Ok. I have a Memphis M3 rated at 400/800 watts. It is a DVC 2 ohm sub.
http://www.woofersetc.com/index.cfm?...roduct_ID=5248

The amp is a PRD 1000.1 amp here
http://www.woofersetc.com/index.cfm?...Product_ID=373

It is powered through 0 Gauge wiring to an Optima Red Top.

My question is... how do I wire this thing. Should I 1 ohm it or 4 ohm it. I have heard 19 million ways to do it. I want to not blow this sub, but want a lot of bass. please, gimmie exact instructions on how to wire this thing.

 

The sub is rated at 400 watts rms so wire the voice coils in series so it is a 4ohm load the amp will run 300 watts rms and will peak at 600 so you should not blow the woofer or damage the amp

 

The guy at Memphis said i could run 1 ohm. is he wrong?

 

Yes they say that amp is 1 ohm stable. What you want to do is wire the voice coils up in parallel. Negative to Negative and positive to positive. Since it is a 2 ohm DVC sub this will produce a 1 ohm load.

 

A 1 ohm load will make the amp run much hotter and harder. The system will likely make more distortion at 1 ohm also. The speaker will certainly take more stress. It will also be somewhat louder. In general it is not a good idea to stress systems to their limits. Component life will be shortened.

 

the last one lasted 6 hours.... i think it was bad tho

 

I don't recommend running that woofer at 1 ohm with that amplifier. You'd be giving 1000 watts RMS to a woofer whose thermal power handling is listed as 400 watts RMS. The woofer wouldn't last very long!
That woofer has a fairly high sensitivity, which means it is efficient. 300 watts RMS on an efficient 400 watt RMS woofer should play plenty loud.
You would be in much better shape if you bought a second woofer, wire the woofers' coils together in series, and then wire the woofers together parallel. The amp would see a 2 ohm load, which would give the woofers 600 watts RMS. Be careful with the gain setting of the amp and you'd have a pair of 12s that would jam for a long time.

 

/Agree. The effective wattage would be about right into a 2 OHM load with 2 of these. The amp would run cleaner and cooler also.

 

Just because it says 1000watts at 1 ohm doesn't mean it will always run 1000 watts. It is always better to over power a woofer than under power it. You can always adjust the gains on the amp. Distortion almost always kills speakers and not over pwoer.