Depends on your amp. If they are dual 4 and your amp is 1 ohm stable and you have 2 subs, wire red to red and then red to plus on the amp. If your amp isnt 1 ohm stable wire ch1 red to + on amp, ch1 black to ch2 red, then ch 2 black to - on amp. If this sounds like french to you, go to a stereo shop in your area and pay them to hook up your stuff. It will be a lot cheaper than buying a new amp and subs.
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OK. Sometimes manufacturers put two flat prongs to each of the positives and negatives of the voice coils. This allows for daisy chaining multiple subs to be easier. Here is how you want to wire your subs in the box.
From the positive post of the box to the positive posts of both voice coils (just choose one prong on each of them, you do not have to connect all 4 of them). So you will have 2 wires going from one post on the box to 2 posts on the sub. Got it. Not go from the negative post on the box, to both negative posts on the subs. Repeat this with the other sub. Now you can hook each channel of the amp to the box regularly pos of amp to pos of box and neg of amp to neg of box.
This set up is called parallel and will drop the ohms resistance of two 4 ohm voice coils to a 2 ohm load. You will get 2 ohms for each sub, thus connecting one sub to each channel. This will allow you to get the max power out of the amp or 150w RMS per your post. Hope this helps.
series is a straight line and parallel is is a big x. come into the connection pos and neg from there hook that to the pos and neg on one side of the dvc.on the speaker take the pos to the open neg and the neg to the open pos
Basic wiring dictates that with a speaker with 4 voice coils all at 4 ohms each is meant to be wired in parallel. This will put the load at a 1 ohm total load on the amplifier. Wiring in parallel is positive out from amp to pos. to pos. to pos. to pos.. And neg. out from amp to neg., to neg., to neg., to neg..
if u have two pos. and two neg. on the back just run a wire from one pos to the other pos and do the same with the neg just run the wire from the box to one of the pos and neg only on one side u have two wires runing to them
u should have two pos, an two neg. on the back of the sub run a wire from one pos to the other same with neg. now just run a pos an neg from the box to one side of the sub u should have one side with two wires runing to the pos. an neg. if u need more help let me know firstname.lastname@example.org
All depends on your amp. Is it 1 ohm stable or not? Parralell: positive (pos) on voice coil 1 (vc1) to Pos on vc2 and negative (neg) on vc1 to neg on vc2. Then speaker wire from amp to one vc only = 1ohm load. Series: Pos from amp to Pos on vc1. Neg of vc1 to Pos of vc2. Neg of vc2 to amp = 4 ohm load.