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4 12's in a crew cab

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Old Mar 18, 2007 | 08:25 PM
  #21  
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Originally Posted by cpelton
The speakers are wired in parallel therefore you take the reciprocals of the resistance of each sub and add them, the reciprocal of the sum gives you the total resistance.
ex. 1/8 + 1/8 + 1/8 + 1/8 = 0.5 = 1/2
= 2 ohms

if there were 2, 4ohm and 2 8ohm it would look like this
1/4 +1/4+1/8+1/8 = 1/.76 = 1.32ohms
Holy Is that Algebra or something?
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Old Apr 3, 2007 | 08:30 PM
  #22  
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Originally Posted by 1SlowHoe
Holy Is that Algebra or something?
Lol no its electrical physics... just finished that in highschool. But the mans right... thats how you do the math if there in paralel. If they were all in series, you just add all the resistance up. Ergo, never wire them all in series, cause your amp will probably take a serious
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Old Apr 9, 2007 | 06:10 PM
  #23  
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I'm in college for electrical so trust me on this.

In series, voltage drops proportionally across each load, impedance adds, amperage is constant, and power adds.

In parrallel voltage is constant, impedance is added as (1/(1/a, 1/b, etc.)). amperage adds, and power adds.

Also, capacitors and inductors (most every electrical component can be seperated into either a cap, an inductor, or a resistor.) will add all sorts of complication to it with A/C current, DC current is still easy.

Ohh, and you could wire everything in series, it would just result in very inefficient power and it wouldn't move the subs very well. Too much impedance will result in lots of current loss, therefore loss of power, whereas too little impedance will result in too much current produced, therefore putting out lots of power, but also lots of heat which in turn fries the amplifier.
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Old Apr 14, 2007 | 01:28 AM
  #24  
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I had 2 W7 13's on 2 JL 1000/1 in my old tahoe and it popped the back windows out. LOL. I laughed and then realized that both windows were broke. Then I got pissed!!!
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Old Apr 17, 2007 | 04:07 PM
  #25  
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I have a sub zero Box for 2 12's that fits perfectly under the back seat of an extended cab 99 silverado, you can barely even see it.

It did a legal 136.5 DB on a term lab DB meter w/ two RE SE series subs running at .8 ohms. I am upgrading to 2 15"s and would be willing to sell this stuff if anyone is interested.
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Old May 2, 2007 | 06:47 PM
  #26  
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well now i am taking these out and getting two 10' l7 solo barics down fired under the seat so if someone wants alot of bang lmk
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