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if i bought a sub thats DVC 4ohm, could i run it at 2ohm safely? the idea is to use a 2ohm amp till i can afford a 4ohm

 
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you've got it backwards
its not the sub that will blow, its the amp...
a 4 ohm dvc sub will only allow you to run at 2 or 8 ohms

your amp has to be 2 ohm mono stable

 
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ok, here's the type of system i want. alpine type s 12" dvc subs. what alpine amp would be ideal for this? thanx in advance

 
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how many subs

 
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if you want to run the subs at 2ohm get a amp that 2 ohm stable

 
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ok, so a subwoofer doesnt "run" at a load, it IS a load!

think about electricity as water, and wires as piping to flow water through.

so you got yrou subwoofer, with 2 sets of piping, 2 inlets and 2 outlets (dvc, 2 +, 2 -)

the "load" is the time it takes to get water though the pipes. so you connect them end on end (series) and it takes twice as long to get the water through, right? thus twice the load. use a y adapter so water flows through both at the same time, and if flows twice as fast as one tube, (parrallel).

so a subwoofer doesnt "run" at a load, it is inherrent in the way it physically exists, you can choose the way it runs, you cna only hook up all teh tubes and let electricity flow liek water.

its yrou AMP that you have to consider! the amplifier imagine to be like a dam, more or less INFINITE watter at yoru disposal. obviously, if you had 2 short pipes, you dhave 4 times the water rate flow as with one twice as long pipe!

but what happens now if we stick like 30 pipes on there? going back so we dont lose track of our goar, 30 pipes would mean 15 DVC subwoofers wired in parrallel, thats a .133333 load. your amp will see that .1333 load and respond, by feeding those woofers all teh current they desire! but in retrospect, can you imagien the pressure that pouts on teh dam to provide that water flow? failure of the damn is inevitable.

so you cant give a subwoofer a load at all! the subwoofer has an "impedance" a load that it presents to the amplifer. the amplifier response to this and provides teh current that the subwoofers demand. and if the subwoofers IMPEDANCE (not current requirements) is too low, the amplifier tries to send too much current though itself and fails.

 
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so what is the end all? if you have a single 4 ohm dvc subwoofer, you can wire it in parrallel for a 2 ohm load. with a 2 ohm impedance, you need an amplifier that can handle such a small load! if your amplifier is 1 ohm stable, you are fine with your 2 ohm subwoofer!

but if you amplifier can only handle a 4 ohm load minimum, and you present a 2 ohm load with yrou subwoofer, that amp will try to draw twice the current it is rated to handle. and thats when amplfiers start to get unhappy [IMG]i/expressions/face-icon-small-smile.gif[/IMG]