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Ohm's???

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Old 04-01-2010, 03:02 PM
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Default Ohm's???

I'm looking into buying some Kicker Comp series and which is most gernerally better 2 ohm 4 ohm or 8 ohm. I have a pionner premier series deck 50x4 a old school orion 275 sx 150 watt bridged at 300 watts and a alamani capcitor. Not really sure if that will help all yal but I heard more ohms=more bass but all the competion guys are running 1 ohm.
 
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Old 04-01-2010, 07:25 PM
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Here check this out u most likely want 4 ohm DVC.
 
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Old 04-01-2010, 08:49 PM
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ohms are the resistin's ?? not sure about spelling. you can wire them in series or paralle an get different ratings.. what you have to do is make sure your amp can handle the rating.. like dont run your speakers at 1 ohm if your amp can only handle 4 usually high end amps an speakers are running 1 ohm..
 
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Old 04-01-2010, 11:06 PM
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alright I i don't know what ohm my amp is I got it from my dad its a old school orion 275 sx 150 watt and bridged to 300 watt
 
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Old 04-01-2010, 11:08 PM
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ohm's = resistance, it aint hard to figure out how to calculate that, it just depends on what kind of power your looking for.

what do you have right now?
 
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Old 04-02-2010, 10:34 PM
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Old 04-08-2010, 07:48 PM
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just my 2 cents: (in addition to the other posts) different ohm speakers run at different temps also... This is what i'm told anyways...
 
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Old 04-08-2010, 08:51 PM
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alright thank you guys the rockford post helped the most with cause the pics
 
  #9  
Old 04-09-2010, 03:44 AM
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To understand ohms you need Ohm's law:

R= U /I

you also need the Power law:

P= U x I

To gain watts- which is what you want,you need voltage as current.

Some amps are built to deliver huge voltages other are better in current.

Your old school orion is a competition amp. Built to cheat! That means it can deliver lot's of amps due to it's heavy power supply.
It can feed low resistance at the speaker output. Normal amps aren't able to do that without getting to hot and destroyed.

Now it gets interesting!
The less resistance the speaker has, the more amps are needed to drive that speaker.
remember: If resistance goes up, current goes down and if resistance goes down, current goes up!
Only a really good amp can handle that low resistance. That's why most automotive speakers have the 4 ohm resistance.
To make it more difficult restistance changes with frequency. So the 4ohms are just an average.
There are subs available going close down to zero- what is close to known as a short.
Which destroys cheap amps!.

Those orion amps where known for their ability to deliver lots of amps and to drive speakers in the low resistance area around 1 Ohm.
That means if you put four 4Ohm speaker parallel, the orion can drive the resulting 1Ohm load without problems.

To calculate the resulting load you need two calculations:

1) speakers in line:

resistance adds up: Rres= R1+ R2+R3+...

2) speakers parallel:

resistance gets always smaller as the smallest resistance

1/Rres = 1/R1+ 1/R2+ 1/R3+ 1/R...


You see a bit of math is included. You can also combine both laws.

A simple example: You have two 4 ohm speakers.
In line they add up to 8ohms
parallel, they get smaller to 2 ohms.

So which circuit would you choose for your orion?
Right, the second one due to it's high current ability to drive low resistance.

I hope, thats not to confusing.

One last thing: your Orion can deliver 2x 75 watts at 4 Ohm. That doesn't sound much at all.
BUT:
At lower resistance it can deliver twice the power! That's how they are built to cheat. You can compete in lower wattage classes. They will deliver more power with lower resistance!

If you are not completely satiesfied with your Orion, I will pay the shipping and make sure they are properly disposed and recyceled
 

Last edited by Deezel Stink3r; 04-09-2010 at 03:55 AM.
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Old 04-09-2010, 05:49 AM
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Originally Posted by Deezel Stink3r View Post
To understand ohms you need Ohm's law:

R= U /I

you also need the Power law:

P= U x I

who uses U cmon now

E (electromotive force also knows as V)
I (stand for current or amperage)
R (Resistance)
P (power or watts)

E = IR or R = E/I or I = E/R

and for Power there is

P = IE or P = (E^2)/R or P = (I^2)R
 

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