I have a 500x1 Rockford Fosgate Prime Class-D amp. Should I get the 2 Ohm or 4 Ohm version of this sub?

If you're getting one sub, get the one with dual 4-ohm voice coils. Wire them in parallel for a 2-ohm load on the amplifier for 500w to the one sub. If you're getting two subs, get the dual 2-ohm version. Wire the voice coils in series for 4 ohms per sub, then wire them in parallel to the amp for an end load on the amp of 2 ohms. This will give you 250w per sub.

Amp suggestion for running two of these subs?

I am running a Fosgate T1000-1bdCP. Its a 1000w watt @ 2 OHMs. and i have both P3D4 subs Wired to a 2 OHM final. YouTube "how to wire 2 Dual 4 OHM voice coils to a 2 OHM final" if your wiring up your self... i also recommend a Ported box with at least 2 cu. ft per chamber nor 2 cu. ft per speaker i have this set up in a full 1 inch MDF hand made Labrynth slot port box and it SLAAAAAM! i also Listen to Mostly RAP so.... it suites fine for BASS

Should i get 1 15 inch p3 or 2 12 inch. I will pair with rf prime 1200

I had 2 12's at one point, then upgraded to a solo 15, then had one 12" P3 in a smaller box. The solo 12 was almost as loud as the 15 and took up a lot less space.

I have 2 of these what type of ported subwoofer box should I buy for them?

I only have one P3, I bought a box with a vertical slot port on the left side of the box. A friend of mine has two kicker compRs, he has a dual slot ported box for his subs. His slot ports are on opposite ends of the face of the box. I would recommend that kind of box. The slot ports provide a lot of space for air travel. There are different setups with one big port in the middle. I personally would go with one like my buddy has where the ports are on opposite ends of the box. I think sound quality is be better like that instead of the one in the middle. Search on amazon for a dual slot ported box and you can see both types of boxes. I would also recommend wiring your subs as two ohm subs. Do this by taking some speaker wire +/- and linking the + to + and - to - connections on the speaker before putting the +/- connectors from the box. It doesn't matter after that where to put the + and - wires from the box to the speaker just make sure you always put + to+'s and - to -'s. Gives you more power. Good luck to you, make some noise!!!

Mounting Type	Flush Mount
Material	Aluminum
Model Name	P3D4-12
Speaker Type	Subwoofer
Special Feature	Bass Boost
Recommended Uses For Product	car
Compatible Devices	Desktop, Home Theater, Smartphone, Tablet, Television
Subwoofer Diameter	12 Inches
Unit Count	1.0 Count
Surround Sound Channel Configuration	1.0
Color	Black
Included Components	Subwoofer
Product Dimensions	14.5"D x 14.5"W x 10"H
Item Weight	11.18 Pounds
Impedance	4 Ohms
Is Waterproof	False
Warranty Type	Full
Number of Items	1
Control Method	Voice
Speaker Size	12 Inches
Power Source	Vehicle Electrical System
Woofer Diameter	12 Inches
Customer Package Type	Standard Packaging
Audio Driver Type	Dynamic Driver
Audio Driver Size	12 Inches
Subwoofer Connectivity Technology	Wired
Series Number	3
Specific Uses For Product	In-car audio systems
UPC	780687332761
Style	4-Ohm
Global Trade Identification Number	00780687332761
Manufacturer	Rockford Fosgate
Shape	Rectangular Prism
Set Name	P3D4-12
Item Weight	11.18 pounds
Item model number	P3D4-12
Is Discontinued By Manufacturer	No
Warranty	1 year parts and labor
Charging Time	250 Hours

P3D4-12 Punch P3 DVC 4-Ohm 12-Inch 600-Watt RMS 1200-Watt Peak Subwoofer

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