popping noise from audiobahn sub

The cone feels fine, however cant really feel it to well since its inverted. I have it wired in parrallel. Its a dvc 4 ohm audiobahn sub. Its running 2ohm mono right now into the bd1000 amp which will make the amp run 1000 watts rms, 2000 max. I know this is more than the sub can handle since its rated at 700 watts rms 1400 max. I keep the gain at safe levels. Ive tried it from barely up to almost all the way up. When i have the gain that high up i ease the volume up gently when i do that so i dont melt the voice coils lol. I have a slow charger that charges it, however this type of battery is made to go a long time before it needs charging. On the amperage thing now thats a big possibility that i never thought about. I do know the signal coming from the receiver is clean because I have another amp i use for sound speakers and they come out perfectly clean. I would use this amp for testing on the sub however its not nearly powerful enough. the most wattage i can get out of it is bridging it in 4 ohm mono which is only 280 watts rms. and also if you wondering why i havent did it at low volumes with this amp however one minor problem , the subwoofer is a 4ohm dvc which means each voice coil is 4 ohms, since i only have one of them kind of hard to get a 4 ohm mono load unless i build some device to do it which i really have never did nor do i know how to lol.

its inverted eh,,,,humm.....did you reverse the polarity on the wires??  when you invert a speaker, what noramlly would be the + terminal, becomes a - , so be sure to reverse your wires.  It sounds like that is all the problem is, because subs do make that sound when they are inverted and they arent wired properly.

ok lots of ideas but no solutions. First its got nothing to do with the fact that it might be inverter as alpine guy suggests. as long as the coils of the sub are in phase the phase at the amp is not relevant. increasing the gauge of the power wire although it is true that amp wants a minimum of 4 gauge is also not the problem . it is going to be one of 3 things . 1 the sub is damaged. 2. The battery is not providing enough current and is causing your amp to clip very even at lower volumes. (this is likely the case) or 3. your bax is too big. you said you were going to try a bigger box? do not... as the box gets bigger the power handling goes down as the box exerts less controll on the excurtion of the sub. try a smaller box. That amp you have is a sub killer . it  has huge current draw so i am not surprised that your sub is popping the way you are testing it.Steve@A.E.S

I agree with Stevolon, it seems hea has drawn the same conclusions as me.Top Secret, I can tell you but then my wife will kill me.

well i said nothign about trying a bigger box i just used 2 boxes i had laying around. I was doing that to see if one of them had any leaks in it. Also i know about using the cbft size for subs and i know what they are to. for this sub for sealed boxes it is .7-1.4 cubic feet. for ported it is 1.4cbft. anyways i think the sub is partially blown but first chance i get im going to try it on differnet subs. that will let me know for a fact weither its the amp or sub. I do appreciate everyones help and advice , and i am 99 percent sure the sub is about fubar as i like to say. but when i find out ill post it on here but like i said i believe its the sub. anyways once again thanks for all the suggestions and help.

What kind of audiobahn sub is it?1998 Volvo S70 T5 - It's Swedish isn't that weird?