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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.
INPUT: Yellow (left front), violet (left neg), green (left rear), Blue (right rear), Brown (right neg), Gray (right front)
OUTPUT: Front Left pos (green/red) neg (green), Front Right pos (gray/red) neg (gray), Left Rear neg (brown) pos (brown/red), Right Rear neg (white) pos (white/red) email@example.com
The six 1/2 speakers are your woofers,connect the positive and negative wires from the speaker to the 2 connections labeled on the crossover as W(woofer)+ pos and W(woofer) -- neg,hook the tweeters to the crossover connections labeled T(tweeter)+ pos and T(tweeter) -- neg,then hookup the 2 remaining connections labeled Amp to your amplifier,amp must be 2 or 4 channel stereo capable and give out enough power to properly drive the speakers so they achieve optimal performance.
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 you have a DVC 4ohm speaker, and you are using both voice coils, the amp is seeing a 2ohm load.
If you bridge the amp, you CAN run both subs as long as the amp is Two Ohms Stable.
Wire each subs voice coils in parallel.(Positive to positve, neg to neg.) (2ohms) each.
Then wire the two subs in series.(Neg from amp to neg of sub one, pos of sub one to neg of sub two. then pos of sub two to pos of amp.
If it sounds too hard, leave it as you are already running the amp at two ohms.
Different manufacturers use different wiring. Usually the striped is positive.
An easy test is to take a battery (from a cordless drill) or a 9V, and touch the neg + pos to the correct terminal of the battery.
If the speaker pops OUT, it is wired correctly, if the speaker pops IN, reverse the wires.
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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.
The large blade is the + or positive terminal but so long as the left and right speaker are wired the same way it doesn't matter as it is the phase that matters -it's an AC signal so there really isn't a positive or negative voltage. If the speakers are not wired the same then they are out of phase which results in cancelling out frequencies like losing the bass and sounding 'tinny'. ~Steve Medley