what is the difference in a dual voice coil sub and a regular sub? can only certain amps be used with dual voice coil subs

 

a dual voice coil has 2 voice coils and a single voice coil has one... simple?

okay... think of a DVC as a 2 speakers. it has 2 sets of "speaker" connections.

so if you have a DVC with 2 ohm for each one, you can connect them in series and present a 4 ohm load to the amp.

or connect them in parallel and the amp will a 1 ohm load.

see, it's that simple...

 

oh, as for amp-wise.

it depends.

you have to look at what the amp ratings are. these days, in order to make their amps look "powerful" manufacturers a printing the 2 ohm load ratings. back in the old days, everyone listed 4 ohm. but 2 ohm ratings are usually twice as much as a 4 ohm rating.

so for amp A: at 4 ohms, it might give out 100 watts per channel.

but at 2 ohms, it might be listed at 200 watts per channel!

but you say... hey, if 2 ohms are twice as much, how come they all dont do that.

well, as your grandfather use to tell you, but you refused to listen, "there aint no such thing as a free lunch..."

heck, why stop at 2 ohms. why not 1 ohm and quadriple the rating? well there's a thing called OHMS LAW...

it goes like this: V = I x R, where V is voltage, I is current and R is resistance.

voltage is constant, so lets make it 12 volts. so current and resistance changes. ohms is resistance. so current is the thing we are worried about.

using a little alzebra we learned in 5th grade, we find that I=V/R.

and we know that watts divided by volts gives up amperage. for example, you are running 4 100 watt spotlights. 400/12 = 33.3 amps you are using to power them.

so back to amplifiers. same thing. 200 watts of power is using 16.6 amps. now, you are using 400 watts. so now you are putting an extra load onto your charging system.

free lunch? you make the call...