I have a Rockford Fostage 'P312D4' i.e. 12" dual voice coil 500 watt RMS 4 ohms. And i have a Planet Audio RX5.600 which supplies 300 watt RMS to the sub channel at 2 ohms. my question is how should i wire it so that i get the most boom out of it. Any help will be much appreciated thanks.

 

If you have two 4 ohm voice coils, just connect both +'s to the single + on the amp's sub output, then connect both -'s to the single - on the amp's sub output.

(each voice coil should have its own + and -, so on the sub you should have two different +'s and two different -'s)

Then you will have both coils connected and the amp will have its 2 ohm load.

 

Good information here

http://www.the12volt.com/caraudio/wo...igurations.asp

 

^^ correct. both +'s connected together on sub then to amp and both -'s connected on sub then to amp = 2ohm

 

Do people not do their own research prior to spending money?

 

i happened to have both lying around and decided to do a setup , thank you very much.

 

Hope this doesn't count for thread jacking. I was debating getting a fosgate P3D210 400wrms/800wmax and hooking it up to my elemental designs nine.2x which puts out 600wrms @ 4 ohm. A friend of mine told me that I didn't have enough power for the P3s take A LOT more power than there rated. piyushh, does your P3 sound good or does it sound like it is lacking power?

 

I just built the box. tomorrow i will find out what it sounds like. i'll report back as soon as i hook it up.

 

So you never spent money on them and you already knew how to wire multiple voice coils, correct?

 

Sealed/ported? What size? Everyone is telling me I should go ported or get a bigger sealed at least. I think the output would be more than enough considering this is my first system and the Z is a fairly small car.

 

I built a sealed box, around 1.6 cu ft. the manual for the sub asks for .75 cu ft. i will see how it sounds if i don't like it i can always make it smaller. i personally think sealed enclosures sound better.

 

i spent money on it in 2005 i had a different amp back then which was 4 ohm and got shorted 1 day. the 2nd amp i had was 2 ohms which I'm setting up now with the same woofer.