAR/Boxes%20...12GTi_rev_f.pdf

Together wired in parallel they make a 1.5 ohm load which what i been told on here thats really 2ohms or a 2ohm amp for max power would be best suited.

(parallel/parallel) = 1.5 ohm load

Voice coils wired in parallel, speakers wired in parallel

Right now I have a sundown 1500d which is 800rms at 2 ohms.

I want to buy another 1500d and strap it.

My confusion is right here since the sundown does 1500rms at 1 ohm and i decided to strap it what will my final ohm load be.

I am hoping that if i strap this amp then that i will have each amp at a 1 ohm load to make 2 ohms total meaning that i will be going from 800rms to 3000 rms using both amps or will i just have 1600 rms? Regardless i am told these subs can handle brutal power there rated at 700rms but can handle 1200 rms or more.

You will have "0.75" ohms per amp, effectively 1 ohm per amp.

You will have 3000 watts total rated power.

thx for the help this will basically quadruple my power then by adding another amp and strapping.

actually, it would be closer to 3x the power.. as a single 1500D would be making closer to or above 1000Wrms at 1.5ohms..

forget what "they"say imo, the manufacturer rates their sub at a certain power level for a reason, so take caution when exceeding it.. also, note that 2 1500Ds is going to place additional stress on your electrical system, so make the necessary upgrades if needed..

i'm sure you will enjoy the extra power..

actually, it would be closer to 3x the power.. as a single 1500D would be making closer to or above 1000Wrms at 1.5ohms..

forget what "they"say imo, the manufacturer rates their sub at a certain power level for a reason, so take caution when exceeding it.. also, note that 2 1500Ds is going to place additional stress on your electrical system, so make the necessary upgrades if needed..

i'm sure you will enjoy the extra power..

I am stating to you that i was told that a 1.5 ohm load is really 2 ohm and not 1.5 its because i was told that it will never go below that but always above that. I may not be the best to explain this hopefully someone else will read this and explain it better on here to you.

resistance is when your sub is standing still.. (not moving)

impedance is when your sub is in use, i.e. while the coil is moving.. impedance is varying resistance..

your subs have an impedance of 6 ohms per coil.. that means that while in use, the resistance of the coil, on average, will be 6 ohms..

the impedance of a sub can be affected by the enclosure it's in.. (volume & tuning frequency affects impedance)

generally, the impedance of your sub will be close to its resistance (i.e. Re from the spec sheet) at the tuning frequency of the box, and higher as you move away from the tuning frequency..

so your subs should have an impedance of 1.5ohms.. but things like heat and the enclosure will raise that value.. hence the 2ohm recommendation..

hope that help..