so ive got a sub that has 2 sets of pos/neg terminals and so does my amp. im wanting to bridge the amp but how would i connect it to the sub? should i bridge it like the amp? (leave the the two others on oposite sides empty) or do that thing where its bridged and then u take a wire and connect the two empty terminals together? or connect just to one side of the pos/neg terminals and leave the 2nd set empty?

 

any help? is this like a dumb question? sounds like i should know this, but i want to make shure im doin this right i dont want to have my sub go out early cuz it wasnt hooked up the best way

 

you're about to have a PM.

 

First, lemme say that All of this depends on what kind of sub and amp you have
For this, I'm going to assume that you have a 2channel Amp and your sub is a DualVoiceCoil with 4ohms at each coil.
On your sub, connect both Positives to each other; then connect the negative terminals together. Use the positive from 1 coil and the negative from the OTHER coil.
Now, connect your positive to the positive of One channel on your Amp, then connect your negative to the negative terminal of the OTHER channel.

 

What ohms are the voice coils, and you have a 2 channel amp?

It all depends on what your looking to do also is it just 1 sub or 2 subs. Then I can help you

 

You need to figure out what kind of power your amp will put out in bridged mode (watts@?ohms) and how many ohms each of your voice coils are on the sub and what wattage they are rated at. Look at some you tube videos on bridging amps and subwoofers and series wiring vs. parallel wiring.

In short if your sub is capable of handling a high power load from your amp (ex. each voice coil is 2ohm and can handle 500 each voice coil) and your two channel amp puts out 300x2 at 4 ohms but bridged it might put out 600x1 at 4ohms(600x2 at 2ohms) and maybe 1200x1 at 2 ohms. Making any sense? The lower the load (ohms) the more power your amp will produce(watts)

If this is your situation you would be advised to run a channel to each voice coil giving them 600 watts each. It's actually better to have more power then less and then you can scale back the sensitivity on the amp instead of trying to push a smaller amp really hard.

Like I said go watch some you tube videos and if you have any questions feel free to pm me. I enjoy this kind of thing.

Lastly make sure if you are going to try to push a load of one ohm(not advised) make sure your amp is one ohm stable!!

Edit: Wanted to add http://www.termpro.com/articles/spkrz.html

Gives you the basic idea

 

Sometimes its best to take it to a shop so you don't blow anything.

 

It's not THAT hard,,,that's what the internets are for!