Yea whilst alot of what 727kid is correct, I dont agree with the way he shared his thoughts.

 

you should have gone with the dual 2 ohm subs and get a mono with 1000 RMS (alpine mrd-1000), but in your case you got the 4 ohm versions, so you should find a 1 ohm stable mono amp thats rated to 1000 RMS. I have a 12" Type-R and a 600 RMS alpine mrd-605 amp, and it sounds great.

 

.... That doesnt make a lick of sence. Every speaker is 4 ohms. Even yours. But it is dual voice coil, meaning that it hastwo voice coils at 4 ohms each. If we refer to the current division principle, 1/Rt = 1/R1 + 1/R2, 1/Rt = 1/4 + 1/4, 1/Rt = 2/4, Rt/1 = 4/2, Rt = 2. Total resistance is 2 ohms. So your one speaker produces 2 ohms resistance, same as what his type R dual voice coils do. You only need a 2 ohm amp because you only have one sub. Adding a second sub like yours in parrallel to your current one will make the resistance 1 ohm.
Umm one thing that did cross my mind is wiring the dual voice coils in series, and the amps in parallel, creating a total of 4 ohm resistance. So you would only need a 4 ohm stable at that produces 1000W RMS at 4 ohms. This may be easier to find that a 1 ohm stable amp but it may still prove a challange because even the before mentioned MRD-M1005 is only 1000W RMS at 2 ohms at 14.4v. So it will fall pittyfully short of the required 1000 WattsRMS at 4 ohm at 12v required.
BTW, the MRD-M605 is 600W RMS at 2 ohms for 14.4v, so its only about 400W RMS in a car.

 

Every speaker is 4ohms?

So my dual 1s are 4ohms? And cabinent speakers that are single 8 are really 4 too?

 

the 727kid....Don't listen toCHAOScause he's just a little ***** that thinks he knows everything, but in fact he doesn't.

AND CHAOS....by the way he got 2 subs. Anyways, i was saying he should have gotten a mrd-1000 if he had gotten 2 2ohm DVC subs, wich would have given him a total 2 ohm load. and the mrd-605 produces 600 watts RMS at 14.4volts, wich my car running is pretty close to that. also you said to get an amp that can handle 1000 watts at 4 ohms, wich would be more expensive than finding a mono amp that can handle 1 ohm. Don't come in here with your formulas (wich I know cause i'm an electrician and car electronics installer) and think your smarter than everybody. and by the way not all speakers are 4ohms......

 

all you need is a mono block that does a 1000rms at 1ohm... if you give us a budget we can help you out with that. using a class d mono block is much more efficient to use on your electrical system for your subs... i really hope you amp your speakers too cuz you prolly wont hear a lot with just bass...

 

Subs are for ricers and Nags with 20 fos.

 

You didnt say DVC subs in your first post. Meaning I took it as a SVC 2 ohm or a DVC wired with itself in parallel to make a 2 ohm sub. Both of which do not give 2 ohms total load. If thats what you mean, than be clear about it. And I never said a 1000W 4 ohm amp was cheaper, just that it might be easier to find than a 1 ohm stable amp. Infact, I even sugested a 1 ohm D class monoblock 1000WRMS in the first place when the kidwas talkingsome crap about 4 channel amps. And I dont think Im smarter than everybody, but clearly I am smarterthan someone who is asking for help on a topic so I do my best toinform them of everything they might want to know. Id muchrather that someone knowswhy they need a 1 ohm 1000W monoblock and not just get told to get one cause if he just did what he was told, he would have bridged a 4 channel or something rediculous by now. And I will agree with you on the speakers, I should have made myself more clear. No not every speaker is 4 ohms, but in car audio, generally speaking,most speakers are infact 4 ohms. And alpines site states that the MRD-605 is only 400W at 12v, andconsidering we are using a 12v power source, I thinkit is safe to say that your amp isn't putting out a stright 600W.

Any are you refering to me as the little ***** that doesnt know anything or the727kid?

 

when i was talking about the dual 2 ohm version, i was talking about the dual 2 ohm each coil, wich in fact will give him 1 ohm or 4 ohms each sub, wich then can be brought to 2ohms. but he got the dual 4ohm coils wich can be wired to 2 ohms or 8 ohms each sub, wich can then be brought to 4 ohms. and yes i was talking to you cause i hate people that try to correct me when I right, if you have an opinion, sure go ahead, but don't be writting comments like ".... That doesnt make a lick of sence" at my posts. And yes a mono amp is better on your electrical system.

 

Sorry for the confusion. Try and be more specific when you are talking about these kinds of things because you as a sparky would know that things can get very messy, very quickly when there is one little error.