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Help.....2 ohm vs 4 ohm
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<blockquote data-quote="Savant" data-source="post: 189248" data-attributes="member: 546108"><p>I don't really know enough about those subs or that amp to be of direct help.. but..</p><p></p><p>the resistence of the sub has nothing to do with the amp (perse').. That is, the 2 ohm sub is more efficient than the 4 ohm sub (has less resistence).. The power rating for them has nothing to do with their resistence... If the 2 ohm is rated for X watts, and so is the 4 ohm sub, the 2 ohm sub can handle the same amount of power as the 4 ohm sub..</p><p></p><p>Where the possible issue comes in is at the amp.. Can the amp run at 2 ohm stable? if not, then the 2 ohm sub would hurt the amp (you might be able to get away with running it at lower power, setting the gains lower to avoid over-driving the amp, but I don't know enough about running an amp at lower resistence than it's rated for.. you could well burn it up.. in any event, it's not really a good idea).. If the amp is 2 ohm stable, then you can safely run the sub.. Normally, the lower the resistence the subs have, the more total power you can get from the same amp..</p><p></p><p>Example:</p><p></p><p>My amp.. 300 rms x 2 at 4 ohm</p><p></p><p>.................600 rms x 1 at 4 ohm</p><p></p><p>.................500 rms x 2 at 2 ohm</p><p></p><p>notice how at 2 ohm I get more per channel than at 4 ohm? the general rule of thumb is 1/2 the resistence and double the power.. up to the point that your amp can handle it.. my amp is NOT 1 ohm stable.. some are..</p><p></p><p>which actually brings the other question (like I said, I don't know those subs).. are the subs single or double voice coil? If they are single I'm thinking you should be ok (not knowing the amp though).. if it's dual, you would be at either 1 or 4 ohm, and the amp might not like 1 ohm.. at 4 ohm (presuming your other sub was dual as well, you would be at either 2 or 8 ohm, prolly running at 2) you would only get about 1/2 the power from the amp as you did before..</p><p></p><p>sooooooooo.... it all depends on the number of coils and the amp //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif You can run that sub on that amp.. will it have enough power to it? I don't know.. will you burn up the amp? I don't know.. Hopefully between my and SoundsUnlimited's post, you have the info you need //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p></blockquote><p></p>
[QUOTE="Savant, post: 189248, member: 546108"] I don't really know enough about those subs or that amp to be of direct help.. but.. the resistence of the sub has nothing to do with the amp (perse').. That is, the 2 ohm sub is more efficient than the 4 ohm sub (has less resistence).. The power rating for them has nothing to do with their resistence... If the 2 ohm is rated for X watts, and so is the 4 ohm sub, the 2 ohm sub can handle the same amount of power as the 4 ohm sub.. Where the possible issue comes in is at the amp.. Can the amp run at 2 ohm stable? if not, then the 2 ohm sub would hurt the amp (you might be able to get away with running it at lower power, setting the gains lower to avoid over-driving the amp, but I don't know enough about running an amp at lower resistence than it's rated for.. you could well burn it up.. in any event, it's not really a good idea).. If the amp is 2 ohm stable, then you can safely run the sub.. Normally, the lower the resistence the subs have, the more total power you can get from the same amp.. Example: My amp.. 300 rms x 2 at 4 ohm .................600 rms x 1 at 4 ohm .................500 rms x 2 at 2 ohm notice how at 2 ohm I get more per channel than at 4 ohm? the general rule of thumb is 1/2 the resistence and double the power.. up to the point that your amp can handle it.. my amp is NOT 1 ohm stable.. some are.. which actually brings the other question (like I said, I don't know those subs).. are the subs single or double voice coil? If they are single I'm thinking you should be ok (not knowing the amp though).. if it's dual, you would be at either 1 or 4 ohm, and the amp might not like 1 ohm.. at 4 ohm (presuming your other sub was dual as well, you would be at either 2 or 8 ohm, prolly running at 2) you would only get about 1/2 the power from the amp as you did before.. sooooooooo.... it all depends on the number of coils and the amp [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] You can run that sub on that amp.. will it have enough power to it? I don't know.. will you burn up the amp? I don't know.. Hopefully between my and SoundsUnlimited's post, you have the info you need [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [/QUOTE]
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